Results. Sildenafil had no statistically significant effect on sperm motility, count or density; the percentage of abnormal sperm forms; or the percentage of living sperm. It also did not affect ejaculate volume or viscosity. All measures were within normal ranges.

Does Sildenafil citrate affect fertility?

Sildenafil does not alter semen parameters, and, in fact, may positively affect semen parameters. Sildenafil is helpful for treating ED caused by the psychological stress of infertility treatments. Sildenafil has improved the treatment of ED and may have a benefit on semen parameters.

Does sildenafil prevent pregnancy?

If you are taking sildenafil to treat erectile dysfunction, you should know that it does not cure erectile dysfunction or increase sexual desire. Sildenafil does not prevent pregnancy or the spread of sexually transmitted diseases such as human immunodeficiency virus (HIV).