Sildenafil (Viagra) is used to treat erectile dysfunction (impotence; inability to get or keep an erection) in men. Sildenafil is in a class of medications called phosphodiesterase (PDE) inhibitors. Sildenafil treats erectile dysfunction by increasing blood flow to the penis during sexual stimulation. Sildenafil treats PAH by relaxing the blood vessels in the lungs to allow blood to flow easily. If you are taking sildenafil to treat erectile dysfunction, follow your doctor's directions and the guidelines in this paragraph. The best time to take sildenafil is about 1 hour before sexual activity, but you can take the medication any time from 4 hours to 30 minutes before sexual activity.
Call your doctor if you have any unusual problems while you are taking this medication. Talk to your doctor buy xanax without prescrition about eating grapefruit and drinking grapefruit juice while taking this medicine. DailyMed will deliver this notification to your desktop, Web browser, or e-mail depending on the RSS Reader you select to use. To view updated drug label links, paste the RSS feed address (URL) shown below into a RSS reader, or use a browser which supports RSS feeds, such as Safari for Mac OS X.

What are the most common side effects of sildenafil?

Viagra is intended for adult men suffering from erectile dysfunction and impotence. As seen above, you may only buy Viagra if you have a prescription. Taking Viagra after eating or on an empty stomach works well. However, if you take Viagra after a high-fat meal (e.g. fried food) you might find it takes longer to feel an effect.
It relaxes the blood vessels, allowing for better blood circulation. Sildenafil 50 mg is primarily used to treat erectile dysfunction in men, helping to achieve and maintain an erection when sexually aroused. You should not use Sildenafil with treatments for pulmonary arterial hypertension (PAH) containing sildenafil or any other PDE5 inhibitors.
You should not take Sildenafil if you are taking medicines called nitrates, as the combination of these products may lead to a dangerous fall in your blood pressure. Always tell your doctor or pharmacist if you are taking any of these medicines that are often used for the relief of angina pectoris (or "chest pain"). Sildenafil may cause a mild and temporary drop in blood pressure.

Tell your doctor or pharmacist if you are already taking riociguat. Note that all prescriptions are at the discretion of your health care provider. Providers on Sesame cannot prescribe controlled substances. Tell your healthcare provider if you have any of the following. Sildenafil injection is usually given by a healthcare provider in a hospital or clinic.

Viagra FAQs

This medicine can cause serious side effects in patients with heart problems. Ask your healthcare professional how you should dispose of any medicine you do not use. The amount of medicine that you take depends on the strength of the medicine. This medicine usually begins to work for erectile dysfunction within 30 minutes after taking it. It continues to work for up to 4 hours, although its action is usually less after 2 hours.
The oral tablet is usually used for erectile dysfunction (ED), pulmonary arterial hypertension (PAH), and to improve exercise capacity. This medicine increases blood flow to certain areas of the body by relaxing the muscles of the blood vessels. Smokers are at higher risk than non-smokers of experiencing erectile dysfunction. Reduced flexibility and blood flow in the arteries is the main underlying physical factor. Men who drink large amounts of alcohol are also at increased risk of erectile dysfunction.
Always tell your healthcare provider about any prescription or over-the-counter (OTC) medicines, vitamins/minerals, herbal products, and other supplements you are using. You may be at higher risk for this if you take a blood thinner medicine. Tell your healthcare provider if you get nosebleeds often while taking sildenafil. If your nosebleed is severe or will not stop after applying pressure, get help right away. Sildenafil may cause an unwanted erection that is persistent, painful, and that may occur without sexual arousal. Permanent damage to the penis may occur if priapism is not treated quickly.
Follow the directions on your prescription label carefully, and ask your doctor or pharmacist to explain any part you do not understand. Do not take more or less of it or take it more often than prescribed by your doctor. To treat PAH, Sildenafil might have to be taken thrice in a day. Make sure you take the tablets at around the same time daily. It is best to keep an interval of 4 to 6 hours between two doses.