How to use Sildenafil Tablet
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, ask your doctor or pharmacist.
To treat erectile dysfunction-ED, take this drug by mouth as directed by your doctor, usually as needed.
Take sildenafil 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.
The dosage 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).
Dizziness, headache, flushing, or stomach upset may occur.
Vision changes such as increased sensitivity to light, blurred vision, or trouble telling blue and green colors apart may also occur.
If any of these effects last or get worse, 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 this medication has been prescribed because your doctor has judged that the benefit to you is greater than the risk of side effects.
Many people using this medication do not have serious side effects.
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.
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.
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.
Sildenafil can cause a serious drop in your blood pressure when used with nitrates. A serious drop in blood pressure can lead to dizziness, fainting, and rarely heart attack or stroke.
Do not use sildenafil with any of the following: certain drugs used to treat chest pain/angina (nitrates such as nitroglycerin, isosorbide), recreational drugs called “poppers” containing amyl nitrate, amyl nitrite, or butyl nitrite.