Viagra (sildenafil citrate) was the first FDA-approved pill to treat erectile dysfunction (ED). Viagra went on the market in 1998 and has since become the most popular ED treatment on the market. Viagra works for most men regardless of age, starts to work quickly and lasts up to four hours.
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Advantage of Viagra
Viagra starts to take effect in as little as 14 minutes in some men, making it one of the fastest acting erectile dysfunction drugs available. Studies show Viagra works for 80% of men with ED. It helps them achieve harder erections and keep the erections longer.
Some men may experience more than one erection per dose of Viagra. Viagra lasts up to 4 hours. Viagra is covered by most national health care plans. And because Viagra has been on the market and in wide use longer than the other ED pills, it has a longer track record of successful use in a worldwide population of men.
How Viagra Works
Viagra is known as a PDE5 inhibitor, just as Cialis and Levitra are. All three erectile dysfunction drugs work by allowing the blood vessels that supply the penis with blood to relax, which increases blood flow during sexual stimulation. Greater blood flow leads to harder erections that last longer. Without sexual stimulation, Viagra will not cause an erection to occur. And when the stimulation is ended, the erection will go away. Viagra works in most men regardless of how old they are or how long they've had ED.
How to Take Viagra
Viagra is taken one hour before sexual activity. Some form of sexual stimulation is needed for Viagra to work.
For most men, the recommended initial dose of Viagra is 50 mg but depending on your individual tolerance, the dosage may be increased up to 100 mg or decreased to 25 mg. Do not take Viagra more than once daily. Do not take Viagra within 24 hours of taking any other ED prescription medication.
Taking Viagra with a high fat meal may reduce its absorption and effectiveness. Viagra does not protect against sexually transmitted diseases.
Viagra Side Effects
The most common side effects of taking Viagra are minor and they include headache, flushing, upset stomach, abnormal vision, diarrhea, dizziness, and rash.
