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What is Sildenafil Viagra pills used for?

What is Sildenafil Viagra pills used for? Dosage Sildenafil (Generic Viagra, Revatio) is a medication used to treat erectile dysfunction (ED) in men who suffer from impotence, or the inability to get or maintain an erection. In combination with sexual stimulation, Viagra use works by increasing blood flow to the penis to help a man get an erection and maintain it during sexual intercourse. Viagra for woman is best known by the brand name Viagra.

Sildenafil is usually prescribed to be taken as needed prior to sex. Viagra use generally starts to work within 30 to 60 minutes, but can be taken up to 4 hours prior to sexual activity.

Sildenafil does not prevent the spread of sexually transmitted diseases (such as HIV, hepatitis B, gonorrhea, syphilis, and others); to protect against infection you should always use a latex condom when having intercourse or when you are engaged in sexual activity. Consult your doctor or pharmacist for more information or with any questions.

How to use

Read the Patient Information Leaflet provided by your pharmacist before you start taking sildenafil and each time you get a refill. If you have any questions about what is Sildenafil Viagra pills used for? ask your doctor or pharmacist.

  • To treat erectile dysfunction-ED, take dosage Sildenafil by mouth as directed by your doctor, usually as needed.
  • Take Viagra use at least 30 minutes, but no more than 4 hours, before sexual activity (1 hour before is the most effective).
  • Do not take more than once daily.

A high-fat meal may delay how quickly the drug begins to work.

Dosage Sildenafil is based on your medical condition, response to treatment, and other medications you may be taking. Be sure to tell your doctor and pharmacist about all the products you use (including prescription drugs, nonprescription drugs, and herbal products).

Tell your doctor if your condition does not improve.

Side effects

  • Dizziness
  • headache
  • flushing
  • stomach upset
  • Vision changes
  • blurred vision
  • trouble telling blue and green colors apart

If any of these Viagra use effects persist or worsen, tell your doctor or pharmacist promptly.

To reduce the risk of dizziness and lightheadedness, get up slowly when rising from a sitting or lying position.

Remember that your doctor has prescribed this medication because he or she has judged that the benefit to you is greater than the risk of side effects. Many people using this medication do not have serious Viagra use.

Sexual activity may put extra strain on your heart, especially if you have heart problems. If you have heart problems and experience any of these serious side effects while having sex, stop and get medical help right away: severe dizziness, fainting, chest/jaw/left arm pain, nausea.

Some rare and serious side effects

Rarely, sudden decreased vision, including permanent blindness, in one or both eyes (NAION) may occur. If this serious problem occurs, stop taking sildenafil and get medical help right away. You have a slightly greater chance of developing NAION if you have heart disease, diabetes, high cholesterol, certain other eye problems (‘crowded disk’), high blood pressure, if you are over 50, or if you smoke.

Rarely, a sudden decrease or loss of hearing, sometimes with ringing in the ears and dizziness, may occur. Stop taking sildenafil and get medical help right away if these effects occur.

In the rare event you have a painful or prolonged erection lasting 4 or more hours, stop using this drug and get medical help right away, or permanent problems could occur.

A very serious allergic reaction to Viagra for woman is rare. However, get medical help right away.

 Warnings & Precautions

Sildenafil Precautions

  1. Before taking the dosage Sildenafil, tell your doctor or pharmacist if you are allergic to it.
  2. Before using dosage Sildenafil, tell your doctor or pharmacist your medical history.
  3. Do not drive, use machinery, or do anything that needs alertness or clear vision until you can do it safely.
  4. Limit alcoholic beverages.
  5. Before having surgery, tell your doctor or dentist about all the products you use.

During pregnancy, Viagra use should be used only when clearly needed. Since high blood pressure in the lungs is a serious condition that can harm both a pregnant woman and her unborn baby, do not stop Viagra for woman unless directed by your doctor. If you are planning pregnancy, become pregnant, or think you may be pregnant, talk to your doctor about the benefits and risks of using Viagra for woman.

Viagra for woman passes into breast milk in small amounts. Consult your doctor before breastfeeding.


Store Viagra pills at room temperature away from light and moisture. Do not store in the bathroom. Keep all medications away from children and pets.

Do not flush medications down the toilet or pour them into a drain unless instructed to do so. Properly discard this product when it is expired or no longer needed. Consult your pharmacist or local waste disposal company.

Drug interactions

Drug interactions may change how your medications work or increase your risk for serious side effects. This document does not contain all possible drug interactions. Keep a list of all the products you use (including prescription/nonprescription drugs and herbal products) and share it with your doctor and pharmacist. Do not start, stop, or change the dosage of any medicines without your doctor’s approval.

A product that may interact with this drug is riociguat.


20 mg, 25 mg, 50 mg, 100 mg



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