What is Fildena 100 Purple pill?   Fildena 100 Purple Pill, also known as the "weekend pill," contains 100 milligrams of sildenafil citrate and is used to increase blood flow to certain areas of the body, and also helps treat erectile problems in older men between the ages of 18 and 70. Because this is the same active ingredient as Viagra, the drug is also known as generic Viagra, but...