Many men suffer from erectile dysfunction either because of age or any number of medical conditions, which also can include medications taken for the condition. Viagra took the impotency market by storm in the late 90s and now has millions of men considering it a 'miracle drug'. Men who have problems having or maintain an erection take Viagra and the problem is cured. There is a variation on how successfully Viagra works depending on the man and the reason for the erectile dysfunction.

Vigara works because men have levels of cyclic GMP, which when a man is stimulated causes blood into the penis creating an erection. When a man takes Vigara, his levels of cyclic GMP are elevated by not allowing phosphodiesterase (enzyme) to play a part in the mix, which causes cyclic GMP to stop doing it's job faster, thus little or no erection.

Many men see their physician for impotency. In turn, the physician will prescribe Vigara or a generic form to treat the condition. The difference in purchasing a generic form of Vigara is the price is substantially lower. The physician will also discuss how Vigara works, its benefits and side effects. Although most men can take it without harm, there are a few exceptions.

Still other men, growing in numbers, will go to the Internet to search the thousands of websites that have Vigara offered online. Whenever a man purchases Vigara online, before making a purchase he should always check with his physician first especially if he has other medical problems that he is being treated for. If the physician feels that purchasing Vigara or its generic brands online is a viable idea then a careful, detailed search of websites that sell the product should be initiated. Any foreign site should be avoided. There are many sites that sell illegal or imitation 'fake' Vigara pills, and a man will have no idea what he, in fact, is purchasing. Many of these drugs have never been tested and could prove detrimental to a man's health.

A prescription from your physician guarantees that you are getting the correct medication in 25mg to 100mg dosages. Generally, the prices for Viagra purchased online are about the same as those purchased at a local pharmacy. If a substantially lowered price is offered — buyer beware. It could be a rip off and a bogus purchase. This is a red-flag when it comes to Viagra scams.

Viagra, like many drugs, undergoes testing by the FDA to ensure they are safe to take by humans. The drug is also certified by The Verified Internet Pharmacy Practice Sites, and this information should be clearly indicated on the website you are interested in. Depending on the dosage purchased and whether it is Viagra or a generic brand, prices can be as much as $90 for a few pills up to $1000 or more for 100 pills. Generic brands are less, generally saving the buyer at least a third of brand name. Shipping is usually the choice of the buyer, either regular mail, UPS or FedX.