Where did Viagra come from?

Viagra is a relatively new drug. Its primary ingredient Sildenafil was patented in 1996 in the USA. To treat erectile dysfunction, it was definitely approved two years later. As it was practically the first drug to help with erectile dysfunction taken orally, it quickly found its customers.

After several years, other medicines based on other active ingredients also appeared on the market. For example, Vardenafil and Tadalafil. Under the commercial label we can find them as Cialis or Levitra.

How does Viagra work and what to watch out for?

Viagra should be taken about an hour before sex. The onset of its effects is conditioned by sexual stimulation. Therefore, do not worry that you will have an inappropriate immediate erection. However, it is important that you do not exceed the prescribed dose. At the same time, you should not eat grapefruits or products from them before using Viagra. The active substance Sildenafil might not work properly.

Like most medicines, Viagra also has its side effects. Although they do not always have to show up, it is recommended to consult use of Viagra with the doctor first. You may be allergic to Sildenafil, which can be manifested by swelling of the face, tongue or even throat.

At the same time, your doctor can tell you whether or not you have any contraindications. This is particularly true of those men who have heart problems, blood pressure, or have had a heart attack or stroke in the past.

If you are looking for a cheaper, but equally effective Viagra, try Kamagra. This is a generic drug based on Viagra with the same active substance as the blue pill has.