You can read where to buy viagra on forum, here.

Will VIAGRA work as soon as I take it?

You must be sexually stimulated for VIAGRA to work. In one study, VIAGRA was shown to work in some men in as quickly as 14 minutes. This study included 228 men who’d had success with VIAGRA in the past, each taking 100 mg at least 2 hours after eating. For most men, VIAGRA can work in around 30 minutes. VIAGRA lasts for at least 4 hours, giving you time to enjoy the experience.

What if VIAGRA didn't work the first time?

VIAGRA has been shown to work for more than 80% of men taking VIAGRA 100 mg versus 24% of men taking a sugar pill. So if you’re not getting the results you want, try it again. If you’re still not satisfied, talk to your doctor. Often a dose adjustment is all you need to improve your sex life. To help you get started, fill out the VIAGRA Check-Up form [PDF, 84k]* and give it to your doctor at your next visit.

How often can I take VIAGRA?

For most patients, VIAGRA can be taken once a day, as needed. In patients ta... Read more »

Like all medicines, VIAGRA can cause some side effects. These are usually mild and 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. Although erections lasting for more than four hours may occur rarely with all ED treatments in this drug class, it is important to seek immediate medical attention. Erections lasting longer than six hours can result in long-term loss of potency.

Yes. The safety of VIAGRA has been demonstrated in over 130 clinical trials and among 13,000 men. These trials show that taking VIAGRA is about as safe for your heart as taking a sugar pill. VIAGRA has been used by more than 23 million men worldwide, and over 1 billion doses of VIAGRA have been prescribed. In fact, no other ED therapy has been studied more than VIAGRA.

If you use nitrate drugs, often used for chest pain (known as angina), do not take VIAGRA.

No. VIAGRA works for men who have ED, regardless of how severe or mild their ED is. If VIAGRA helps you get better erections, it doesn’t mean you have severe ED. Even men who have difficulties once in a while can benefit from taking VIAGRA.

VIAGRA comes in 3 doses (25 mg, 50 mg, and 100 mg). Like many medicines, you may benefit from a dose adjustment after starting on VIAGRA. If it doesn't produce the results you want, let your doctor know. Do not take more VIAGRA than your doctor prescribes. In most patients, VIAGRA can be taken up to once a day as needed.

No. You must be sexually excited for VIAGRA to work. If you take VIAGRA and are not sexually stimulated, you will not get an erection. VIAGRA is not a hormone. It is also not an aphrodisiac. It's a prescription medicine that gives men with ED harder erections so they can enjoy a better sex life.

Studies show that VIAGRA improves erections in more than 80% of men taking VIAGRA 100 mg versus 24% of men taking a sugar pill. No other ED tablet is proven to work better.

VIAGRA enables men with ED to respond to sexual stimulation. When a man is sexually excited, the arteries in his penis relax and widen. This allows more blood to flow into the penis. The increased blood flow causes the penis to become hard and erect. The veins that normally carry blood away from the penis then become compressed. This restricts the blood flow out of the penis. With more blood flowing in and less flowing out, the penis enlarges, resulting in an erection.

Sometimes the nerves or blood vessels that are part of this process don’t work properly. If this happens, a man may not be able to get or keep an erection. VIAGRA increases blood flow to the penis, so that when a man is sexually excited, he can consistently get and keep an erection. When he is done having sex, the erection goes away.

VIAGRA is an effective treatment for male erectile dysfunction, or ED. This is also known as impotence. VIAGRA is a little blue pill you take only when you want to have sex. VIAGRA helps men consistently get and keep an erection when they become sexually stimulated.