- Viagra — 2017-06-01 14:56:53
… class were useful in treating heart problems such as angina. Nicholas Terrett was named in the 1991 British patent for Sildenafil (tradenamed Viagra) as a heart medicine. === Terrett 1994 === {{image url="Viagra.jpg" title="Viagra pills" class="lef…
…t" width="200" }} Terrett was conducting a study on Sildenafil as a heart medicine when it was discovered that it caused increased blood to flow to the penis as a side effect. Actual…
…ared on an application by Pfizer to patent (WOWO9849166A1) the manufacturing process of Viagra or its [[Medical]] name, Sildenafil Citrate.…