A well-liked libido and energy root — it improves sexual desire without raising testosterone.
Maca (Lepidium meyenii) is a Peruvian root eaten for centuries as a food and tonic. In men it's used mainly for libido, energy and mood, and possibly sperm quality. Importantly, it works through pathways other than testosterone — it's a 'feel-better and want-more' supplement rather than a hormone lever.
No, and the research is unusually clear on this. In a 12-week randomised trial, men taking 1.5 or 3 g/day reported improved sexual desire from week 8 — but their testosterone and oestradiol did not change versus placebo. Other trials echo this: better libido and rising sperm trends, with hormones essentially unchanged. So maca earns its place for desire and well-being, not for moving your numbers.
Men who want a lift in libido, energy or mood, or who are working on sperm quality — including those whose low desire is tied to stress or antidepressants. Black maca appears best for sperm specifically.
The studied range is 1.5–3 g/day of dried root, commonly as 'gelatinised' maca (lightly cooked for easier digestion). There's no formal upper limit; it's a food with a strong safety record and no serious adverse events reported in trials.
Take it daily, any time, with or without food. Allow about 8 weeks, since that's when the libido benefit showed up in studies. Powder stirred into food or a smoothie works as well as capsules.
Maca is very well tolerated. A few people notice mild digestive upset or feeling slightly wired if they take a lot late in the day — easily fixed by lowering the dose or taking it earlier.
For sexual function it pairs naturally with L-citrulline (blood flow), and it sits comfortably on top of the core zinc, magnesium and vitamin D foundation.
There are no well-established harmful drug interactions. Maca may modestly lower blood pressure, so take note if yours already runs low or you take blood-pressure medication.
People with hormone-sensitive conditions should be cautious as a general precaution, and anyone with thyroid concerns should know raw maca contains goitrogens (cooking or gelatinising reduces these). Otherwise it's low-risk for most men.
Choose gelatinised maca for easier digestion, and a product that states the maca colour (black for sperm; red and yellow more general). Prefer Peruvian-sourced, third-party-tested powder or capsules over vague 'maca blend' products.
Maca is a safe, well-liked root that reliably supports libido, energy and sperm — but not testosterone. Use 1.5–3 g/day of gelatinised maca (black for sperm), give it about 8 weeks, and value it for desire and well-being rather than hormone numbers.
Gonzales et al., Andrologia (2002); Zenico et al., Andrologia (2009, mild ED); randomised semen-parameter pilot (2015); Examine.com — Maca.
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Based on guidance from the NHS, NICE, Cleveland Clinic and peer-reviewed research.
General information, not a substitute for personal medical advice — always consult your doctor or a qualified health professional before making health decisions. If you are pregnant, breastfeeding, trying to conceive, under 18, or taking medication, speak to your doctor before starting any supplement.