Herb Profile
Maca Lepidium Meyenii
Maca (Lepidium meyenii) is traditionally used for energy and libido support, with early evidence exploring effects on mood and hormonal balance through its macamide and glucosinolate compounds.
Last reviewed: •7 human studies cited
B ModerateUse extra caution — Generally well tolerated; GI upset possible Details
- Evidence
- Moderate Human Evidence
- Typical onset
- Varies by prep
- Safety rating
- Moderate caution
- Best for
- Energy, Hormonal, Reproductive, Stress resilience
- Avoid / review if
- Hormone Sensitive Conditions (Unclear Relevance), None Well Established
Monograph visual
Maca Lepidium Meyenii
The Hippie Scientist illustration
Where to go next — guides & comparisons
Continue reading
- If you want to browse more herbs → All herbs
Safety & Cautions
Generally well tolerated; GI upset possible
60%
Moderate caution — review before use
Detailed safety fields
Pregnancy, breastfeeding, and contraindications
- - Hormone Sensitive Conditions (Unclear Relevance)
- - None Well Established
Safety classifications
- - Hormonal Activity Context: Hormone-adjacent wording is present and should be interpreted carefully.
Full safety note
- - Generally well tolerated; GI upset possible
Safety labels
- - Hormonal Activity Context
Evidence Summary
Evidence lens
Useful signal, but study design, dose, and population still matter.
ModerateModerate Human Evidence
Human clinical evidence: Present in source signals
Mechanistic / preclinical: Mechanism mapped — Hormonal Signaling Context · Stress Response Modulation
Research maturity: Preliminary or mixed — Long Term Human Evidence May Be Limited.
Safety boundary: Safety note available — Generally well tolerated; GI upset possible
This profile cites 7 human studies.
How evidence grades work
Each grade reflects the strength and consistency of published human evidence — not marketing claims. Grades are based on study count, design quality, effect size, consistency, and recency.
A
Strong
Multiple RCTs, consistent direction, adequate effect size
B
Moderate
Some RCTs or consistent observational data in humans
C
Preliminary / Mixed
Animal or in-vitro only, or conflicting human data
D
Traditional / Theoretical
Traditional use only; no controlled human trials
Clinical Study Summaries (5)Cited studies informing this profile. RCTs and reviews shown first.
| Study | Type | Sample | Source |
|---|---|---|---|
Medicinal effects of Peruvian maca (Lepidium meyenii): a review da Silva Leitão Peres N et al. (2020) | — | — | PubMed → |
Ulloa Del Carpio N et al. (2024) | — | — | PubMed → |
Not All Maca Is Created Equal: A Review of Colors, Nutrition, Phytochemicals, and Clinical Uses Minich DM et al. (2024) | — | — | PubMed → |
Requires manual source normalization to PMID, DOI, PMC, or authoritative URL. | — | — | — |
PubMed | — | — | PubMed → |
Dosing & Timing
Dose guidance
Gelatinized powder: 1.5 3 g/day; extracts vary; limited standardization
How Maca Lepidium Meyenii Works
Simplified mechanism pathway based on preclinical and pharmacological evidence. Does not confirm clinical efficacy.
Mechanism Pathway — How Maca Lepidium Meyenii Works
CompoundTarget / ReceptorMechanismEffect / Outcome
Mechanisms & Biological Pathways
Preclinical pathways
Proposed mechanisms from in vitro and animal research; these do not confirm clinical outcomes in humans.
Hormonal Signaling ContextStress Response Modulation
Active Compounds
Key constituents studied in Maca Lepidium Meyenii, with full pharmacology and safety profiles.
Condition guides
Compare & Sourcing
Compare side-by-side tradeoffs or verify active marker guidelines.
Review available sources for Maca Lepidium Meyenii
Independent database mapping — evaluated separately from safety and efficacy scores.
Affiliate Disclosure: Shopping links may earn this site a commission at no cost to you. Links are chosen on quality and availability, never commission tiers; safety warnings and evidence ratings stay independent.
Affiliate-ready sourcing
Maca product picks
Affiliate recommendations for Maca Lepidium Meyenii. Review safety, dose, and product quality before buying.
Affiliate disclosure: we may earn a commission from qualifying links at no extra cost to you. How we stay independent.
Product Form & Quality Guidelines
When sourcing Maca Lepidium Meyenii, verify the label for:
- Standardized Extract: Confirm active content percentages on the supplement facts panel (e.g. standardized to specific marker compounds) rather than simple raw herb weights.
- Third-Party Testing: Look for independent purity labels (USP, NSF, ConsumerLab, or Eurofins) to ensure the product is free from heavy metals, solvents, and contaminants.
- Form Bioavailability: Ensure the form matches evidence-supported configurations (e.g. standardized active extracts like bacosides, withanolides, or curcuminoids) for optimal onset and digestion tolerance.
Supplement stacking
Stack Maca Lepidium Meyenii With
Commonly paired with Maca Lepidium Meyenii. Review interactions and dosage before combining.
Affiliate disclosure: we may earn a commission from qualifying links at no extra cost to you. How we stay independent.
Safety first · Harm reduction
This information is educational and not medical advice. Start low, avoid risky combinations, and consult a licensed clinician before making health decisions—especially if you use medications, have diagnosed conditions, or are pregnant/breastfeeding.
Learn how we evaluate confidence, safety, and intensity on the methodology page.
Editorial Review
Checked against primary sources, cited evidence, and contraindication language before publication. Evidence claims, safety language, and affiliate modules are reviewed independently. Not personal medical advice.
Free safety checklist
Get the Maca Lepidium Meyenii research notes
Evidence summaries, dosing context, and safety updates for this herb — straight to your inbox.
We use your email to send the checklist and occasional evidence-first supplement updates. Unsubscribe anytime. Privacy policy.
Botanical profile context
How to interpret Maca Lepidium Meyenii
Maca dosage ranges, effects, drug interactions, and harm-reduction safety guide for energy. Moderate Human Evidence research evidence. Use this herb profile as a starting point for evidence review, not as a recommendation to start a new supplement. Botanical products can vary by plant part, extract ratio, standardization, dose, and contaminant testing, so two labels with the same common name may not behave the same way.
When reviewing Maca Lepidium Meyenii, compare the traditional-use context against the human evidence, mechanism notes, and safety cautions. Pay special attention to pregnancy, breastfeeding, liver or kidney disease, blood-pressure effects, sedation, stimulation, anticoagulant use, antidepressants, and any prescription medication overlap.
For product decisions, prefer transparent labels, named extracts, clear serving sizes, and third-party quality testing. Avoid treating a long list of possible mechanisms as proof that an herb will solve a specific condition.