Common Questions

ED happens when not enough blood flows to the penis, preventing an erection. Erectile dysfunction, or ED, is the medical term for difficulties achieving and keeping an erection. It is a sexual health problem that affects about 30 million men. Your doctor or healthcare professional can give you more complete information or go here for more information.

Studies have shown that most ED is caused by physical health problems. These problems are most commonly high blood pressure, high cholesterol, and diabetes.

VIAGRA is a pill used by men to treat erectile dysfunction, or ED. It can help many men who have erectile dysfunction get and keep an erection when they become sexually excited/stimulated. VIAGRA is also known by its scientific name, sildenafil citrate.

For most men, VIAGRA usually starts to work in about 30 to 60 minutes. VIAGRA works with or without food or alcohol. But to get the quickest results, avoid high-fat meals 2 hours before taking it. A fatty meal – like a cheeseburger and fries – can slow your body’s ability to absorb the drug. When this happens, VIAGRA may not work as quickly.

For most patients, VIAGRA can be taken up to once a day as needed. In patients taking certain protease inhibitors (such as for the treatment of HIV), it is recommended not to exceed a maximum single dose of 25 mg of VIAGRA in a 48-hour period. As always, please consult with your doctor if you have any questions about taking VIAGRA.

For most men with ED, VIAGRA works the first or second time they take it. It's possible you may need to take VIAGRA on 3 or 4 occasions before it works for you. Or you may need to try a different dosage. VIAGRA may not be right for every man, but it has been proven to be effective in up to 4 out of 5 men with ED. More information about how to take VIAGRA is available here. If VIAGRA isn't working for you, your best bet may be to speak to your doctor. Remember; always follow your doctor's instructions closely when taking VIAGRA to get the best results.

Tell your doctor about any medicines you are taking. Do not start or stop taking any medicines before checking with your doctor or pharmacist. This includes prescription and nonprescription medicines or remedies.

You should NOT take VIAGRA with nitrates. If you take any medicines that have nitrates in them (like nitroglycerin for chest pain)—every day or even once in a while—do NOT take VIAGRA. VIAGRA should not be used with other treatments that cause erections. VIAGRA should not be used with REVATIO as REVATIO contains sildenafil, the same medicine found in VIAGRA.

Like all medicines, VIAGRA can cause some side effects. These are usually mild to moderate and usually don't last longer than a few hours. Some of these side effects are more likely to occur with higher doses of VIAGRA. With VIAGRA, the most common side effects are headache, facial flushing, and upset stomach. VIAGRA may also briefly cause bluish or blurred vision or sensitivity to light. If you experience chest pain, nausea, or any other discomfort during sex, or an erection that lasts longer than 4 hours, seek immediate medical help.

In rare instances, men taking PDE5 inhibitors (oral erectile dysfunction medicines, including VIAGRA) reported a sudden decrease or loss of vision in one or both eyes. It is not possible to determine whether these events are related directly to these medicines or to other factors. If you experience sudden decrease or loss of vision, stop taking PDE5 inhibitors, including VIAGRA, and call a doctor right away.

If you have prescription coverage that includes oral ED treatments, it's the cost of your co-pay. For people without prescription drug coverage, the exact price is determined by the pharmacy.

No. There is no generic VIAGRA in the US. Any pills claiming to be "generic VIAGRA" are illegal counterfeits. They have not been approved by the FDA (Food and Drug Administration), and they have not been shown to meet FDA standards. Their ingredients and side effects are unknown and potentially dangerous.

The best way to avoid counterfeit drugs is to purchase prescription medications from a reputable pharmacy with which you are familiar. If you choose to purchase your medicines online, always see your doctor and get a written prescription first. Use an online pharmacy accredited by the National Association of Boards of Pharmacy (NABP). These pharmacies can be located using this Verified Internet Pharmacy Practice Sites® (VIPPS®)-accredited pharmacy list*. Do not buy medications from an online pharmacy that isn't licensed in your country, that offers to write prescriptions, or that sells medications without prescriptions.

VIAGRA is a prescription medicine used to treat erectile dysfunction (ED) and can only be prescribed by a doctor or healthcare professional. Websites that claim to sell VIAGRA without a prescription are operating illegally and may be selling counterfeits.

Although there are many safe ways to buy VIAGRA online, it’s important to know that there are also thousands of websites selling counterfeit medication. These websites often look legitimate, but many are selling fake medicines with potentially dangerous ingredients. Learn more

No. Currently Pfizer is not distributing discounts or coupons for VIAGRA online. One way counterfeiters try to get your attention is by promoting coupon codes or special offers online. They often use these deceptive offers to get you to buy their fake medicines.

If you see an offer online, check that it’s coming from a VIPPS®-accredited website to be sure that it’s legitimate.

If you receive a coupon for VIAGRA and are not sure that it’s legitimate, call our support line at 1-888-4-VIAGRA (1-888-484-2472).