See risks & benefits
A headache, stomach upsets, and flushing are the main side effects, and it should not be taken within 24 hours of a nitrate
If you have erection problems sildenafil works by temporarily increasing blood flow to your penis when you get sexually excited
Most men begin treatment at 25 or 50 mg, but if these lower doses aren't working, their doctor may move them up to 100 mg
As with sildenafil, a high-fat meal or alcohol keep the body from absorbing it as quickly
Sildenafil is used to treat male sexual function problems (impotence or erectile dysfunction-ED)
Vardenafil is more potent than sildenafil and typically requires a lower dosage
Their mechanism of action is
Avanafil exhibited 100 times lower specificity for PDE6 than for PDE5, presumably reducing the potential side effects derived from the nonselective inhibition of
Among the respondents, 55% were taking erectile dysfunction medication, including sildenafil (Viagra), tadalafil (Cialis), vardenafil and avanafil