Subjective effects of Lepidium meyenii (Maca) extract on well-being and sexual performances in patients with mild erectile dysfunction: a randomised, double-blind clinical trial
Zenico T, Cicero AF, Valmorri L, Mercuriali M, Bercovich E
Published in Andrologia, Vol. 41 (2), pp. 95-9
Methodology
Randomised, double-blind, placebo-controlled trial in 50 Caucasian men with mild erectile dysfunction given maca dry extract 2,400 mg a day or placebo for 12 weeks. Outcomes: IIEF-5 erectile function score and the Satisfaction Profile (SAT-P) well-being questionnaire, before and after treatment.
Key Findings
IIEF-5 rose significantly in both groups (P < 0.05 for both), more on maca (1.6 ± 1.1 vs 0.5 ± 0.6 points, P < 0.001). Psychological SAT-P improved more on maca (+9 ± 6 vs +6 ± 5, P < 0.05); only the maca group improved on physical and social SAT-P scores versus baseline.
Conclusions
The authors reported a small but significant effect of maca on subjective general and sexual well-being in men with mild ED.
Limitations
Small (n = 50), mild ED only, self-reported outcomes, a large placebo response, and no independent replication in men with ED.
Supplements Studied
patients taking Maca experienced a more significant increase than those taking placebo
Outcomes Measured
1.6 +/- 1.1 versus 0.5 +/- 0.6, P < 0.001
Related Health Concerns
Study Details
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