When Was Viagra Invented?
Sildenafil, or Viagra, was introduced in 1998 for treatment of erectile dysfunction, and has since become the best-selling prescription drug of all time, and one of the most well-known brand names of drugs on the market. It was the first phosphodiesterase type 5 inhibitor (PDE5) created. PDE5 drugs are generally thought to be safe and effective. Viagra is a pill that should be taken about one hour before engaging in sexual activity. History Sildenafil was created by chemists working for Pfizer, at their facility in England. It was initially created to be used as a treatment for high blood pressure. During clinical trials, however, it was noted that the drug was very effective in inducing marked penile erections. Therefore, Pfizer quickly decided to market it as a drug to treat erectile dysfunction. Pfizer obtained a patent in 1996, and was approved by the Food and Drug Administration on March 27, 1998. It was the first oral treatment approved by the FDA for the purposes of treating ere