The medication sildenafil citrate, which is the basis of Fildena 50, has been given the go-ahead by regulatory bodies to treat male impotence. Because of the way it functions, Fildena is a widely used generic substitute for the well-known drug Viagra. We have it in three different strengths: 100 mg, 50 mg, and 25 mg at our online pharmacy. It makes it easier for the males to make love for extended periods of time.