Study References

Zhonghua Nan Ke Xue. 2008 Apr;14(4):371-6.

Ginkgo biloba extract enhances testosterone synthesis of Leydig cells in type 2 diabetic rats.

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J Sex Med. 2010 Apr;7(4 Pt 1):1518-28. doi: 10.1111/j.1743-6109.2009.01699.x. Epub 2010 Feb 5.

Erectogenic and neurotrophic effects of icariin, a purified extract of horny goat weed (Epimediumspp.) in vitro and in vivo.

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Andrologia. 2017 Jun;49(5). doi: 10.1111/and.12655. Epub 2016 Jul 12.

Effect of oral administration of Tribulus terrestris extract on semen quality and body fat index of infertile men.

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