”Erectogenic and Neurotrophic Effects of Icariin, a Purified Extract of Horny Goat Weed (Epimedium spp.) In Vitro and In Vivo”
– Alan W. Shindel, MD,* Zhong-Chen Xin, MD,† Guiting Lin, MD, PhD,* Thomas M. Fandel, MD,* Yun-Ching Huang, MD,* Lia Banie, BS,* Benjamin N. Breyer, MD,* Maurice M. Garcia, MD,* Ching-Shwun Lin, PhD,* and Tom F. Lue, MD*
Journal of Sex Med. Author manuscript; available in PMC 2013 Jan 22. Published in final edited form as: J Sex Med. 2010 Apr; 7(4 Pt 1): 1518–1528. Published online 2010 Feb 5. doi: 10.1111/j.1743-6109.2009.01699.x . PMCID: PMC3551978. NIHMSID: NIHMS431902, PMID: 20141584

”A Review on Plants Used for Improvement of Sexual Performance and Virility”
– Nagendra Singh Chauhan,* Vikas Sharma, V. K. Dixit, and Mayank Thakur*
Biomed Research International. 2014; 2014: 868062. Published online 2014 Aug 18. doi: 10.1155/2014/868062; PMCID: PMC4151601. PMID: 25215296

”Exploring scientifically proven herbal aphrodisiacs”
– Sabna Kotta, Shahid H. Ansari, and Javed Ali
Pharmacognosy Review. 2013 Jan-Jun; 7(13): 1–10. doi: 10.4103/0973-7847.112832; PMCID: PMC3731873. PMID: 23922450

”Does regular consumption of green tea influence expression of vascular endothelial growth factor and its receptor in aged rat erectile tissue? Possible implications for vasculogenic erectile dysfunction progression”
– D. Neves,corresponding author, M. Assunção, F. Marques, J. P. Andrade, and H. Almeida
Age (Dordr). 2008 Dec; 30(4): 217–228. Published online 2008 Apr 18. doi: 10.1007/s11357-008-9051-6. PMCID: PMC2585648. PMID: 19424845

”Inflammatory pathway employed by Red Maca to treat induced benign prostatic hyperplasia in rats”
– Cinthya Vásquez-Velásquez, Manuel Gasco, Diego Fano-Sizgorich, Gustavo F Gonzales
Andrologia. 2020 Apr;52(3):e13516. doi: 10.1111/and.13516. Epub 2020 Jan 28. PMID: 31989657 DOI: 10.1111/and.13516

”Does Lepidium meyenii (Maca) improve seminal quality?”
– Ana María Alcalde, Jordi Rabasa
Randomized Controlled Trial Andrologia. 2020 Nov;52(10):e13755. doi: 10.1111/and.13755. Epub 2020 Jul 12.

”Maca (L. meyenii) for improving sexual function: a systematic review”
– Byung-Cheul Shin, Myeong Soo Lee, Eun Jin Yang, Hyun-Suk Lim, Edzard Ernst
Review BMC Complement Alternative Medicine. 2010 Aug 6;10:44. PMID: 20691074 PMCID: PMC2928177 DOI: 10.1186/1472-6882-10-44

”A Double‐Blind, Randomized, Pilot Dose‐Finding Study of Maca Root (L. Meyenii) for the Management of SSRI‐Induced Sexual Dysfunction”
– Christina M. Dording, Lauren Fisher, George Papakostas, Amy Farabaugh, Shamsah Sonawalla, Maurizio Fava, and David Mischoulon
CNS Neurosci Ther. 2008 Fall; 14(3): 182–191. Published online 2008 Aug 13. doi: 10.1111/j.1755-5949.2008.00052.x; PMCID: PMC6494062. PMID: 18801111

”Potent Inhibition of Human Phosphodiesterase-5 by Icariin Derivatives”
– Mario Dell’Agli*†, Germana V. Galli†, Esther Dal Cero†, Federica Belluti‡, Riccardo Matera§, Elisa Zironi§, Giampiero Pagliuca§, and Enrica Bosisio†
Journal of Natural Products 2008, 71, 9, 1513–1517; Publication Date:September 9, 2008

”Effect of standardized root extract of ashwagandha (Withania somnifera) on well‐being and sexual performance in adult males: A randomized controlled trial”
– Sanjaya Chauhan,corresponding author Manoj K. Srivastava, and Anklesh K. Pathak
Health Science Reports. 2022 Jul; 5(4): e741. Published online 2022 Jul 20. doi: 10.1002/hsr2.741; PMCID: PMC9297375; PMID: 35873404

“The genus Epimedium: an ethnopharmacological and phytochemical review”
– Huiping Ma 1Xirui HeYan YangMaoxing LiDingjun HaoZhengping Jia
Journal of ethnopharmacology.
2011 Apr 12;134(3):519-41. doi: 10.1016/j.jep.2011.01.001. Epub 2011 Jan 5.

“Sexual Enhancement Products for Sale Online: Raising Awareness of the Psychoactive Effects of Yohimbine, Maca, Horny Goat Weed, and Ginkgo biloba”
– Ornella Corazza, Giovanni Martinotti, Rita Santacroce, Eleonora Chillemi, Massimo Di Giannantonio, Fabrizio Schifano, and Selim Cellek
BioMed Research International 2014: 841798. Published online 2014 Jun 15. doi: 10.1155/2014/841798

“Clinical Evaluation of the Spermatogenic Activity of the Root Extract of Ashwagandha (Withania somnifera) in Oligospermic Males: A Pilot Study”
– Vijay R AmbiyeDeepak LangadeSwati DongrePradnya AptikarMadhura KulkarniAtul Dongre
Evidence-based complementary and alternative medicine. 2013:2013:571420. doi: 10.1155/2013/571420. Epub 2013 Nov 28.

“Male sexual dysfunction: A review of literature on its pathological mechanisms, potential risk factors, and herbal drug intervention”
– Lei ChenGuang-Rui ShiDan-Dan HuangYang LiChen-Chao MaMin ShiBin-Xiao SuGuang-Jiang Shi
Biomedicine and Pharmacotherapy. 2019 Apr:112:108585. doi: 10.1016/j.biopha.2019.01.046. Epub 2019 Feb 21.

“Dietary Supplements for Erectile Dysfunction: Analysis of Marketed Products, Systematic Review, Meta-Analysis and Rational Use”
– Gabriel Cosmin PetreFrancesco Francini-PesentiAmerigo VitaglianoGiuseppe GrandeAlberto FerlinAndrea Garolla
Nutrients. 2023 Aug 22;15(17):3677. doi: 10.3390/nu15173677.

“The use of maca (Lepidium meyenii) to improve semen quality: A systematic review”
– Myeong Soo LeeHye Won LeeSooseong YouKi-Tae Ha
Mauritas. 2016 Oct:92:64-69. doi: 10.1016/j.maturitas.2016.07.013. Epub 2016 Jul 21.

“Beneficial effects of maca (Lepidium meyenii) extract-containing diet on sexual dysfunction, particularly erectile dysfunction (ED), and related health conditions in middle-aged and older men with mild to moderate ED”
– Ito M, Morii H, Kosaka T, Shizume M
Japanese pharmacology and therapeutics, 2019, 47(9), 1483‐1495 added to CENTRAL: 31 December 2019 | 2019 Issue 12

“Green tea consumption increases sperm concentration and viability in male rats and is safe for reproductive, liver and kidney health”
– Chinyerum Opuwari & Thomas Monsees
Scientific Reports 10, 15269 (2020).