Viagra is the world’s most famous drug for treating erectile dysfunction and impotence. It covers about 49% of the market of such drugs. Chemists Pfizer synthesized active ingredient in Viagra – Sildenafil in the laboratory of British city Sandwich. At first. they thought that the new drug would be useful for the treatment of angina …
side effects of viagra in older men
15 side effects of Viagra in Australia.
Many men after 45-50 years of age encounter the problem of impotence, where it is impossible to achieve or maintain an erection. This delicate nuance can be resolved with a special drug – Viagra. This drug has a stimulating effect on the penis, and its effect can last up to a few hours.