How Viagra works?
Viagra works 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. You must have sexual stimulation to get an erection. When the sexual experience is over, the erection goes away.
Viagra doesn’t help to delay ejaculation. Viagra works in most men regardless of how old they are, how long they've had ED, or what caused it.
Sildenafil does not cure erectile dysfunction or increase sexual desire.
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