Rivaridge had success with Maca and L-Arginine:
viewtopic.php?t=220&highlight=maca
J89 didn’t:
viewtopic.php?t=97&highlight=maca
Maca (Lepidium meyenii) is an adrenal adaptogen and stimulant, similar to ginseng, that is a root-based food product consumed on a daily basis in some South American countries (thus should be safe/non-toxic). Maca comes from the Andes in Peru, is purported to have energy, libido and fertility enhancing properties, and may lower cortisol.
There are 3 extracts of Maca – yellow, red, and black. However, there is also literature that says certain extracts (Red Maca) can affect the prostate, ie shrink it – which is what Finasteride did – which might mean affecting erectile function. It may also potentially have slight, though likely inconsequential, estrogenic effects.
It would appear that YELLOW Maca is the one to take – it increased T levels in rats, and did not shrink prostate in rats hardly at all, unlike Red maca.
Here are some reports that highlight Maca’s effects:
Libido boosting effects:
A pilot investigation into the effect of maca supplementation on physical activity and sexual desire in sportsmen
sciencedirect.com/science?_o … a56490d657
MACA: FROM TRADITIONAL FOOD CROP TO ENERGY AND LIBIDO STIMULANT
sciweb.nybg.org/science2/pdfs/mb … r_2002.pdf
EFFECT OF A LIPIDIC EXTRACT FROM Lepidium meyenii ON SEXUAL BEHAVIOR IN MICE AND RATS
cmp.org.pe/comites/cmtac/doc … logy00.pdf
Lepidium meyenii Walp. improves sexual behaviour in male rats independently from its action on spontaneous locomotor activity
sciencedirect.com/science?_o … cbd4ac247e
Acute and Chronic Dosing of Lepidium meyenii (Maca) on Male Rat Sexual Behavior
blackwell-synergy.com/doi/ab … 07.00437.x
Prostate shrinking effects of RED MACA:
Red maca (Lepidium meyenii) reduced prostate size in rats
rbej.com/content/3/1/5
Effect of two different extracts of red maca in male rats with testosterone-induced prostatic hyperplasia
blackwell-synergy.com/doi/ab … 07.00228.x
Dose–response effect of Red Maca (Lepidium meyenii) on benign prostatic hyperplasia induced by testosterone enanthate
sciencedirect.com/science?_o … 828c2bf6dc
Hormonal effects:
Lowered Cortisol – Short and Long-Term Physiological Responses of Male and Female Rats to Two Dietary levels of Pre-Gelatinized Maca (Lepidium Peruvianum Chacon)
ijbs.org/User/ContentFullTex … artPage=15
No effect on hormones in men – Effect of Lepidium meyenii (Maca), a root with aphrodisiac and fertility-enhancing properties, on serum reproductive hormone levels in adult healthy men
joe.endocrinology-journals.org/c … /176/1/163
Fertility enhancing effects:
Lepidium meyenii (Maca) improved semen parameters in adult men
asiaandro.com/1008-682X/3/301.htm
Effect of short-term and long-term treatments with three ecotypes of Lepidium meyenii (MACA) on spermatogenesis in rats
sciencedirect.com/science?_o … a38535494c
Effect of chronic treatment with three varieties of Lepidium meyenii (Maca) on reproductive parameters and DNA quantification in adult male rats.
pt.wkhealth.com/pt/re/andr/abstr … 28!8091!-1
Lepidium meyenii (Maca) reversed the lead acetate induced—Damage on reproductive function in male rats
sciencedirect.com/science?_o … b1a61fa90e
Dose–response effects of Lepidium meyenii (Maca) aqueous extract on testicular function and weight of different organs in adult rats
sciencedirect.com/science?_o … 5f56010cb2
Effect of Black maca (Lepidium meyenii) on one spermatogenic cycle in rats
blackwell-synergy.com/doi/ab … 06.00733.x
Potential estrogenic effects:
The in vitro biological activity of Lepidium meyenii extracts
springerlink.com/content/p02nt65307x3m137/
Misc effects:
Lepidium meyenii (Maca) does not exert direct androgenic activities
sciencedirect.com/science?_o … eb083a4296
Effect of three different cultivars of Lepidium meyenii (Maca) on learning and depression in ovariectomized mice
pubmedcentral.nih.gov/articl … id=1534053
The Influence of Maca ( Lepidium meyenii ) on Antioxidant Status, Lipid and Glucose Metabolism in Rat
springerlink.com/content/t216811632567x40/