What it’s for
- Studied for sexual-function symptoms
A preparation of maca root, promoted for libido, energy and wellbeing.
Purpose, evidence and practical considerations.
Small, varied trials provide limited evidence. They do not establish maca as a reliable testosterone, fertility or athletic-performance treatment.
Confidence: weak
Short trials generally report mild adverse effects, but pregnancy, long-term use, endocrine-sensitive conditions, and product contamination remain insufficiently studied.
Maca contains macamides and other plant constituents, but a clinically established human mechanism for libido, hormones, or energy has not been demonstrated.
Regulatory status: food or dietary supplement
The evidence on this page does not automatically apply to:
How people use it, with their schedules, context and original sources.
Ferriss associated it with reproductive health and a mild anabolic-like effect
These share a protocol with this intervention. This does not establish that they work together or are suitable alternatives.