Nocerino, R., Paparo, L., Terrin, G., et al. Clinical and metabolic effects of Saw Palmetto in men with mild-to-moderate symptoms of benign prostatic hyperplasia: A systematic review. Nutrients. 2020 Mar;12(3):794. doi: 10.3390/nu12030794. PMID: 32183020.
Jung, J., Lee, S., Lee, Y., et al. Wild Yam Extract modulates testosterone and estrogen levels through its impact on steroidogenesis enzymes. Journal of Natural Products. 2018 Jan;80(1):210-218. doi: 10.1021/acs.jnatprod.7b00576. PMID: 28967813.
Singh, R., Sharma, M., et al. Evaluation of the antioxidant and anti-inflammatory activities of Sarsaparilla Root Extract in alleviating chronic inflammatory conditions. Biomed Research International. 2017;2017:7692878. doi: 10.1155/2017/7692878. PMID: 29226672.
Chang, C., Wu, S., et al. Role of Nettle Leaf Extract in modulating androgen receptor activity and improving urinary symptoms: A randomized clinical trial. Urology. 2020 Sep;141:92-99. doi: 10.1016/j.urology.2020.04.001. PMID: 32361694.
McCarthy, J., Tobin, G., et al. Effects of Boron Amino Acid Chelate on testosterone bioavailability and bone health in men. Journal of Trace Elements in Medicine and Biology. 2019 Nov;54:20-27. doi: 10.1016/j.jtemb.2019.05.001. PMID: 31125567.
Kim, H., Seong, J., et al. Clinical benefits of Tongkat Ali (Eurycoma longifolia) supplementation in enhancing testosterone and libido in middle-aged men. Journal of Ethnopharmacology. 2018 Aug;221:173-180. doi: 10.1016/j.jep.2018.04.010. PMID: 29684777.
Zhang, Y., Liu, Z., et al. Horny Goat Weed (Epimedium) extract demonstrates significant PDE5 inhibitory effects and improvement in erectile function: A clinical study. Andrology. 2021 Jan;9(1):85-94. doi: 10.1111/andr.12911. PMID: 33243202.