Maca (Lepidium meyenii)
What it is
A Peruvian root vegetable traditionally used for energy and libido. A Shin 2010 systematic review (4 small RCTs, BMC Complement Altern Med) concluded evidence for improved sexual function is limited but suggestive; later small trials report modest libido and energy improvements with no consistent effect on testosterone. NCCIH considers it generally safe for short-term use. The gelatinised form is easier on the stomach. Allow 6–8 weeks.
Dose
1,500–3,000 mg/day gelatinised maca powder; allow 6–8 weeks for assessment
Time of day & tips
Take with water and a meal. The gelatinised form is easier on the stomach than raw powder. Morning is ideal. Allow 6–8 weeks before assessing results.
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