Fildena Professional (sildenafil) is not known to reduce male fertility when used as directed. Sildenafil treats erectile dysfunction; it doesn't act as contraception and doesn't normally lower sperm production. Some research has even explored possible effects of sildenafil on sperm movement, but the evidence isn't strong enough to use it as a fertility treatment. If you're trying to conceive, occasional prescribed sildenafil is Fildena Professional not considered a fertility problem. However, the underlying cause of erectile dysfunction can sometimes be associated with conditions that affect fertility. If you tell me whether you're actively trying for a baby and how often you use Fildena Professional, I can explain what is known about sildenafil and sperm quality.