Viagra is a drug to help men with "erectile dysfunction" achieve an erection so they can have sex. It is most helpful to men who may have medical conditions such as diabetes or high blood pressure. Sometimes drugs prescribed by doctors for these and other conditions may also cause the erectile dysfunction and Viagra my help in this situation. Many people think that Viagra increases blood pressure, and this is not right. The drug causes a chemical reaction in the brain and it increases blood flow to certain parts of the body.
