Seven of these companies are based in India. Viagra is also informally known as “vitamin V”, “the blue pill”, or “blue diamond”, as well as various other nicknames. History Sildenafil compound UK, was synthesized by a group of pharmaceutical chemists led by Simon Campbell [55] working at Pfizer’s Sandwich, Kent , research facility in England. The decision, Teva Canada Ltd. Neo-Viagra and other medicines – among them Kumdang, which when injected can purportedly cure MERS and avian flu – are not prescribed for domestic use but are used to earn foreign currency, said Kim Jung-ryong, a South Korean doctor who worked in the inter-Korean industrial park on the northern side of the border for seven years, until It affects the way the medicine works.In most males,* Viagra works within 1 hour after it’s taken. It’s possible that Viagra can begin working within 30 minutes of being taken. But other times, it may take up to 4 . Anabolic steroids are synthetic hormones that enhance muscle growth and increase male sex characteristics. They’re sometimes prescribed to help teen boys who have delayed . Sildenafil Sildenafil, sold under the brand name Viagra, among others, is a medication used to treat erectile dysfunction and pulmonary arterial hypertension. [4] [8] It is also .