Tadagra 20 mg is generally understood to contain tadalafil, a PDE5 inhibitor used to treat erectile dysfunction. Current evidence does not show that tadalafil consistently harms sperm production, but the relationship between tadalafil and male fertility is somewhat complex.

Clinical studies found that taking tadalafil 20 mg daily for six months did not significantly affect sperm concentration, total sperm count, sperm motility, sperm morphology, or reproductive hormones in the studied men. A longer nine-month study also found no clinically significant harmful effect on spermatogenesis.

However, prescribing information notes that some tadalafil studies observed reductions in sperm concentration, while another Tadagra 20 mg study did not. The clinical significance of these findings remains uncertain, and tadalafil has not been definitively established as either improving or impairing male fertility.

Some research examining a single 20 mg dose found no meaningful adverse changes in semen parameters, although individual studies have reported temporary differences in sperm motility.

In summary: Tadagra 20 mg is not known to substantially reduce sperm production in most men, but men actively trying to conceive should discuss regular tadalafil use with a doctor, particularly if they already have abnormal semen results or fertility concerns.