This information is not a substitute for medical advice. Always speak with your doctor or pharmacist about dosages that are right for you.
Your doctor may start you on a lowered dosage of sildenafil. This can help prevent levels of this drug from building up in your body.
For people with sickle cell anemia: This drug may cause a common painful complication of sickle cell anemia called vaso-occlusive crisis. If you have sickle cell anemia, ask your doctor whether this drug is safe for you.
Sildenafil can be used as early as 4 hours before sex and as late as 30 minutes before sex. However, it is recommended to use this drug within an hour before sex.
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Sildenafil oral tablet is used to treat ED and PAH. Generic oral tablets are available for both conditions, but the brand-name drugs each treat only one of the conditions.
These problems include a heart attack, stroke, or life threatening heart rhythm problem. Also talk with your doctor if you have a low or high resting blood pressure, or a history of heart failure or coronary artery disease.
All possible dosages and drug forms may not be included here. Your dosage, drug form, and how often you take the drug will depend on:
Do not take these drugs with sildenafil. Doing so can cause dangerous effects in the body. Examples of these drugs include:
Taking these drugs with sildenafil can cause your blood pressure to drop suddenly to an unsafe level.
Use in children warning: Children generally should not take sildenafil; however, there are instances where the drug is considered the best treatment option. Talk with your child’s doctor to better understand the benefits and risks associated with this treatment option.
For seniors: The kidneys, liver, or heart of older adults may not work as well as they used to. This can cause your body to process drugs more slowly. As a result, a higher amount of a drug stays in your body for a here longer time. This raises your risk for side effects.
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Sildenafil oral tablet is available as the brand-name drugs Viagra and Revatio. It’s also available as a generic drug. Generic drugs usually cost less than the brand-name version. In some cases, they may not be available in every strength or form as the brand-name drug.