Generic Viagra is Sildenafil Citrate drug designed to relieve the symptoms of erectile dysfunction, notably the inability to achieve and sustain an erection. It may be available in a variety of presentations, the best known being the regular tablets. Generic Viagra is taken about an hour before having sexual relations, and its effects may last between four and six hours. Sildenafil Citrate is effective in most cases of erectile dysfunction regardless of the cause, it does require sexual stimulation to work, however.

Generic Viagra works in the same manner as its branded name counterpart, thanks to the active ingredient Sildenafil Citrate. Sildenafil Citrate increases blood circulation into the penis by blocking the action of the PDE 5 enzyme, and augmenting the levels of of another enzyme called cGMP. Consequently, the blood vessel widen and let more blood flow through them. By receiving and retaining enough blood, the penis is enabled to react properly to sexual arousal, with an erection that is firm enough to last throughout sexual intercourse.

Before starting treatment with generic Viagra, there are a few side effects and precautions that need to be heeded. Some adverse effects are high blood pressure problems, irritable bowel syndrome, stomach upset, headache, eye-sight issues, unexpected hearing loss and facial flushing. These side effects are mild and disappear soon after the body has adapted to the new therapy. Other more serious side effects are possible but seldom reported. Other considerations to bear in mind include the fact that Sildenafil Citrate is only prescribed for adult men with erectile dysfunction. It should not be used in combination with other ED treatments, or with nitrate medicines or alpha blockers. Patients should let their doctors know about any medical conditions and medications that they have respectively experienced or taken, both in the past and currently.

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