As-needed

Viagra®

Your safety is our first priority. Learn more about key medication details, side effects, and other important info about your treatment at the link below.

Prescribing information

Common Side effects

  • Headache

  • Flushing

  • Nasal congestion

  • GI distress

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.