Pearlman says. You must obtain professional or specialist advice before taking, or refraining from, any action on the basis of the content on our site. The medication was developed by U. An OTC drug will help patients get treatment more quickly. M8 has taken up its right to extend the licensing agreement to a further 14 countries in the Central and South American region.The most famous drug ever discovered and developed by Pfizer, Viagra, was approved late last year in the U.K. for over-the-counter (OTC) sales. Known as VIAGRAconnect, this . Currently, there are no over the counter alternatives to Viagra available. Viagra (sildenafil) is a prescription medication, meaning it’s not available over the counter from your. The United Kingdom allows for over-the-counter (OTC) sales of the drug, in part to discourage the market for fake sildenafil. Sildenafil is one of the most counterfeited drugs .