Sildenafil is a medication used to treat erectile dysfunction and pulmonary arterial hypertension. It works by increasing blood flow to the penis during sexual stimulation. Sildenafil is a phosphodiesterase type 5 (PDE5) inhibitor.

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Frequently Asked Questions about Sildenafil


Sildenafil is a medication used to treat Erectile Dysfunction (ED) in men. It is the active ingredient in Viagra, the most popular ED medication on the market. If you are considering taking Sildenafil, you might have some questions about the medication. Here are some frequently asked questions and their answers:

How popular is Sildenafil?

Sildenafil is the most prescribed medication for ED in the world. It was introduced in 1998 and has since been used by millions of men worldwide. It is estimated that around 20 million men in the United States alone have used Sildenafil.

What conditions can be treated with Sildenafil?

Sildenafil is primarily used to treat ED, but it can also be used to treat pulmonary arterial hypertension (PAH), a condition in which there is high Blood Pressure in the arteries of the lungs. In this case, Sildenafil works by relaxing the blood vessels in the lungs, which allows blood to flow more easily.

What are some important facts that patients should know before taking Sildenafil?

  • Sildenafil should not be taken if you are also taking nitrates, which are commonly used to treat chest pain.
  • Sildenafil should not be taken if you have severe liver or kidney disease.
  • Sildenafil should not be taken if you have had a recent heart attack or stroke.

What is the history of Sildenafil?

Sildenafil was originally developed as a medication to treat angina (chest pain caused by lack of blood flow to the heart). During clinical trials, it was found to have the unexpected side effect of causing erections in some men. This led to its development as a treatment for ED.

How does Sildenafil work?

Sildenafil works by relaxing the blood vessels in the penis, which increases blood flow and allows for an erection to occur. It does not cause an erection on its own - sexual stimulation is still required.

How long does Sildenafil last?

Sildenafil typically lasts for around four hours. However, the exact length of time it lasts can vary depending on factors such as age, weight, and dosage.

What are some common side effects of Sildenafil?

Some common side effects of Sildenafil include headache, facial flushing, and indigestion. These side effects are usually mild and go away on their own, but if they persist or become more severe, you should contact your doctor.

How should Sildenafil be taken?

Sildenafil should be taken approximately 30 minutes to one hour before sexual activity. It can be taken with or without food, but it may take longer to work if taken with a high-fat meal.

Can Sildenafil be taken by women?

Sildenafil has not been approved for use in women.

Can Sildenafil be taken with alcohol?

It is generally safe to take Sildenafil with a moderate amount of alcohol. However, excessive alcohol consumption can reduce the effectiveness of the medication and increase the risk of side effects.

Can Sildenafil be taken with other medications?

Sildenafil can interact with certain medications, including nitrates and some alpha-blockers. It is important to tell your doctor about all medications you are taking before starting Sildenafil.

Can Sildenafil be taken by men with Diabetes?

Yes, Sildenafil can be taken by men with Diabetes. However, men with diabetes may be at a higher risk of developing ED, so it is important to consult with a doctor to determine the cause of the ED and the best treatment options.

Can Sildenafil be taken by men with high Blood Pressure?

Sildenafil can generally be safely taken by men with high blood pressure. However, it is important to consult with a doctor to determine the best treatment options.

Is Sildenafil covered by insurance?

It depends on the individual insurance plan. Some insurance plans do cover Sildenafil for the treatment of ED, while others do not. It is important to check with your insurance provider to determine coverage.

Is Sildenafil available over the counter?

No, Sildenafil is not available over the counter. It requires a prescription from a doctor.

How can I order Sildenafil?

Sildenafil can be ordered through a licensed online pharmacy or obtained with a prescription from a local pharmacy.

Where can I buy Sildenafil?

Sildenafil can be purchased at a local pharmacy with a prescription from a doctor. It can also be purchased through a licensed online pharmacy.

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