How does sildenafil

Not every pharmacy stocks this drug. When filling your prescription, be sure to call ahead to make sure your pharmacy carries it. Many insurance companies require prior authorization for this drug. This means your doctor may need to get approval from your insurance company before your insurance company will pay for the prescription.

Why is sildenafil prescribed? Sildenafil under the brand name Viagra is prescribed to treat erectile dysfunction by increasing blood flow to the penis during arousal. Sildenafil under the brand name Revatio is often prescribed to help adults with PAH get more exercise by treating their condition. What if I forget to take it? If you are taking Revatio and you forget to take your scheduled dose, take it as soon as possible.

However, you should never double your dosage. Are there any safety measures I should take before using this drug? Like most medications, there are precautions you should take before using this drug. Make sure you talk with your doctor about:. There are other drugs available to treat your condition.

Some may be better suited for you than others. Talk with your doctor about other drug options that may work for you. However, tadalafil has a few distinctions from sildenafil. Tadalafil is the generic name for the erectile dysfunction drug Cialis.

There are two versions of the drug:. Cialis 5-mg daily dosing is the only PDE5 inhibitor dose approved for treating an enlarged prostate; improving ED symptoms is an added benefit of the daily dose. Also, tadalafil tends to:. The main difference between generic sildenafil and Viagra is marketing. The main ingredient in Viagra is sildenafil, meaning that the drugs are essentially the same.

However, Viagra is marketed and prescribed strictly for erectile dysfunction, while generic sildenafil can be prescribed for PAH as well. Disclaimer: Healthline has made every effort to make certain that all information is factually correct, comprehensive, and up to date. However, this article should not be used as a substitute for the knowledge and expertise of a licensed healthcare professional.

You should always consult your doctor or other healthcare professional before taking any medication. The drug information contained herein is subject to change and is not intended to cover all possible uses, directions, precautions, warnings, drug interactions, allergic reactions, or adverse effects. The absence of warnings or other information for a given drug does not indicate that the drug or drug combination is safe, effective, or appropriate for all patients or all specific uses.

You may assume the likelihood of erectile dysfunction increases with age, but this isn't always the case. Aging doesn't necessarily mean you're….

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Find out about treatments for pulmonary arterial…. Pulmonary hypertension is a progressive, quickly advancing disease. It results when the arteries carrying blood from the right side of the heart to…. Here's how to shop Viagra smartly. Various aphrodisiac foods may boost your sex drive and improve erectile concerns. Here are 7 foods and supplements that work like Viagra. VigRX Plus is marketed as a safe supplement to enhance sexual performance, but does it actually work? We review the research.

Get the facts on 5 over-the-counter ED pills. Discover how options like DHEA and yohimbe can help treat erectile dysfunction. Learn about warnings and…. Health Conditions Discover Plan Connect. Disclaimer: This article is for information only and should not be used for the diagnosis or treatment of medical conditions. Egton Medical Information Systems Limited has used all reasonable care in compiling the information but make no warranty as to its accuracy. Consult a doctor or other health care professional for diagnosis and treatment of medical conditions.

For details see our conditions. Sildenafil is for the treatment of adult men with erectile dysfunction. In this article About sildenafil for erectile dysfunction Before taking sildenafil How to take sildenafil for erectile dysfunction Getting the most from your treatment Can sildenafil cause problems?

How to store sildenafil Important information about all medicines. Sildenafil for erectile dysfunction Aronix, Viagra, Vizarsin In this article About sildenafil for erectile dysfunction Before taking sildenafil How to take sildenafil for erectile dysfunction Getting the most from your treatment Can sildenafil cause problems? Worried about erectile dysfunction? Book now. Very common sildenafil side-effects these affect more than 1 in 10 men What can I do if I experience this? Headache Drink plenty of water.

If the headaches continue, let your doctor know Common sildenafil side-effects these affect fewer than 1 in 10 men What can I do if I experience this? If you have any questions about this medicine ask your pharmacist. Are you protected against flu? Further reading and references.

Join the discussion on the forums. It may only last a few minutes, but it can last as long as a few hours or days. However, a study found that Viagra may decrease this recovery time. Viagra usually leaves your system after 2 to 3 hours. Depending on your metabolism, Viagra can take 5 to 6 hours to fully leave your system. A higher dosage will take longer to leave your body. A mg dose may wear off after a couple of hours, but a mg dose may take nearly four times as long to leave your system.

Viagra often lasts for a few hours. Never take more than mg of Viagra in a hour period. Too much Viagra can cause severe headache, low blood pressure, and orthostasis drop in blood pressure when standing that can lead to fainting.

Higher doses can also cause priapism , a painful erection that lasts longer than 4 hours. Get emergency treatment right away if this happens. Talk with your doctor before you take Viagra or any related medication for ED. Some medications for heart conditions, such as nitroglycerin and other nitrates, can interact dangerously with Viagra and cause your blood pressure to drop too low.

Viagra typically starts working within 30 to 60 minutes and lasts for about 2 to 3 hours after that. An erection self-test is a procedure a man can do by himself to determine if the cause of his erectile dysfunction is physical or psychological. Plenty of standard erectile dysfunction treatments exist, but many men prefer natural treatments.

Here's a look at six options. You may assume the likelihood of erectile dysfunction increases with age, but this isn't always the case. Aging doesn't necessarily mean you're…. Viagra, Cialis, Levitra, and Stendra are oral medications for treating erectile dysfunction.

Check out side-by-side comparisons of all four drugs. Experts say using too large a dose of Viagra when first starting the erectile dysfunction drug can lead to temporary vision issues.