Viagra

Viagra is a remarkably effective, easy-to-use treatment for ED. All a man has to do is swallow a pill about an hour before sexual activity and he can then respond naturally to sexual stimulation. It works regardless of the underlying cause of ED and has proved to be an effective treatment for seven out of ten men with the condition.

There can be side-effects, although they are seldom serious. The most common are headaches, facial flushing and indigestion. Only two in every hundred men stop using the drug because of the side-effects.

Men taking drugs containing nitrates should not use Viagra as the two drugs in combination can cause large and sudden drops in blood pressure. Nitrates are used in some drugs prescribed for angina and can also be found in the recreational drug known as "poppers". Men with low blood pressure shouldn't use Viagra either.