Frequently asked questions

Below you'll find a list of questions about erectile dysfunction (ED), benign prostatic hyperplasia (BPH), and CIALIS. To make it easier for you, there are 3 tabs to choose from. Select the tab that best describes your condition to find information about that topic, or select "I want to see all questions."

Frequently asked questions about ED

What is erectile dysfunction (ED)?

ED is a medical condition that causes problems with getting or maintaining an erection. Approximately 18 million men in the United States alone have ED. And while it is more common in older men, ED can happen to men at almost any age—even to those who have never had issues with sexual activity before. Fortunately, ED can be treated. So talk with your healthcare provider right away if you are experiencing any kind of ED.

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What causes ED?

ED is a medical condition that happens when the normal process of getting an erection is interrupted. This can be caused by a lot of different things, such as diabetes, high cholesterol, stress, too much alcohol consumption, smoking, and other causes. Also, the signals that your brain sends to bring on an erection can be interrupted by nerve damage from a spinal cord injury, nervous system disease, or even some treatments for prostate cancer.

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Does age play a role in the progression of ED?

It's true that as men get older, sexual function is likely to decrease and ED becomes more common. But simply getting older by itself does not lead to ED, nor is ED just a natural part of aging that men have to accept.

ED affects men of all ages. It's a real medical condition that affects approximately 18 million men in the United States, both young and old. If ED is a problem for you, it can be addressed, no matter your age.

More often than not, ED is caused by other health problems, such as heart disease or diabetes, which are also more common as a man gets older. So, in addition to being a problem that can affect your sexual relationship, ED may also be a sign of other health conditions that your healthcare provider should know about.

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What is the most important information I should know about CIALIS?

CIALIS can cause your blood pressure to drop suddenly to an unsafe level if it is taken with certain other medicines. You could get dizzy, faint, or have a heart attack or stroke.

Do not take CIALIS if you take any medicines called "nitrates." Nitrates are commonly used to treat angina. Angina is a symptom of heart disease and can cause pain in your chest, jaw, or down your arm.

  • Medicines called nitrates include nitroglycerin that is found in tablets, sprays, ointments, pastes, or patches. Nitrates can also be found in other medicines such as isosorbide dinitrate or isosorbide mononitrate. Some recreational drugs called "poppers" also contain nitrates, such as amyl nitrite and butyl nitrite
  • Ask your healthcare provider or pharmacist if you are not sure if any of your medicines are nitrates

Tell all of your healthcare providers that you take CIALIS. If you need emergency medical care for a heart problem, it is important for your healthcare provider to know when you last took CIALIS.

After taking a single tablet, some of the active ingredient of CIALIS remains in your body for more than 2 days. The active ingredient can remain longer if you have problems with your kidneys or liver, or you are taking certain other medications.

Stop sexual activity and get medical help right away if you get symptoms such as chest pain, dizziness, or nausea during sex. Sexual activity can put an extra strain on your heart, especially if your heart is already weak from a heart attack or heart disease.

CLOSE

Who should not take CIALIS?

Do not take CIALIS if you:

  • Take any medicines called "nitrates"
  • Use recreational drugs called "poppers" like amyl nitrite and butyl nitrite
  • Are allergic to CIALIS or ADCIRCA® (tadalafil), or any of its ingredients. Symptoms of an allergic reaction may include:
    • Rash
    • Hives
    • Swelling of the lips, tongue, or throat
    • Difficulty breathing or swallowing

Call your healthcare provider or get help right away if you have any of the symptoms of an allergic reaction listed above.

CLOSE

What should I tell my doctor or healthcare provider before taking CIALIS?

CIALIS is not right for everyone. Only you and your healthcare provider can decide if CIALIS is right for you. Before taking CIALIS, tell your healthcare provider about all your medical problems, including if you:

  • Have heart problems such as angina, heart failure, irregular heartbeats, or have had a heart attack. Ask your healthcare provider if it is safe for you to have sexual activity. You should not take CIALIS if your healthcare provider has told you not to have sexual activity because of your health problems
  • Have low blood pressure or have high blood pressure that is not controlled
  • Have had a stroke
  • Have liver problems
  • Have kidney problems or require dialysis
  • Have retinitis pigmentosa, a rare genetic (runs in families) eye disease
  • Have ever had severe vision loss, including a condition called NAION
  • Have stomach ulcers
  • Have a bleeding problem
  • Have a deformed penis shape or Peyronie's disease
  • Have had an erection that lasted more than 4 hours
  • Have blood cell problems such as sickle cell anemia, multiple myeloma, or leukemia

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Can other medicines affect CIALIS?

Tell your healthcare provider about all the medicines you take including prescription and non-prescription medicines, vitamins, and herbal supplements. CIALIS and other medicines may affect each other. Always check with your healthcare provider before starting or stopping any medicines. Especially tell your healthcare provider if you take any of the following*:

  • Medicines called nitrates
  • Medicines called alpha-blockers. These include Hytrin® (terazosin HCl), Flomax® (tamsulosin HCl), Cardura® (doxazosin mesylate), Minipress® (prazosin HCl), Uroxatral® (alfuzosin HCl), Jalyn® (dutasteride and tamsulosin HCl), and Rapaflo® (silodosin). Alpha-blockers are sometimes prescribed for prostate problems or high blood pressure. If CIALIS is taken with certain alpha-blockers, your blood pressure could suddenly drop. You could get dizzy or faint
  • Other medicines to treat high blood pressure (hypertension)
  • Medicines called human immunodeficiency virus (HIV) protease inhibitors, such as ritonavir (Norvir®) or lopinavir/ritonavir (Kaletra®)
  • Some types of oral antifungals such as ketoconazole (Nizoral®) or itraconazole (Sporanox®)
  • Some types of antibiotics such as clarithromycin (Biaxin®), telithromycin (Ketek®), erythromycin (several brand names exist; please consult your healthcare provider to determine if you are taking this medicine)
  • Other medicines or treatments for ED
  • CIALIS is also marketed as ADCIRCA for the treatment of pulmonary arterial hypertension. Do not take both CIALIS and ADCIRCA. Do not take sildenafil citrate (Revatio®) with CIALIS

*The brands listed are trademarks of their respective owners and are not trademarks of Eli Lilly and Company. The makers of these brands are not affiliated with and do not endorse Eli Lilly and Company or its products.

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What are the possible side effects of CIALIS?

The most common side effects of CIALIS are: headache, indigestion, back pain, muscle aches, flushing, and stuffy or runny nose. These side effects usually go away after a few hours. Men who get back pain and muscle aches usually get them 12 to 24 hours after taking CIALIS. Back pain and muscle aches usually go away within 2 days. Call your healthcare provider if you get any side effect that bothers you or one that does not go away.

Uncommon side effects include:

  • An erection that won't go away (priapism). If you get an erection that lasts more than 4 hours, get medical help right away. Priapism must be treated as soon as possible or lasting damage can happen to your penis, including the inability to have erections
  • Color vision changes, such as seeing a blue tinge (shade) to objects or having difficulty telling the difference between the colors blue and green
  • In rare instances, men taking phosphodiesterase 5, or PDE5, inhibitors (oral ED medicines, including CIALIS) reported a sudden decrease or loss of vision in one or both eyes. It is not possible to determine whether these events are related directly to these medicines, to other factors such as high blood pressure or diabetes, or to a combination of these. If you experience sudden decrease or loss of vision, stop taking PDE5 inhibitors, including CIALIS, and call a healthcare provider right away
  • Sudden loss or decrease in hearing, sometimes with ringing in the ears and dizziness, has been rarely reported in people taking PDE5 inhibitors, including CIALIS. It is not possible to determine whether these events are related directly to the PDE5 inhibitors, to other diseases or medications, to other factors, or to a combination of factors. If you experience these symptoms, stop taking CIALIS and contact a healthcare provider right away

These are not all the possible side effects of CIALIS. For more information, ask your healthcare provider or pharmacist.

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How do I talk about ED with my partner?

Talking with your partner about ED may not be easy, but it can be helpful — for both of you. If you and your partner avoid the conversation, neither of you can know what the other is thinking and feeling. For many men, ED is a condition that is treatable.

You should be open and honest, as well as sensitive, about your partner's needs and questions. Remember to stick to the facts and try to think and talk about ED as the medical problem that it is. That way, you'll both gain a better understanding of what you're going through, and what to expect, as a couple.

You may want to reassure your partner that your ED is not her fault and that your condition may be caused by a medical issue.

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How does CIALIS treat ED?

CIALIS is a prescription medicine that you take by mouth for the treatment of ED. When you get an erection, blood flows into your penis and is temporarily trapped there, creating pressure in the surrounding chambers that cause your penis to expand. When you have ED, this process is interrupted. CIALIS for daily use (2.5 mg, 5 mg) and 36-hour CIALIS* for use as needed (5 mg, 10 mg, 20 mg) may increase blood flow to your penis when you are sexually stimulated. CIALIS may improve the ability to get erections and maintain them until sexual intercourse is successfully completed. It may also improve the overall satisfaction with the hardness of erections. After sexual intercourse is completed, the erection should go away. But in the rare event of an erection lasting more than 4 hours, seek immediate medical help to avoid permanent damage. Please see full Patient Information and talk to your healthcare provider to learn more.

*Individual results may vary. Not studied for multiple attempts per dose.

In clinical trials, 36-hour CIALIS taken as needed was shown to improve, up to 36 hours after dosing, the ability of men with ED to have a single successful intercourse attempt.

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For the treatment of ED, how do the CIALIS dosing options differ?

CIALIS offers 2 dosing options to treat ED. There's CIALIS for daily use (2.5 mg, 5 mg), a low-dose tablet you take once a day so you can attempt sex anytime between doses.* It may take up to 4 to 5 days before CIALIS for daily use may start to work for ED, or you may get results earlier. Your healthcare provider may start you on one dose and then adjust it, depending on how your body responds to the medicine. Do not take CIALIS more than one time each day. The recommended starting dose of CIALIS for daily use for the treatment of ED is 2.5 mg.

Then there's 36-hour CIALIS for use as needed (5 mg, 10 mg, 20 mg), a tablet that you take as needed. One 20 mg tablet can help some men be ready for sexual activity in as little as 30 minutes, and it may work for up to 36 hours.* Do not take CIALIS more than one time each day. The recommended starting dose for 36-hour CIALIS for use as needed in most patients is 10 mg.

If your healthcare provider decides that CIALIS is right for you, talk to him or her and your partner to help decide which option best fits your needs. If you are not satisfied, talk to your healthcare provider, who may recommend an adjustment to your CIALIS dosage. Learn more about the 2 CIALIS options.

*Individual results may vary. Not studied for multiple attempts per dose.

In clinical trials, 36-hour CIALIS for use as needed started to work in 30 minutes for some men who took 20 mg of 36-hour CIALIS. When taken as needed, 36-hour CIALIS was shown to improve, up to 36 hours after dosing, the ability of men with ED to have a single successful intercourse attempt.

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When treating my ED, what can I expect with CIALIS?

If you're taking CIALIS for daily use (2.5 mg, 5 mg) for ED, it may take up to 4 to 5 days before it may start to work and you are able to have successful intercourse, or you may get results earlier. If you are not satisfied, talk to your healthcare provider, who may recommend an adjustment to your CIALIS dosage. CIALIS for daily use is a low-dose tablet. Do not take CIALIS more than one time each day.

With 36-hour CIALIS for use as needed (5 mg, 10 mg, 20 mg), one 20 mg tablet can help some men be ready for sexual activity in as little as 30 minutes, and it may work for up to 36 hours.* It may take a few times to get the results you may want. Talk to your healthcare provider if you are not satisfied. Do not take CIALIS more than one time each day.

When you start treatment, track and monitor your results and share the information with your healthcare provider. And keep in mind that after you take a single tablet, some of the active ingredient of CIALIS can remain in your body for more than 2 days. It can remain longer if you have problems with your kidneys or liver, or if you are taking certain other medications. Please see full Patient Information to learn more.

*Individual results may vary. Not studied for multiple attempts per dose.

In clinical trials, 36-hour CIALIS for use as needed started to work in 30 minutes for some men who took 20 mg of 36-hour CIALIS. When taken as needed, 36-hour CIALIS was shown to improve, up to 36 hours after dosing, the ability of men with ED to have a single successful intercourse attempt.

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Can I take both CIALIS for daily use and 36-hour CIALIS for use as needed at the same time to treat my ED?

Do not take CIALIS for daily use (2.5 mg, 5 mg) and 36-hour CIALIS for use as needed (5 mg, 10 mg, 20 mg) at the same time. If you are taking one of the CIALIS dosing options and would like to start taking the other one, discontinue use and talk to your healthcare provider. You should not take any other ED treatment while taking CIALIS. Do not take CIALIS more than one time each day.

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Can I split CIALIS tablets in half?

Do not split CIALIS tablets. CIALIS tablets are not scored down the middle, so you may not be able to break one exactly in half. If a CIALIS tablet is not split exactly in half, you may not receive an adequate dose or you may receive a larger dose than you need. If you do not get the proper dose, you may not get the results you are hoping for. If your healthcare provider thinks CIALIS is right for you, he or she will prescribe the recommended dose. Your healthcare provider may adjust your dose depending on how your body responds to the medicine. Do not take CIALIS more than one time each day.

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What should I do if I miss a dose of CIALIS for daily use (2.5 mg, 5 mg)?

If you miss a dose, take it when you remember. However, do not take CIALIS more than one time each day.

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How much does CIALIS cost after the free trial?

After your free trial, the cost of a 1-month supply (30 tablets) of CIALIS for daily use (5 mg) should be about the same as 5 tablets of 36-hour CIALIS* for use as needed (20 mg).

Patients should check local pharmacies for actual retail prices, which may vary by pharmacy. Both national and regional managed care coverage has expanded for CIALIS for daily use, so be sure to contact your health plan's member services to find out if you're covered for a full month's prescription.

*Individual results may vary. Not studied for multiple attempts per dose.

In clinical trials, 36-hour CIALIS taken as needed was shown to improve, up to 36 hours after dosing, the ability of men with ED to have a single successful intercourse attempt.

This information is an estimate derived from the use of information under license from the following IMS Health Information service: IMS's Vector One®: Payer for the period July 2013. IMS expressly reserves all rights, including rights of copying, distribution and republication.

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Frequently asked questions about both ED and the signs and symptoms of BPH

What is benign prostatic hyperplasia (BPH)?

BPH, also known as an enlarged prostate, is a condition in which the prostate becomes enlarged and may cause problems associated with urination. Get more detailed information about BPH.

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Does age play a role in BPH?

Symptoms of BPH, such as needing to go frequently and urgently, can increase with age and often occur along with erectile dysfunction (ED).

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What is the most important information I should know about CIALIS?

CIALIS can cause your blood pressure to drop suddenly to an unsafe level if it is taken with certain other medicines. You could get dizzy, faint, or have a heart attack or stroke.

Do not take CIALIS if you take any medicines called "nitrates." Nitrates are commonly used to treat angina. Angina is a symptom of heart disease and can cause pain in your chest, jaw, or down your arm.

  • Medicines called nitrates include nitroglycerin that is found in tablets, sprays, ointments, pastes, or patches. Nitrates can also be found in other medicines such as isosorbide dinitrate or isosorbide mononitrate. Some recreational drugs called "poppers" also contain nitrates, such as amyl nitrite and butyl nitrite
  • Ask your healthcare provider or pharmacist if you are not sure if any of your medicines are nitrates

Tell all of your healthcare providers that you take CIALIS. If you need emergency medical care for a heart problem, it is important for your healthcare provider to know when you last took CIALIS.

After taking a single tablet, some of the active ingredient of CIALIS remains in your body for more than 2 days. The active ingredient can remain longer if you have problems with your kidneys or liver, or you are taking certain other medications.

Stop sexual activity and get medical help right away if you get symptoms such as chest pain, dizziness, or nausea during sex. Sexual activity can put an extra strain on your heart, especially if your heart is already weak from a heart attack or heart disease.

CLOSE

Who should not take CIALIS?

Do not take CIALIS if you:

  • Take any medicines called "nitrates"
  • Use recreational drugs called "poppers" like amyl nitrite and butyl nitrite
  • Are allergic to CIALIS or ADCIRCA® (tadalafil), or any of its ingredients. Symptoms of an allergic reaction may include:
    • Rash
    • Hives
    • Swelling of the lips, tongue, or throat
    • Difficulty breathing or swallowing

Call your healthcare provider or get help right away if you have any of the symptoms of an allergic reaction listed above.

CLOSE

What should I tell my doctor or healthcare provider before taking CIALIS?

CIALIS is not right for everyone. Only you and your healthcare provider can decide if CIALIS is right for you. Before taking CIALIS, tell your healthcare provider about all your medical problems, including if you:

  • Have heart problems such as angina, heart failure, irregular heartbeats, or have had a heart attack. Ask your healthcare provider if it is safe for you to have sexual activity. You should not take CIALIS if your healthcare provider has told you not to have sexual activity because of your health problems
  • Have low blood pressure or have high blood pressure that is not controlled
  • Have had a stroke
  • Have liver problems
  • Have kidney problems or require dialysis
  • Have retinitis pigmentosa, a rare genetic (runs in families) eye disease
  • Have ever had severe vision loss, including a condition called NAION
  • Have stomach ulcers
  • Have a bleeding problem
  • Have a deformed penis shape or Peyronie's disease
  • Have had an erection that lasted more than 4 hours
  • Have blood cell problems such as sickle cell anemia, multiple myeloma, or leukemia

CLOSE

Can other medicines affect CIALIS?

Tell your healthcare provider about all the medicines you take including prescription and non-prescription medicines, vitamins, and herbal supplements. CIALIS and other medicines may affect each other. Always check with your healthcare provider before starting or stopping any medicines. Especially tell your healthcare provider if you take any of the following*:

  • Medicines called nitrates
  • Medicines called alpha-blockers. These include Hytrin® (terazosin HCl), Flomax® (tamsulosin HCl), Cardura® (doxazosin mesylate), Minipress® (prazosin HCl), Uroxatral® (alfuzosin HCl), Jalyn® (dutasteride and tamsulosin HCl), and Rapaflo® (silodosin). Alpha-blockers are sometimes prescribed for prostate problems or high blood pressure. If CIALIS is taken with certain alpha-blockers, your blood pressure could suddenly drop. You could get dizzy or faint
  • Other medicines to treat high blood pressure (hypertension)
  • Medicines called human immunodeficiency virus (HIV) protease inhibitors, such as ritonavir (Norvir®) or lopinavir/ritonavir (Kaletra®)
  • Some types of oral antifungals such as ketoconazole (Nizoral®) or itraconazole (Sporanox®)
  • Some types of antibiotics such as clarithromycin (Biaxin®), telithromycin (Ketek®), erythromycin (several brand names exist; please consult your healthcare provider to determine if you are taking this medicine)
  • Other medicines or treatments for ED
  • CIALIS is also marketed as ADCIRCA for the treatment of pulmonary arterial hypertension. Do not take both CIALIS and ADCIRCA. Do not take sildenafil citrate (Revatio®) with CIALIS

*The brands listed are trademarks of their respective owners and are not trademarks of Eli Lilly and Company. The makers of these brands are not affiliated with and do not endorse Eli Lilly and Company or its products.

CLOSE

What are the possible side effects of CIALIS?

The most common side effects of CIALIS are: headache, indigestion, back pain, muscle aches, flushing, and stuffy or runny nose. These side effects usually go away after a few hours. Men who get back pain and muscle aches usually get them 12 to 24 hours after taking CIALIS. Back pain and muscle aches usually go away within 2 days. Call your healthcare provider if you get any side effect that bothers you or one that does not go away.

Uncommon side effects include:

  • An erection that won't go away (priapism). If you get an erection that lasts more than 4 hours, get medical help right away. Priapism must be treated as soon as possible or lasting damage can happen to your penis, including the inability to have erections
  • Color vision changes, such as seeing a blue tinge (shade) to objects or having difficulty telling the difference between the colors blue and green
  • In rare instances, men taking phosphodiesterase 5, or PDE5, inhibitors (oral ED medicines, including CIALIS) reported a sudden decrease or loss of vision in one or both eyes. It is not possible to determine whether these events are related directly to these medicines, to other factors such as high blood pressure or diabetes, or to a combination of these. If you experience sudden decrease or loss of vision, stop taking PDE5 inhibitors, including CIALIS, and call a healthcare provider right away
  • Sudden loss or decrease in hearing, sometimes with ringing in the ears and dizziness, has been rarely reported in people taking PDE5 inhibitors, including CIALIS. It is not possible to determine whether these events are related directly to the PDE5 inhibitors, to other diseases or medications, to other factors, or to a combination of factors. If you experience these symptoms, stop taking CIALIS and contact a healthcare provider right away

These are not all the possible side effects of CIALIS. For more information, ask your healthcare provider or pharmacist.

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How may CIALIS for daily use (5 mg) treat ED and the signs and symptoms of BPH?

CIALIS belongs to a group of medicines called phosphodiesterase 5 (PDE5) inhibitors. PDE5 is an enzyme found in many tissues in the body; it helps prevent blood vessels from relaxing and filling up with blood. Blood flow to the penis is necessary to get and keep an erection. CIALIS blocks PDE5 and causes smooth muscle and blood vessels in the penis to relax. This relaxation leads to increased blood flow. And increased blood flow to the penis is necessary for getting and maintaining an erection.

PDE5 enzymes are also found in the prostate and bladder. CIALIS inhibits PDE5 in these tissues as well, but the mechanism of how CIALIS reduces BPH symptoms is not completely understood.

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Which CIALIS dosing option is recommended for the treatment of both ED and the signs and symptoms of BPH?

CIALIS for daily use (5 mg) is the dosing option approved for the treatment of both ED and the signs and symptoms of BPH. For the treatment of ED, the recommended starting dose of CIALIS for daily use is 2.5 mg. Do not take CIALIS more than one time each day.

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Can 36-hour CIALIS for use as needed treat men with ED and the signs and symptoms of BPH?

Only CIALIS for daily use (5 mg) is approved to treat both ED and the signs and symptoms of BPH. Do not take CIALIS more than one time each day. For the treatment of ED, the recommended starting dose of CIALIS for daily use is 2.5 mg. 36-hour CIALIS for use as needed is not approved to treat the signs and symptoms of BPH.

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When treating my ED and symptoms of BPH, what can I expect with CIALIS?

It may take up to 4 to 5 days before CIALIS for daily use may start to work for your ED, or you may get results earlier. CIALIS for daily use (5 mg) can help improve the symptoms of BPH as early as 2 weeks after beginning treatment, although it may take as long as 4 weeks to see an improvement. For the treatment of ED, the recommended starting dose of CIALIS for daily use is 2.5 mg. Do not take CIALIS more than one time each day.

When you start treatment, track and monitor your results and share the information with your healthcare provider. And keep in mind that after you take a single tablet, some of the active ingredient of CIALIS can remain in your body for more than 2 days. It can remain longer if you have problems with your kidneys or liver, or if you are taking certain other medications. Please see full Patient Information to learn more.

CLOSE

What should I do if I miss a dose of CIALIS for daily use (5 mg)?

If you miss a dose, take it when you remember. However, do not take CIALIS more than one time each day.

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How much does CIALIS cost?

The cost of a 1-month supply (30 days) of CIALIS for daily use (5 mg) should be about the same as 5 tablets of 36-hour CIALIS* for use as needed (20 mg). The cost of a CIALIS prescription varies by insurance plan and by pharmacy. Call your health plan provider for more information about your coverage for CIALIS. For patients who do not have prescription coverage, retail pharmacy prices may vary.

CIALIS for daily use (5 mg) is the dosing option approved for the treatment of both ED and the signs and symptoms of BPH. For the treatment of ED, the recommended starting dose of CIALIS for daily use is 2.5 mg. 36-hour CIALIS for use as needed is not approved for the treatment of the signs and symptoms of BPH.

*Individual results may vary. Not studied for multiple attempts per dose.

In clinical trials, 36-hour CIALIS taken as needed was shown to improve, up to 36 hours after dosing, the ability of men with erectile dysfunction to have a single successful intercourse attempt.

This information is an estimate derived from the use of information under license from the following IMS Health Information service: IMS's Vector One®: Payer for the period July 2013. IMS expressly reserves all rights, including rights of copying, distribution and republication.

CLOSE

What is erectile dysfunction (ED)?

ED is a medical condition that causes problems with getting or maintaining an erection. Approximately 18 million men in the United States alone have ED. And while it is more common in older men, ED can happen at almost any age—even those who have never had issues with sexual activity before. Fortunately, ED can be treated. So talk with your healthcare provider right away if you are experiencing any kind of ED.

CLOSE

What causes ED?

ED is a medical condition that happens when the normal process of getting an erection is interrupted. This can be caused by a lot of different things, such as diabetes, high cholesterol, stress, too much alcohol consumption, smoking, and other causes. Also, the signals that your brain sends to bring on an erection can be interrupted by nerve damage from a spinal cord injury, nervous system disease, or even some treatments for prostate cancer.

CLOSE

Does age play a role in the progression of ED?

It's true that as men get older, sexual function is likely to decrease and ED becomes more common. But simply getting older by itself does not lead to ED, nor is ED just a natural part of aging that men have to accept.

ED affects men of all ages. It's a real medical condition that affects approximately 18 million men in the United States, both young and old. If ED is a problem for you, it can be addressed, no matter your age.

More often than not, ED is caused by other health problems, such as heart disease, or diabetes, which are also more common as a man gets older. So, in addition to being a problem that can affect your sexual relationship, ED may also be a sign of other health conditions that your healthcare provider should know about.

CLOSE

What is the most important information I should know about CIALIS?

CIALIS can cause your blood pressure to drop suddenly to an unsafe level if it is taken with certain other medicines. You could get dizzy, faint, or have a heart attack or stroke.

Do not take CIALIS if you take any medicines called "nitrates." Nitrates are commonly used to treat angina. Angina is a symptom of heart disease and can cause pain in your chest, jaw, or down your arm.

  • Medicines called nitrates include nitroglycerin that is found in tablets, sprays, ointments, pastes, or patches. Nitrates can also be found in other medicines such as isosorbide dinitrate or isosorbide mononitrate. Some recreational drugs called "poppers" also contain nitrates, such as amyl nitrite and butyl nitrite
  • Ask your healthcare provider or pharmacist if you are not sure if any of your medicines are nitrates

Tell all of your healthcare providers that you take CIALIS. If you need emergency medical care for a heart problem, it is important for your healthcare provider to know when you last took CIALIS.

After taking a single tablet, some of the active ingredient of CIALIS remains in your body for more than 2 days. The active ingredient can remain longer if you have problems with your kidneys or liver, or you are taking certain other medications.

Stop sexual activity and get medical help right away if you get symptoms such as chest pain, dizziness, or nausea during sex. Sexual activity can put an extra strain on your heart, especially if your heart is already weak from a heart attack or heart disease.

CLOSE

Who should not take CIALIS?

Do not take CIALIS if you:

  • Take any medicines called "nitrates"
  • Use recreational drugs called "poppers" like amyl nitrite and butyl nitrite
  • Are allergic to CIALIS or ADCIRCA® (tadalafil), or any of its ingredients. Symptoms of an allergic reaction may include:
    • Rash
    • Hives
    • Swelling of the lips, tongue, or throat
    • Difficulty breathing or swallowing

Call your healthcare provider or get help right away if you have any of the symptoms of an allergic reaction listed above.

CLOSE

What should I tell my doctor or healthcare provider before taking CIALIS?

CIALIS is not right for everyone. Only you and your healthcare provider can decide if CIALIS is right for you. Before taking CIALIS, tell your healthcare provider about all your medical problems, including if you:

  • Have heart problems such as angina, heart failure, irregular heartbeats, or have had a heart attack. Ask your healthcare provider if it is safe for you to have sexual activity. You should not take CIALIS if your healthcare provider has told you not to have sexual activity because of your health problems
  • Have low blood pressure or have high blood pressure that is not controlled
  • Have had a stroke
  • Have liver problems
  • Have kidney problems or require dialysis
  • Have retinitis pigmentosa, a rare genetic (runs in families) eye disease
  • Have ever had severe vision loss, including a condition called NAION
  • Have stomach ulcers
  • Have a bleeding problem
  • Have a deformed penis shape or Peyronie's disease
  • Have had an erection that lasted more than 4 hours
  • Have blood cell problems such as sickle cell anemia, multiple myeloma, or leukemia

CLOSE

Can other medicines affect CIALIS?

Tell your healthcare provider about all the medicines you take including prescription and non-prescription medicines, vitamins, and herbal supplements. CIALIS and other medicines may affect each other. Always check with your healthcare provider before starting or stopping any medicines. Especially tell your healthcare provider if you take any of the following*:

  • Medicines called nitrates
  • Medicines called alpha-blockers. These include Hytrin® (terazosin HCl), Flomax® (tamsulosin HCl), Cardura® (doxazosin mesylate), Minipress® (prazosin HCl), Uroxatral® (alfuzosin HCl), Jalyn® (dutasteride and tamsulosin HCl), and Rapaflo® (silodosin). Alpha-blockers are sometimes prescribed for prostate problems or high blood pressure. If CIALIS is taken with certain alpha-blockers, your blood pressure could suddenly drop. You could get dizzy or faint
  • Other medicines to treat high blood pressure (hypertension)
  • Medicines called human immunodeficiency virus (HIV) protease inhibitors, such as ritonavir (Norvir®) or lopinavir/ritonavir (Kaletra®)
  • Some types of oral antifungals such as ketoconazole (Nizoral®) or itraconazole (Sporanox®)
  • Some types of antibiotics such as clarithromycin (Biaxin®), telithromycin (Ketek®), erythromycin (several brand names exist; please consult your healthcare provider to determine if you are taking this medicine)
  • Other medicines or treatments for ED
  • CIALIS is also marketed as ADCIRCA for the treatment of pulmonary arterial hypertension. Do not take both CIALIS and ADCIRCA. Do not take sildenafil citrate (Revatio®) with CIALIS

*The brands listed are trademarks of their respective owners and are not trademarks of Eli Lilly and Company. The makers of these brands are not affiliated with and do not endorse Eli Lilly and Company or its products.

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What are the possible side effects of CIALIS?

The most common side effects of CIALIS are: headache, indigestion, back pain, muscle aches, flushing, and stuffy or runny nose. These side effects usually go away after a few hours. Men who get back pain and muscle aches usually get them 12 to 24 hours after taking CIALIS. Back pain and muscle aches usually go away within 2 days. Call your healthcare provider if you get any side effect that bothers you or one that does not go away.

Uncommon side effects include:

  • An erection that won't go away (priapism). If you get an erection that lasts more than 4 hours, get medical help right away. Priapism must be treated as soon as possible or lasting damage can happen to your penis, including the inability to have erections
  • Color vision changes, such as seeing a blue tinge (shade) to objects or having difficulty telling the difference between the colors blue and green
  • In rare instances, men taking phosphodiesterase 5, or PDE5, inhibitors (oral ED medicines, including CIALIS) reported a sudden decrease or loss of vision in one or both eyes. It is not possible to determine whether these events are related directly to these medicines, to other factors such as high blood pressure or diabetes, or to a combination of these. If you experience sudden decrease or loss of vision, stop taking PDE5 inhibitors, including CIALIS, and call a healthcare provider right away
  • Sudden loss or decrease in hearing, sometimes with ringing in the ears and dizziness, has been rarely reported in people taking PDE5 inhibitors, including CIALIS. It is not possible to determine whether these events are related directly to the PDE5 inhibitors, to other diseases or medications, to other factors, or to a combination of factors. If you experience these symptoms, stop taking CIALIS and contact a healthcare provider right away

These are not all the possible side effects of CIALIS. For more information, ask your healthcare provider or pharmacist.

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How do I talk about ED with my partner?

Talking with your partner about ED may not be easy, but it can be helpful — for both of you. If you and your partner avoid the conversation, neither of you can know what the other is thinking and feeling. For many men, ED is a condition that is treatable.

You should be open and honest, as well as sensitive, about your partner's needs and questions. Remember to stick to the facts and try to think and talk about ED as the medical problem that it is. That way, you'll both gain a better understanding of what you're going through, and what to expect, as a couple.

You may want to reassure your partner that your ED is not her fault and that your condition could be caused by a medical issue.

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How does CIALIS treat ED?

CIALIS is a prescription medicine that you take by mouth for the treatment of ED. When you get an erection, blood flows into your penis and is temporarily trapped there, creating pressure in the surrounding chambers that cause your penis to expand. When you have ED, this process is interrupted. CIALIS for daily use (2.5 mg, 5 mg) and 36-hour CIALIS* for use as needed (5 mg, 10 mg, 20 mg) may increase blood flow to your penis when you are sexually stimulated. CIALIS may improve the ability to get erections and maintain them until sexual intercourse is successfully completed. It may also improve the overall satisfaction with the hardness of erections. After sexual intercourse is completed, the erection should go away. But in the rare event of an erection lasting more than 4 hours, seek immediate medical help to avoid permanent damage. Please see full Patient Information and talk to your healthcare provider to learn more.

*Individual results may vary. Not studied for multiple attempts per dose.

In clinical trials, 36-hour CIALIS taken as needed was shown to improve, up to 36 hours after dosing, the ability of men with ED to have a single successful intercourse attempt.

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For the treatment of ED, how do the CIALIS options differ?

CIALIS offers 2 different dosing options to treat ED. There's CIALIS for daily use (2.5 mg, 5 mg), a low-dose tablet you take once a day so you can attempt sex anytime between doses.* It may take up to 4 to 5 days before CIALIS for daily use may start to work for ED, or you may get results earlier. Your healthcare provider may start you on one dose and then adjust it, depending on how your body responds to the medicine. Do not take CIALIS more than one time each day. The recommended starting dose of CIALIS for daily use for the treatment of ED is 2.5 mg.

Then there's 36-hour CIALIS for use as needed (5 mg, 10 mg, 20 mg), a tablet that you take as needed. One 20 mg tablet can help some men be ready for sexual activity in as little as 30 minutes, and it may work for up to 36 hours.* Do not take CIALIS more than one time each day. The recommended starting dose for 36-hour CIALIS for use as needed in most patients is 10 mg.

If your healthcare provider decides that CIALIS is right for you, talk to him or her and your partner to help decide which option best fits your needs. If you are not satisfied, talk to your healthcare provider, who may recommend an adjustment to your CIALIS dosage. Learn more about the 2 CIALIS options.

*Individual results may vary. Not studied for multiple attempts per dose.

In clinical trials, 36-hour CIALIS for use as needed started to work in 30 minutes for some men who took 20 mg of 36-hour CIALIS. When taken as needed, 36-hour CIALIS was shown to improve, up to 36 hours after dosing, the ability of men with ED to have a single successful intercourse attempt.

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When treating my ED, what can I expect with CIALIS?

If you're taking CIALIS for daily use (2.5 mg, 5 mg) for ED, it may take up to 4 to 5 days before it may start to work and you are able to have successful intercourse, or you may get results earlier. If you are not satisfied, talk to your healthcare provider, who may recommend an adjustment to your CIALIS dosage. CIALIS for daily use is a low-dose tablet. Do not take CIALIS more than one time each day.

With 36-hour CIALIS for use as needed (5 mg, 10 mg, 20 mg), one 20 mg tablet can help some men be ready for sexual activity in as little as 30 minutes, and it may work for up to 36 hours.* It may take a few times to get the results you may want. Talk to your healthcare provider if you are not satisfied. Do not take CIALIS more than one time each day.

When you start treatment, track and monitor your results and share the information with your healthcare provider. And keep in mind that after you take a single tablet, some of the active ingredient of CIALIS can remain in your body for more than 2 days. It can remain longer if you have problems with your kidneys or liver, or if you are taking certain other medications. Please see full Patient Information to learn more.

*Individual results may vary. Not studied for multiple attempts per dose.

In clinical trials, 36-hour CIALIS for use as needed started to work in 30 minutes for some men who took 20 mg of 36-hour CIALIS. When taken as needed, 36-hour CIALIS was shown to improve, up to 36 hours after dosing, the ability of men with ED to have a single successful intercourse attempt.

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Can I take both CIALIS for daily use and 36-hour CIALIS for use as needed at the same time?

Do not take CIALIS for daily use (2.5 mg, 5 mg) and 36-hour CIALIS for use as needed (5 mg, 10 mg, 20 mg) at the same time. If you are taking one of the CIALIS dosing options and would like to start taking the other one, discontinue use and talk to your healthcare provider. You should not take any other ED treatment while taking CIALIS. Do not take CIALIS more than one time each day.

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Can I split CIALIS tablets in half?

Do not split CIALIS tablets. CIALIS tablets are not scored down the middle, so you may not be able to break one exactly in half. If a CIALIS tablet is not split exactly in half, you may not receive an adequate dose or you may receive a larger dose than you need. If you do not get the proper dose, you may not get the results you are hoping for. If your healthcare provider thinks CIALIS is right for you, he or she will prescribe the recommended dose. Your healthcare provider may adjust your dose depending on how your body responds to the medicine. Do not take CIALIS for daily use more than one time each day.

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What should I do if I miss a dose of CIALIS for daily use (2.5 mg, 5 mg)?

If you miss a dose, take it when you remember. However, do not take CIALIS more than one time each day.

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How much does CIALIS cost after the free trial?

After your free trial, the cost of a 1-month supply (30 tablets) of CIALIS for daily use (5 mg) should be about the same as 5 tablets of 36-hour CIALIS* for use as needed (20 mg).

Patients should check local pharmacies for actual retail prices, which may vary by pharmacy. Both national and regional managed care coverage has expanded for CIALIS for daily use, so be sure to contact your health plan's member services to find out if you're covered for a full month's prescription.

*Individual results may vary. Not studied for multiple attempts per dose.

In clinical trials, 36-hour CIALIS taken as needed was shown to improve, up to 36 hours after dosing, the ability of men with ED to have a single successful intercourse attempt.

This information is an estimate derived from the use of information under license from the following IMS Health Information service: IMS's Vector One®: Payer for the period July 2013. IMS expressly reserves all rights, including rights of copying, distribution and republication.

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What is benign prostatic hyperplasia (BPH)?

BPH, also known as an enlarged prostate, is a condition in which the prostate becomes enlarged and may cause problems associated with urination. Get more detailed information about BPH.

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Does age play a role in BPH?

Symptoms of BPH, such as needing to urinate frequently and urgently, can increase with age and often occur along with ED.

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How may CIALIS for daily use (5 mg) treat ED and the signs and symptoms of BPH?

CIALIS belongs to a group of medicines called phosphodiesterase 5 (PDE5) inhibitors. PDE5 is an enzyme found in many tissues in the body; it helps prevent blood vessels from relaxing and filling up with blood. Blood flow to the penis is necessary to get and keep an erection. CIALIS blocks PDE5 and causes smooth muscle and blood vessels in the penis to relax. This relaxation leads to increased blood flow. And increased blood flow to the penis is necessary for getting and maintaining an erection.

PDE5 enzymes are also found in the prostate and bladder. CIALIS inhibits PDE5 in these tissues as well, but the mechanism of how CIALIS reduces BPH symptoms is not completely understood.

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Which CIALIS dosing option is for the treatment of both ED and the signs and symptoms of BPH?

CIALIS for daily use (5 mg) is the dosing option approved for the treatment of both ED and the signs and symptoms of BPH. For the treatment of ED only, the recommended starting dose of CIALIS for daily use is 2.5 mg. Do not take CIALIS more than one time each day.

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Can 36-hour CIALIS for use as needed treat men with ED and the signs and symptoms of BPH?

Only CIALIS for daily use (5 mg) is approved to treat both ED and the signs and symptoms of BPH. Do not take CIALIS more than one time each day. For the treatment of ED only, the recommended starting dose of CIALIS for daily use is 2.5 mg. 36-hour CIALIS for use as needed is not approved to treat the signs and symptoms of BPH.

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When treating my ED and symptoms of BPH, what can I expect with CIALIS?

It may take up to 4 to 5 days before CIALIS for daily use may start to work for your ED, or you may get results earlier. CIALIS for daily use (5 mg) can help improve the symptoms of BPH as early as 2 weeks after beginning treatment, although it may take as long as 4 weeks to seen an improvement. For the treatment of ED, the recommended starting dose of CIALIS for daily use is 2.5 mg. Do not take CIALIS more than one time each day.

When you start treatment, track and monitor your results and share the information with your healthcare provider. And keep in mind that after you take a single tablet, some of the active ingredient of CIALIS can remain in your body for more than 2 days. It can remain longer if you have problems with your kidneys or liver, or if you are taking certain other medications. Please see full Patient Information to learn more.

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