What Is Maca?
Maca (Lepidium meyenii) is a root vegetable native to the Peruvian Andes, traditionally used for energy, stamina, and libido. It is often sold as a powder or in capsules, and comes in different colours (yellow, red, black)—some sellers claim different colours have different effects, though evidence for that is limited. Maca is sometimes grouped with adaptogens, though it is not as well studied as rhodiola or ashwagandha. Research on maca and physical energy or exercise performance is limited and mixed; some studies suggest improved mood or subjective energy, while effects on measurable endurance or strength are less clear. Most human trials use gelatinised or extracted maca (which may be easier to digest) for several weeks.
Evidence for Energy and Stamina
Small studies have looked at maca for cycling performance, mood, and sexual function. Results are inconsistent: some show modest improvements in subjective energy or libido, others no significant effect. There is little strong evidence that maca directly boosts athletic performance or VO2max. If people feel better or more energised on maca, it may be due to placebo, better overall habits, or subtle effects on mood and stress—not a proven ergogenic effect. Athletes should not rely on maca as a replacement for evidence-based strategies (sleep, nutrition, training, caffeine where appropriate).
Forms: Gelatinized vs Raw and Dosing
Maca is available as raw powder, gelatinised (heated to reduce starch and possibly improve digestibility), or as extracts. Gelatinised maca is often recommended to avoid digestive upset. Doses in studies vary from about 1.5 g to 3 g or more per day, often taken in the morning. Duration in trials is often 4–12 weeks. Quality and standardisation vary; choose products from reputable brands. You can compare maca products on iHerb.
Safety and Considerations
Maca is usually well tolerated. Rare side effects include digestive upset or restlessness. Because of its traditional use for libido and fertility, pregnant and breastfeeding women are often advised to avoid maca or use it only after consulting a healthcare provider. There is no standardised maca extract like there is for some other herbs, so stick to typical food-like doses (e.g. 1–3 g powder daily) unless a product is clearly standardised and recommended by a professional. Do not expect maca to replace sleep, good nutrition, or proven performance strategies.
Summary
Maca is a Peruvian root used for energy, stamina, and libido; evidence for direct performance enhancement is limited. Some subjective energy or mood benefits are possible; measurable athletic effects are not well established. Dosing is often 1.5–3 g daily (gelatinised may be gentler); use for several weeks; quality varies. Generally well tolerated; caution with hormone-sensitive conditions, pregnancy, breastfeeding. Use quality products and realistic expectations, and prioritise sleep, nutrition, and training.
Evidence and Practical Tips
Research on supplements and diet continues to evolve. Most studies focus on specific doses, forms, and populations, so results are not always generalisable. Quality matters: choose products from reputable brands that disclose ingredients, standardisation where applicable, and dose per serving. Third-party testing (e.g. USP, NSF, ConsumerLab) when available adds assurance. Start with the lowest effective dose on the label and give any new supplement at least four to six weeks of consistent use before judging effect. Many factors influence how well a supplement works: your baseline status, diet, sleep, other medications, and lifestyle. Keeping a simple log of what you take and how you feel can help you and your provider decide whether to continue or adjust.
Supplements are not a substitute for a varied diet, adequate sleep, and regular physical activity. If you are pregnant, breastfeeding, or have a chronic condition, talk to your doctor before starting any new supplement. Children and older adults may need different doses; professional guidance ensures safety and appropriateness. Do not use supplements to replace diagnosis or treatment for medical or mental health conditions. When in doubt, a short conversation with a doctor, dietitian, or qualified practitioner can clarify whether a supplement is right for you and how to use it safely. Store supplements in a cool, dry place away from direct sunlight and keep them out of reach of children. Check the expiry date and discard any product that has changed in colour, smell, or texture.
Individual response to supplements varies. Some people notice benefits within a few weeks; others need longer or may not notice a clear effect. Genetics, diet, stress, and medication use all play a role. If you take multiple supplements, be aware of possible interactions and avoid exceeding upper limits for vitamins and minerals. Reading labels and staying within recommended doses is essential. When combining herbs or new ingredients, introduce one at a time so you can identify any adverse reactions. A balanced approach—sleep, nutrition, movement, and stress management—remains the foundation; supplements can support but not replace these habits. In summary, informed choices about supplements support your health goals when combined with lifestyle and professional advice. Give new supplements time to show effect; consistency and patience often matter more than quick fixes.
