Viagra can lower blood flow to the optic nerve in your eye, which may cause sudden vision loss. Most people who experience this complication also have heart disease, high blood pressure, high cholesterol, diabetes, or specific eye problems. Being a smoker and over 50 years of age also increases the risk of vision issues.
A: There is no generic on the market for Viagra (sildenafil). Do not believe what you read on the Internet or the great prices you see. Many of these sites do not contain the medication you are paying for. Ask your health care provider for samples or coupons to help with the cost of this medication. Gerald R. Levy, RPh.
Many factors can influence how long Viagra takes to start working. In general, Viagra takes about 30 minutes to produce noticeable effects. But your diet, your overall health, the medications you’re taking, underlying conditions, and much more can all affect the amount of time Viagra takes to work in your body and how long it lasts.
Viagra may not work again immediately after you’ve had sex. Normally, you can’t get another erection right after ejaculating because your body isn’t physiologically prepared for it. This is known as the refractory period. It may only last a few minutes, but it can last as long as a few hours or days.
"A therapy that allows a man with ED to engage in intercourse within a 24-hour window permits the couple to regain spontaneity in their sexual relationship."
Experts commenting on the studies said it was too early to tell if Cialis represented an improvement on Viagra.
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