The fast-acting ED pill

Stendra®

The newest FDA approved ED medication on the market, Stendra® (avanafil) has something special: it can work in as little as 15 minutes.

Meet Stendra®

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The only drug proven to be effective for treating ED just 15 minutes after it’s taken

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Taken as-needed

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Free shipping, if prescribed

Take Stendra® exactly as your healthcare provider tells you. Typically, it is recommended that Stendra® be taken 15-30 minutes before sexual activity, depending on the dose. Stendra® should not be taken more than once daily.

  • Prescription products require an online consultation with a physician who will determine if a prescription is appropriate.
  • Stendra®, like all ED medications, has a risk of side effects. The most common side effects of Stendra® include headaches, facial flushing, nasal congestion, sore throat, and back pain. Make sure to read all the information that comes with your prescription, including the important safety information, and use our platform to connect with a provider if you are experiencing side effects that bother you or don’t go away.

* Only available if prescribed after an online consultation with a healthcare provider.

* This page has been medically reviewed by Peter J. Stahl, MD.

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Why Stendra®?

In the fast lane

Stendra® is the only ED medication clinically proven to be effective 15 minutes after it is taken.

A safe bet

Stendra® has the lowest reported side effects of all PDE5 inhibitors.

How Stendra® works

How Stendra® works

Inhibits PDE5

Stendra® is an oral ED medication that works by suppressing an enzyme in the body called PDE5.

Increases blood flow

When PDE5 is suppressed, blood is able to flow more freely through the body—including to the (you guessed it) penis.

Gets you hard

More blood flow to the penis means harder, more satisfying erections once you’re sexually stimulated.

Real results from guys like you

4.5 average rating

Dwane

Verified review

“I’d give it 5 thumbs up lol!!!!.”“I’d give it 5 thumbs up lol!!!!.” “I’d give it 5 thumbs up lol!!!!.”

Marty

Verified review

“As the title implies, I'm very happy. The consultations are thorough and informative. The product works as advertised. Shipping is prompt. All good things! Thank you!”

David

Verified review

“Was not sure but was very satisfied with results thank you Hims I feel 20 again.”

Marty

Verified review

“As the title implies, I'm very happy. The consultations are thorough and informative. The product works as advertised. Shipping is prompt. All good things! Thank you!”

These customers’ results have not been independently verified. Individual results will vary.

About Stendra®

What is Stendra®?

Stendra® is an effective ED medication with user-friendly benefits: it works fast, has a favorable side effects profile, and can be taken with or without food.

Good to know

How to take Stendra®

For most men, taking Stendra® 15-30 minutes before sexual activity works best, depending on the dose. Stendra® should not be taken more than once daily.

Common Stendra® side effects

The most common side effects of Stendra® include headaches, facial flushing, nasal congestion, sore throat, and back pain. Make sure to read all the information that comes with your prescription, including the important safety information, and use our platform to talk with a provider if you are experiencing side effects that bother you or don’t go away.

How to get Stendra® online through Hims

How to get Stendra® online through hims

Simple consultation

Answer a few questions about your symptoms and health history.

Connect with a provider

A licensed medical provider will determine if treatment is right for you.

Free delivery

Your ED medication will ship discreetly to you for free, if prescribed.

Frequently asked questions about Stendra®

Stendra® is the brand name of a medication called avanafil, which was approved by the FDA for treatment of erectile dysfunction in 2012. It is the newest erectile dysfunction medication on the market, and can be taken as early as 15 minutes before sexual activity. It also has a favorable side effects profile, with the most common side effects including headaches, flushing, runny or stuffy nose, sore throat, and back pain.
Stendra®, similar to other ED medications like Viagra® and Cialis®, inhibits the work of an enzyme called phosphodiesterase type 5 to improve blood flow to the penis during sexual stimulation. Stendra® has been shown to work in as little as 15 minutes. Some men may find that this helps them to have a more spontaneous sex life. Learn more about PDE5 inhibitors here.
Stendra® is only available by prescription in the United States. As such, Stendra® cannot legally be sold over-the-counter here. To get Stendra®, consult with a medical provider through our platform to see if Stendra® or another ED medication could be right for you. If prescribed, you’ll receive your medication shipment directly to your door in discreet packaging.
Stendra® can work for up to six hours, which means that Stendra® lasts about as long as Viagra® (sildenafil) and starts working faster than Viagra®. The half-life of Stendra® is 3-5 hours, so the effects of the medication may be noticeably reduced after several hours.
Stendra® is manufactured in three dosages: 50mg, 100mg and 200mg. Providers on our platform only prescribe the 100mg dose, which is the typical recommended starting dosage and dosage that many men find effective. If the 100mg dose is not effective for treating your erectile dysfunction, you may ask your provider about switching ED medications or pursue treatment with Stendra 200mg outside of our platform
Stendra® was shown in clinical studies to be generally safe for most men experiencing erectile dysfunction. However, for some men with underlying medical conditions, Stendra® may pose some risks.
If you have had a stroke or heart problems such as a heart attack, irregular heartbeat, angina, chest pain, heart disease, heart failure, or have had heart surgery within the last 6 months, tell your doctor. Additionally, you may be at higher risk for problems with Stendra® if you have pulmonary hypertension, low blood pressure, uncontrolled high blood pressure, a deformed penis shape or Peyronie’s Disease, a prolonged erection that lasted for more than 4 hours, sickle cell anemia, multiple myeloma, leukemia, retinitis pigmentosa, severe eye problems like vision loss (NAION), bleeding problems, stomach ulcers, liver problems, kidney problems or are having dialysis. Discuss any pre-existing medical conditions with your provider prior to starting Stendra®.
Common side effects of Stendra® include headaches, facial flushing, nasal congestion, sore throat, and back pain. Some less common side effects include lower and upper respiratory infections, hypertension, indigestion, nausea, constipation, skin rash, dizziness, joint pain and diarrhea. These side effects are generally not dangerous, but you should tell your doctor if they do not go away or are particularly bothersome.
There are some rare, serious side effects associated with Stendra®, including vision problems, loss of hearing and priapism (an erection lasting longer than four hours). If you experience any of these serious side effects, get medical attention and medical help immediately.
There are some over-the-counter and prescription drugs that are contraindicated for Stendra®, which means they should not be taken at the same time or a serious reaction could occur. In particular, medications that are used to treat high blood pressure may interact with Stendra® to cause a serious drop in blood pressure. Some of these medications include nitrates, such as nitroglycerin, and alpha-blockers such as terazosin, tamsulosin, doxazosin mesylate, prazosin, alfuzosin, dutasteride or silodosin.
Medicines used to treat pulmonary hypertension (guanylate cyclase stimulators), chest pain and HIV (protease inhibitors) may interact with Stendra®, as well as some antifungal and antibiotic medications. Some of these medications include amyl nitrite (poppers), riociguat (Adempas®), ritonavir (Norvir®), indinavir sulfate (Crixivan®), atazanavir sulfate (Reyataz®), saquinavir (Fortovase® or Invirase®), ketoconazole (Nizoral®), itraconazole (Sporanox®), clarithromycin (Biaxin®), telithromycin (Ketek®), or erythromycin. Tell your doctor about any medications that you take to ensure that you can take Stendra® without risking any negative drug interactions.
Stendra® and Viagra® are both effective, FDA approved erectile dysfunction treatments that are taken as-needed. The biggest difference between the two is how quickly the medication works: Viagra® takes 30-60 minutes to start working while Stendra® can start working in as little as 15 minutes. Viagra® has over two decades of use by real men with erectile dysfunction, while Stendra® is newer, so there is less real world evidence around the use of Stendra®. Stendra® was shown in clinical studies to have a lower rate of side effects. If you are unsure which medication is best for you, consult with a healthcare provider through our platform for medical advice about how to treat your ED.

Learn more about Stendra®

Important safety information

Learn more about Stendra®

Important safety information

Important Safety Information

Do not take Avanafil (Avanafil citrate) if you:
  • take any medicines called nitrates, often prescribed for chest pain, or guanylate cyclase stimulators like Adempas (riociguat) for pulmonary hypertension. Your blood pressure could drop to an unsafe level
  • are allergic to Avanafil or any of the ingredients in Avanafil
Discuss your health with your doctor to ensure that you are healthy enough for sex. If you experience chest pain, dizziness, or nausea during sex, seek immediate medical help
Avanafil can cause serious side effects. Rarely reported side effects include:
  • an erection that will not go away (priapism). If you have an erection that lasts more than 4 hours, get medical help right away. If it is not treated right away, priapism can permanently damage your penis
  • sudden vision loss in one or both eyes. Sudden vision loss in one or both eyes can be a sign of a serious eye problem called non-arteritic anterior ischemic optic neuropathy (NAION). Stop taking Avanafil and call your healthcare provider right away if you have any sudden vision loss
  • sudden hearing decrease or hearing loss. Some people may also have ringing in their ears (tinnitus) or dizziness. If you have these symptoms, stop taking Avanafil and contact a doctor right away
Before you take Avanafil, tell your healthcare provider if you:
  • have or have had heart problems such as a heart attack, irregular heartbeat, angina, chest pain, narrowing of the aortic valve, or heart failure
  • have had heart surgery within the last 6 months
  • have pulmonary hypertension
  • have had a stroke
  • have low blood pressure, or high blood pressure that is not controlled
  • have a deformed penis shape
  • have had an erection that lasted for more than 4 hours
  • have problems with your blood cells such as sickle cell anemia, multiple myeloma, or leukemia
  • have retinitis pigmentosa, a rare genetic (runs in families) eye disease
  • have ever had severe vision loss, including an eye problem called NAION
  • have bleeding problems
  • have or have had stomach ulcers
  • have liver problems
  • have kidney problems or are having kidney dialysis have any other medical conditions
Tell your healthcare provider about all the medicines you take, including prescription and over-the-counter medicines, vitamins, and herbal supplements.
Avanafil may affect the way other medicines work, and other medicines may affect the way Avanafil works, causing side effects. Especially tell your healthcare provider if you take any of the following:
  • medicines called nitrates
  • medicines called guanylate cyclase stimulators such as Adempas (riociguat)
  • medicines called alpha-blockers such as Hytrin (terazosin HCl), Flomax (tamsulosin HCl), Cardura (doxazosin mesylate), Minipress (prazosin HCl), Uroxatral (alfuzosin HCl), Jalyn (dutasteride and tamsulosin HCl), or Rapaflo (silodosin). Alpha-blockers are sometimes prescribed for prostate problems or high blood pressure. In some patients, the use of Avanafil with alpha-blockers can lead to a drop in blood pressure or fainting
  • medicines called HIV protease inhibitors, such as ritonavir (Norvir), indinavir sulfate (Crixivan), saquinavir (Fortovase or Invirase), or atazanavir sulfate (Reyataz)
  • some types of oral antifungal medicines, such as ketoconazole (Nizoral) and itraconazole (Sporanox)
  • some types of antibiotics, such as clarithromycin (Biaxin), telithromycin (Ketek), or erythromycin
  • other medicines that treat high blood pressure
  • other medicines or treatments for ED
Avanafil does not protect against sexually transmitted diseases, including HIV.
The most common side effects of Avanafil: headache; flushing; upset stomach; abnormal vision, such as changes in color vision (such as having a blue color tinge) and blurred vision; stuffy or runny nose; back pain; muscle pain; nausea; dizziness; rash.
Avanafil (Avanafil citrate) is a prescription medicine used to treat erectile dysfunction (ED).
Avanafil is not for women or children.

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Important Safety Information

Do not take Sildenafil (generic Viagra) if you:
  • take any medicines called nitrates, often prescribed for chest pain, or guanylate cyclase stimulators like Adempas (riociguat) for pulmonary hypertension. Your blood pressure could drop to an unsafe level
  • are allergic to Sildenafil, as contained in Sildenafil and REVATIO, or any of the ingredients in Sildenafil
Discuss your health with your doctor to ensure that you are healthy enough for sex. If you experience chest pain, dizziness, or nausea during sex, seek immediate medical help
Sildenafil can cause serious side effects. Rarely reported side effects include:
  • an erection that will not go away (priapism). If you have an erection that lasts more than 4 hours, get medical help right away. If it is not treated right away, priapism can permanently damage your penis
  • sudden vision loss in one or both eyes. Sudden vision loss in one or both eyes can be a sign of a serious eye problem called non-arteritic anterior ischemic optic neuropathy (NAION). Stop taking Sildenafil and call your healthcare provider right away if you have any sudden vision loss
  • sudden hearing decrease or hearing loss. Some people may also have ringing in their ears (tinnitus) or dizziness. If you have these symptoms, stop taking Sildenafil and contact a doctor right away
Before you take Sildenafil, tell your healthcare provider if you:
  • have or have had heart problems such as a heart attack, irregular heartbeat, angina, chest pain, narrowing of the aortic valve, or heart failure
  • have had heart surgery within the last 6 months
  • have pulmonary hypertension
  • have had a stroke
  • have low blood pressure, or high blood pressure that is not controlled
  • have a deformed penis shape
  • have had an erection that lasted for more than 4 hours
  • have problems with your blood cells such as sickle call anemia, multiple myeloma, or leukemia
  • have retinitis pigmentosa, a rare genetic (runs in families) eye disease
  • have ever had severe vision loss, including an eye problem called NAION
  • have bleeding problems
  • have or have had stomach ulcers
  • have liver problems
  • have kidney problems or are having kidney dialysis have any other medical conditions
Sildenafil can cause small declines in your blood pressure that may cause dizziness, lightheadedness or even fainting in people sensitive to blood pressure changes. Be sure that you are well-hydrated and in a safe, controlled environment the first time that you take sildenafil.
Tell your healthcare provider about all the medicines you take, including prescription and over-the-counter medicines, vitamins, and herbal supplements.
Sildenafil may affect the way other medicines work, and other medicines may affect the way Sildenafil works, causing side effects. Especially tell your healthcare provider if you take any of the following:
  • medicines called nitrates
  • medicines called guanylate cyclase stimulators such as Adempas (riociguat)
  • medicines called alpha-blockers such as Hytrin (terazosin HCl), Flomax (tamsulosin HCl), Cardura (doxazosinmesylate), Minipress (prazosin HCl), Uroxatral (alfuzosin HCl), Jalyn (dutasteride and tamsulosin HCl), or Rapaflo (silodosin). Alpha-blockers are sometimes prescribed for prostate problems or high blood pressure. In some patients, the use of Sildenafil with alpha-blockers can lead to a drop in blood pressure or to fainting
  • medicines called HIV protease inhibitors, such as ritonavir (Norvir), indinavir sulfate (Crixivan), saquinavir (Fortovase or Invirase), or atazanavir sulfate (Reyataz)
  • some types of oral antifungal medicines, such as ketoconazole (Nizoral) and itraconazole (Sporanox)
  • some types of antibiotics, such as clarithromycin (Biaxin), telithromycin (Ketek), or erythromycin
  • other medicines that treat high blood pressure
  • other medicines or treatments for ED
  • Sildenafil contains Sildenafil, which is the same medicine found in another drug called REVATIO. REVATIO is used to treat a rare disease called pulmonary arterial hypertension (PAH). Sildenafil should not be used with REVATIO or with other PAH treatments containing Sildenafil or any other PDE5 inhibitors (such as Adcirca [tadalafil])
Sildenafil does not protect against sexually transmitted diseases, including HIV.
The most common side effects of Sildenafil: headache; flushing; upset stomach; abnormal vision, such as changes in color vision (such as having a blue color tinge) and blurred vision; stuffy or runny nose; back pain; muscle pain; nausea; dizziness; rash.
Sildenafil (generic Viagra) is prescription medicine used to treat erectile dysfunction (ED).
Sildenafil is not for women or children.

Important Safety Information

Do not take Cialis® if you:
  • take any medicines called nitrates, often prescribed for chest pain, or guanylate cyclase stimulators like Adempas® (riociguat) for pulmonary hypertension, or any other similar ED medication. Your blood pressure could drop to an unsafe level
  • are allergic to Cialis® or any of the ingredients in Cialis®
Discuss your health with your doctor to ensure that you are healthy enough for sex. If you experience chest pain, dizziness, or nausea during sex, seek immediate medical attention.
Cialis® can cause serious side effects. Rarely reported side effects include:
  • an erection that will not go away (priapism). If you have an erection that lasts more than 4 hours, get medical help right away. If it is not treated right away, priapism can permanently damage your penis
  • sudden vision loss in one or both eyes. Sudden vision loss in one or both eyes can be a sign of a serious eye problem called non-arteritic anterior ischemic optic neuropathy (NAION). Stop taking Cialis® and call your healthcare provider right away if you have any sudden vision loss
  • sudden hearing decrease or hearing loss. Some people may also have ringing in their ears (tinnitus) or dizziness. If you have these symptoms, stop taking Cialis® and contact a doctor right away
Before you take Cialis®, tell your healthcare provider if you:
  • have or have had heart problems such as a heart attack, irregular heartbeat, angina, chest pain, narrowing of the aortic valve, or heart failure
  • have taken a nitrate medication in the last 48 hours
  • have had heart surgery within the last 6 months
  • have pulmonary hypertension
  • have had a stroke
  • have low blood pressure, or high blood pressure that is not controlled
  • have a deformed penis shape
  • have had an erection that lasted for more than 4 hours
  • have problems with your blood cells such as sickle cell anemia, multiple myeloma, or leukemia
  • have retinitis pigmentosa, a rare genetic (runs in families) eye disease
  • have ever had severe vision loss, including an eye problem called NAION
  • have bleeding problems
  • have or have had stomach ulcers
  • have liver problems
  • have kidney problems or having kidney dialysis,
  • have any other medical conditions
Cialis® can cause small declines in your blood pressure that may cause dizziness, lightheadedness or even fainting in people sensitive to blood pressure changes. Be sure that you are well-hydrated and in a safe, controlled environment the first time that you take Cialis®.
Tell your healthcare provider about all the medicines you take, including prescription and over-the-counter medicines, vitamins, and herbal supplements.
Cialis® may affect the way other medicines work, and other medicines may affect the way Cialis® works, causing side effects. Especially tell your healthcare provider if you take any of the following:
  • medicines called nitrates
  • medicines called guanylate cyclase stimulators such as Adempas (riociguat)
  • medicines called alpha-blockers such as Hytrin® (terazosin HCl), Flomax® (tamsulosin HCl), Cardura® (doxazosin mesylate), Minipress® (prazosin HCl), Uroxatral® (alfuzosin HCl), Jalyn® (dutasteride and tamsulosin HCl), or Rapaflo® (silodosin). Alpha-blockers are sometimes prescribed for prostate problems or high blood pressure. In some patients, the use of Cialis® with alpha-blockers can lead to a drop in blood pressure or to fainting
  • medicines called HIV protease inhibitors, such as ritonavir (Norvir®), indinavir sulfate (Crixivan®), saquinavir (Fortovase® or Invirase®), atazanavir sulfate (Reyataz®), or cobicistat (Tybost®)
  • some types of oral antifungal medicines, such as ketoconazole (Nizoral®) and itraconazole (Sporanox®)
  • some types of antibiotics, such as clarithromycin (Biaxin®, telithromycin (Ketek®), or erythromycin
  • other medicines that treat high blood pressure
  • other medicines or treatment options for ED
  • Cialis® should not be used with Revatio® or with other PAH treatments containing PDE5 inhibitors.
  • Cialis® does not protect against sexually transmitted diseases, including HIV.
The most common side effects of Cialis®; headache, flushing, upset stomach, abnormal vision, such as changes in color vision ( like having a blue color tinge) and blurred vision, stuffy or runny nose, back pain, muscle pain, nausea, dizziness, and rash.
Uncommon adverse events (<2%) have been reported in controlled clinical trials of tadalafil for once daily use or use as needed. A causal relationship of these events to tadalafil use is uncertain. Body as a whole — asthenia, face edema, fatigue, pain Cardiovascular — angina pectoris, chest pain, hypotension, myocardial infarction, postural hypotension, palpitations, syncope, tachycardia Digestive — abnormal liver function tests, dry mouth, dysphagia, esophagitis, gastritis, GGTP increased, loose stools, nausea, upper abdominal pain, vomiting Musculoskeletal — arthralgia, neck pain Nervous — dizziness, hypesthesia, insomnia, paresthesia, somnolence, vertigo Respiratory — dyspnea, epistaxis, pharyngitis Skin and Appendages — pruritus, rash, sweating Ophthalmologic — blurred vision, changes in color vision, conjunctivitis (including conjunctival hyperemia), eye pain, lacrimation increase, swelling of eyelids Otologic — sudden decrease or loss of hearing, tinnitus Urogenital — erection increased, spontaneous penile erection

Important Safety Information

Do not take Viagra® (sildenafil citrate) if you:
  • take any medicines called nitrates, often prescribed for chest pain, or guanylate cyclase stimulators like Adempas (riociguat) for pulmonary hypertension. Your blood pressure could drop to an unsafe level
  • are allergic to Viagra®, as contained in Viagra® and REVATIO, or any of the ingredients in Viagra®
Discuss your health with your doctor to ensure that you are healthy enough for sex. If you experience chest pain, dizziness, or nausea during sex, seek immediate medical help
Viagra® can cause serious side effects. Rarely reported side effects include:
  • an erection that will not go away (priapism). If you have an erection that lasts more than 4 hours, get medical help right away. If it is not treated right away, priapism can permanently damage your penis
  • sudden vision loss in one or both eyes. Sudden vision loss in one or both eyes can be a sign of a serious eye problem called non-arteritic anterior ischemic optic neuropathy (NAION). Stop taking Viagra® and call your healthcare provider right away if you have any sudden vision loss
  • sudden hearing decrease or hearing loss. Some people may also have ringing in their ears (tinnitus) or dizziness. If you have these symptoms, stop taking Viagra® and contact a doctor right away
Before you take Viagra®, tell your healthcare provider if you:
  • have or have had heart problems such as a heart attack, irregular heartbeat, angina, chest pain, narrowing of the aortic valve, or heart failure
  • have had heart surgery within the last 6 months
  • have pulmonary hypertension
  • have had a stroke
  • have low blood pressure, or high blood pressure that is not controlled
  • have a deformed penis shape
  • have had an erection that lasted for more than 4 hours
  • have problems with your blood cells such as sickle call anemia, multiple myeloma, or leukemia
  • have retinitis pigmentosa, a rare genetic (runs in families) eye disease
  • have ever had severe vision loss, including an eye problem called NAION
  • have bleeding problems
  • have or have had stomach ulcers
  • have liver problems
  • have kidney problems or are having kidney dialysis have any other medical conditions
Viagra® can cause small declines in your blood pressure that may cause dizziness, lightheadedness or even fainting in people sensitive to blood pressure changes. Be sure that you are well-hydrated and in a safe, controlled environment the first time that you take Viagra®.
Tell your healthcare provider about all the medicines you take, including prescription and over-the-counter medicines, vitamins, and herbal supplements.
Viagra® may affect the way other medicines work, and other medicines may affect the way Viagra® works, causing side effects. Especially tell your healthcare provider if you take any of the following:
  • medicines called nitrates
  • medicines called guanylate cyclase stimulators such as Adempas (riociguat)
  • medicines called alpha-blockers such as Hytrin (terazosin HCl), Flomax (tamsulosin HCl), Cardura (doxazosinmesylate), Minipress (prazosin HCl), Uroxatral (alfuzosin HCl), Jalyn (dutasteride and tamsulosin HCl), or Rapaflo (silodosin). Alpha-blockers are sometimes prescribed for prostate problems or high blood pressure. In some patients, the use of Viagra® with alpha-blockers can lead to a drop in blood pressure or to fainting
  • medicines called HIV protease inhibitors, such as ritonavir (Norvir), indinavir sulfate (Crixivan), saquinavir (Fortovase or Invirase), or atazanavir sulfate (Reyataz)
  • some types of oral antifungal medicines, such as ketoconazole (Nizoral) and itraconazole (Sporanox)
  • some types of antibiotics, such as clarithromycin (Biaxin), telithromycin (Ketek), or erythromycin
  • other medicines that treat high blood pressure
  • other medicines or treatments for ED
  • Viagra® contains Viagra®, which is the same medicine found in another drug called REVATIO. REVATIO is used to treat a rare disease called pulmonary arterial hypertension (PAH). Viagra® should not be used with REVATIO or with other PAH treatments containing Viagra® or any other PDE5 inhibitors (such as Adcirca [tadalafil])
Viagra® does not protect against sexually transmitted diseases, including HIV.
The most common side effects of Viagra®: headache; flushing; upset stomach; abnormal vision, such as changes in color vision (such as having a blue color tinge) and blurred vision; stuffy or runny nose; back pain; muscle pain; nausea; dizziness; rash.
Viagra® (sildenafil citrate) is prescription medicine used to treat erectile dysfunction (ED).
Viagra® is not for women or children.

Important Safety Information

Do not take Tadalafil (Cialis) if you:
  • take any medicines called nitrates, often prescribed for chest pain, or guanylate cyclase stimulators like Adempas (riociguat) for pulmonary hypertension. Your blood pressure could drop to an unsafe level
  • are allergic to Tadalafil or any of the ingredients in Tadalafil
Discuss your health with your doctor to ensure that you are healthy enough for sex. If you experience chest pain, dizziness, or nausea during sex, seek immediate medical help
Tadalafil can cause serious side effects. Rarely reported side effects include:
  • an erection that will not go away (priapism). If you have an erection that lasts more than 4 hours, get medical help right away. If it is not treated right away, priapism can permanently damage your penis
  • sudden vision loss in one or both eyes. Sudden vision loss in one or both eyes can be a sign of a serious eye problem called non-arteritic anterior ischemic optic neuropathy (NAION). Stop taking Tadalafil and call your healthcare provider right away if you have any sudden vision loss
  • sudden hearing decrease or hearing loss. Some people may also have ringing in their ears (tinnitus) or dizziness. If you have these symptoms, stop taking Tadalafil and contact a doctor right away
Before you take Tadalafil, tell your healthcare provider if you:
  • have or have had heart problems such as a heart attack, irregular heartbeat, angina, chest pain, narrowing of the aortic valve, or heart failure
  • have had heart surgery within the last 6 months
  • have pulmonary hypertension
  • have had a stroke
  • have low blood pressure, or high blood pressure that is not controlled
  • have a deformed penis shape
  • have had an erection that lasted for more than 4 hours
  • have problems with your blood cells such as sickle cell anemia, multiple myeloma, or leukemia
  • have retinitis pigmentosa, a rare genetic (runs in families) eye disease
  • have ever had severe vision loss, including an eye problem called NAION
  • have bleeding problems
  • have or have had stomach ulcers
  • have liver problems
  • have kidney problems or are having kidney dialysis have any other medical conditions
Tadalafil can cause small declines in your blood pressure that may cause dizziness, lightheadedness or even fainting in people sensitive to blood pressure changes. Be sure that you are well-hydrated and in a safe, controlled environment the first time that you take tadalafil
Tell your healthcare provider about all the medicines you take, including prescription and over-the-counter medicines, vitamins, and herbal supplements.
Tadalafil may affect the way other medicines work, and other medicines may affect the way Tadalafil works, causing side effects. Especially tell your healthcare provider if you take any of the following:
  • medicines called nitrates
  • medicines called guanylate cyclase stimulators such as Adempas (riociguat)
  • medicines called alpha-blockers such as Hytrin (terazosin HCl), Flomax (tamsulosin HCl), Cardura (doxazosin mesylate), Minipress (prazosin HCl), Uroxatral (alfuzosin HCl), Jalyn (dutasteride and tamsulosin HCl), or Rapaflo (silodosin). Alpha-blockers are sometimes prescribed for prostate problems or high blood pressure. In some patients, the use of Tadalafil with alpha-blockers can lead to a drop in blood pressure or to fainting
  • medicines called HIV protease inhibitors, such as ritonavir (Norvir), indinavir sulfate (Crixivan), saquinavir (Fortovase or Invirase), or atazanavir sulfate (Reyataz)
  • some types of oral antifungal medicines, such as ketoconazole (Nizoral) and itraconazole (Sporanox)
  • some types of antibiotics, such as clarithromycin (Biaxin), telithromycin (Ketek), or erythromycin
  • other medicines that treat high blood pressure
  • other medicines or treatments for ED
  • Tadalafil should not be used with REVATIO or with other PAH treatments containing PDE5 inhibitors.
Tadalafil does not protect against sexually transmitted diseases, including HIV.
The most common side effects of Tadalafil: headache; flushing; upset stomach; abnormal vision, such as changes in color vision (such as having a blue color tinge) and blurred vision; stuffy or runny nose; back pain; muscle pain; nausea; dizziness; rash.