Given the high cost of the drug called Viagra, it is not surprising that so many men want to know if it actually works as well as claimed. Almost everywhere you look, there are television ads, magazine articles and websites guaranteeing amazing results by taking the tiny blue pills. However, it is important to know whether the drug actually works. First of all, many clinical tests have been taken that prove that Viagra does actually work to help men achieve longer and harder erections. Obviously, each person reacts differently to the drug, so there are no 100% guarantees. Other factors such as certain medical conditions or other medications you may be taking may also affect the results you achieve when taking Viagra. You should also avoid taking the pill right after eating a high-fat pill or it will take much longer to work. Age can also have a bearing on how Viagra works, as men over 65 are more sensitive to the drug. That is why it is best to talk to your doctor beforehand so he/she can determine the appropriate dosage for your circumstances.