The 30-Second Version
- Maca (Lepidium meyenii) is a high-Andes root used for over 2,000 years for energy, fertility, and libido support.
- Its key bioactives — macamides, glucosinolates, and macaridine — are found nowhere else in the plant kingdom.
- Clinical trials support benefits for libido and sexual function in men and women — through non-hormonal mechanisms.
- Gelatinized maca (starch removed) is better tolerated and concentrates the bioactives; studied doses run 1.5–3.5 g/day.
Maca (Lepidium meyenii) is a root vegetable native to the high-altitude plateaus of the Peruvian Andes, cultivated for over 2,000 years as both food and traditional medicine. Long prized in Andean cultures for its effects on energy, fertility, and libido, maca has now accumulated a growing body of clinical research that is beginning to clarify its mechanisms and the populations most likely to benefit.
What Is Maca (Lepidium meyenii)?
Maca grows at elevations of 4,000–4,500 meters in the Peruvian Andes — one of the world's most extreme growing environments. The hypocotyl (the swollen root) comes in several color varieties including yellow, red, and black, each with a somewhat different phytochemical profile. Maca is not a hormone — it contains no plant steroids or phytoestrogens. Its effects appear to operate through its unique amino acid, alkaloid, and glucosinolate content rather than direct hormonal action.
Key Bioactive Compounds in Maca
🧪 Macamides
Unique fatty acid amides found exclusively in maca. Research suggests macamides may inhibit fatty acid amide hydrolase (FAAH) — the enzyme that breaks down endocannabinoids like anandamide — potentially contributing to mood and libido effects through the endocannabinoid system. Macamides are most concentrated in gelatinized or extract forms.
🌿 Glucosinolates
Sulfur-containing plant compounds (glucotropaeolin, benzyl glucosinolate) that may contribute to maca's adaptogenic and energy-supporting properties.
🧬 Macaridine
An alkaloid unique to maca, studied in preclinical research for potential effects on the central nervous system and fertility parameters.
🌾 Amino Acids & Minerals
Maca is a meaningful source of essential amino acids — unusual for a root vegetable — and is rich in iron, calcium, potassium, and zinc.
What the Research Says
- Libido and sexual function: A double-blind randomized trial published in CNS Neuroscience & Therapeutics found that maca (3 g/day for 12 weeks) significantly improved self-reported sexual function scores compared to placebo. A meta-analysis in BMC Complementary and Alternative Medicine found statistically significant improvements in sexual desire in both men and women across multiple trials. Importantly, maca's effects on libido in these trials were independent of changes in testosterone or estrogen — suggesting a non-hormonal mechanism.
- Fertility: Studies in men have found maca supplementation associated with improved sperm concentration and motility at 4 months, possibly via antioxidant support and mitochondrial function.
- Menopause support: Several small trials suggest maca may support a reduction in vasomotor symptoms (hot flashes, night sweats) in peri- and post-menopausal women, again through non-estrogenic mechanisms — making it a non-hormonal option for menopause support.
- Energy and mood: Subjective improvements in energy, mood, and endurance are frequently reported in maca trials, though separating true physiological effects from expectation is challenging in self-report studies.
How to Use
| Preferred Form | Gelatinized maca — starch removed for digestive tolerance, bioactives concentrated |
| Studied Dose | 1.5–3.5 g/day in clinical studies |
| Timing | Taken daily; effects on libido and energy typically reported after 4–8 weeks of consistent use |
| Tolerability | Generally well tolerated with few reported adverse effects |
Why Professional-Grade Sourcing Matters
Quality varies enormously in maca: gelatinization, standardization for macamide content, and heavy-metal testing (relevant for any root crop grown in mineral-rich Andean soils) separate a serious product from generic powder. At Advance Physician Formulas, every formula is manufactured at a triple-certified facility (UL · NSF · SQF) and third-party verified for identity, potency, and purity. Explore APF's Performance & Vitality collection to see what's currently in the lineup.
These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease. Individual results may vary. Always consult your healthcare provider before starting any new supplement.
