Generic Name: Sildenafil

  • What is this medication and its most common uses?

    Revatio is a medicine used to improve exercise ability in people with pulmonary arterial hypertension (PAH) (high blood pressure in the arteries of your lungs). Revatio is available as tablets and an oral suspension.

  • What should I know when beginning and continuing on this medication?

    How does this medication work?

    Over time, the arteries in the lungs of people with PAH become narrow. This narrowing decreases the blood flow from the heart to the lungs. Revatio works by relaxing and widening the blood vessels in your lungs, allowing your blood to flow through with less resistance.

    What are the beneficial effects of this medication and when should I begin to have results?

    What: Revatio has been shown to improve exercise ability, such as the distance you are able to walk.

    When: Everyone responds differently to treatment, so try to be patient and follow your healthcare provider's directions. It is very important to keep taking Revatio as prescribed to keep your condition under control.

    How do I know it is working?

    You may notice an improvement in your exercise ability once you begin taking Revatio. This is a good indicator that your medication is working. Your healthcare provider may ask you questions to assess how well your symptoms are controlled.

  • What are the possible side effects of this medication?

    The following is not a full list of side effects. Side effects cannot be anticipated. If any develop or change in intensity, tell your healthcare provider as soon as possible. Only your healthcare provider can determine if it is safe for you to continue taking this medication.

    More common side effects may include: nosebleeds, headache, upset stomach, flushing (warm, hot, burning feeling to your face), trouble sleeping, redness of your skin, shortness of breath, runny nose.

    Less common side effects may include:

    Low blood pressure with symptoms such as dizziness, lightheadedness, or fainting. Lie down if you feel faint or dizzy.

    An erection that lasts many hours. Get medical help right away if you get an erection that lasts more than 4 hours. If this is not treated right away, permanent damage to your penis can occur.

    Sudden decrease or loss in hearing, with symptoms such as ringing in your ears or dizziness.

    Sudden decrease or loss of vision in one or both eyes may also occur.

  • Who should not take this medication?

    Do not take Revatio if you are allergic to it or any of its ingredients.

    Do not take Revatio if you take any medicines called "nitrates." 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. Ask your healthcare provider or pharmacist if you are not sure if any of your medicines are nitrates.

  • What should I tell my healthcare provider before I take the first dose of this medication?

    Tell your healthcare provider about all prescription, over-the-counter, and herbal medications you are taking before beginning treatment with Revatio. Also, talk to your healthcare provider about your complete medical history, especially if you have heart problems (such as chest pain, heart failure, irregular heartbeats, or have had a heart attack), low or high blood pressure, blood circulation problems, retinitis pigmentosa (eye disease that involves damage to the layer of tissue in the back of the eye, called the retina), pulmonary veno-occlusive disease, blood cell problems (such as sickle cell anemia), bleeding problems (including ulcers in your stomach), any problems with the shape of your penis (such as may occur with a condition known as Peyronie's disease), or if you ever had vision loss in one or both eyes.

  • What is the usual dosage?

    The information below is based on the dosage guidelines your healthcare provider uses. Depending on your condition and medical history, your healthcare provider may prescribe a different regimen. Do not change the dosage or stop taking your medication without your healthcare provider's approval.

    Adults: The recommended dose is 20 milligrams three times a day (about 4 to 6 hours apart).

  • How should I take this medication?

    Take Revatio exactly as prescribed by your healthcare provider. Do not change your dose or stop taking Revatio without first talking to your healthcare provider.

    Shake Revatio oral suspension well for at least 10 seconds before each use.

    Please review the instructions that came with your prescription on how to properly take Revatio oral suspension.

  • What should I avoid while taking this medication?

    Do not take Revatio with Viagra or other medicines for erectile dysfunction (an inability to attain or maintain an erection). Revatio contains the same medicine as Viagra.

    Do not mix Revatio oral suspension with other medicines or flavoring. Revatio oral suspension will be mixed for you by your pharmacist.

  • What are the possible food and drug interactions associated with this medication?

    If Revatio is taken with certain other drugs, the effects of either could be increased, decreased, or altered. It is especially important to check with your healthcare provider before combining Revatio with the following: blood pressure/heart medications (such as amlodipine or doxazosin), nitrates, or ritonavir.

  • May I receive this medication if I am pregnant or breastfeeding?

    The effects of Revatio during pregnancy and breastfeeding are unknown. Tell your healthcare provider immediately if you are pregnant, plan to become pregnant, or are breastfeeding.

  • What should I do if I miss a dose of this medication?

    If you miss a dose of Revatio, take it as soon as you remember. However, if it is almost time for your next dose, skip the one you missed and return to your regular dosing schedule. Do not take two doses at once.

  • How should I store this medication?

    Store Revatio tablets at room temperature.

    Store Revatio oral suspension at room temperature or in the refrigerator. Do not freeze the oral suspension. Throw away any remaining oral suspension after 30 days.

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I'm Kristen Dore, PharmD. Welcome to PDR Health!

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