Tribulus terrestris Extract Improves Human Sperm Parameters In Vitro.

Objective: The object of present study was to investigate the effects of direct addition of Tribulus terrestris extract on human sperm parameters.

Design: Semen specimens from 40 healthy men volunteers were divided into 4 groups: one group received no treatment (control group) while the others were incubated with 20, 40, and 50 µg/mL of T terrestris extract (experimental groups). Motility, viability, and DNA fragmentation were assessed in all groups.