https://www.selleckchem.com/pr....oducts/pf-03084014-p
Also, some evidence exists for another herb and herbal extract, Asian red ginseng and forskohlii root extract. Overall, 9 out of 32 studies demonstrated statistically significant increases in testosterone concentrations. Moreover, 6 studies out of 32 were judged as having a low risk of bias. Current evidence is largely based on young, nonclinical populations, with 16 out of 32 studies using men less then 40 y of age. Conclusions are moderated by the paucity of research for many herbs, the variation in dosages and extracts