Maca Dosage: How Much to Take (Evidence-Based)

Maca Dosage: How Much to Take

Maca (Lepidium meyenii) is a root vegetable from the high Andes of Peru and Bolivia. It has been used as food and medicine in the Andean region for thousands of years. Modern supplement use centres on its purported benefits for energy, libido, fertility, and mood. Clinical research on maca is still developing, but several well-designed trials provide useful dosing guidance.

Studied Effective Dose Ranges

The most commonly studied doses in clinical trials range from 1.5 g to 3.5 g of dried maca root powder per day. A systematic review of randomised controlled trials found evidence suggesting that maca may have a positive effect on sexual dysfunction or sexual desire in healthy subjects and patients on antidepressants (Shin et al., 2010).

For sexual health outcomes, trials have predominantly used 1.5–3 g/day of maca. Improvements in libido in healthy adult men were observed in a small double-blind trial using 1.5 g and 3 g/day over eight weeks (Gonzales et al., 2002).

For mood and menopausal symptoms, studies have used similar dose ranges (2–3 g/day) over periods of six to twelve weeks.

Dose by Goal

• Libido and sexual function: 1.5–3 g/day of dried maca powder, taken consistently for six to twelve weeks
• Energy and endurance: Similar dose range, though evidence is weaker and largely from small trials
• Menopausal symptom support: 2–3 g/day; some trials report modest improvements in psychological symptoms
• Fertility support (men): 1.5–3 g/day over three to four months has been studied; effects on sperm parameters were modest in small trials

Note: Most commercial maca capsules contain 500 mg per capsule. A three-capsule dose provides 1.5 g; a six-capsule dose provides 3 g.

Upper Limits and Safety

No formal tolerable upper intake level has been established for maca by regulatory bodies, reflecting the limited long-term data available. Maca has been consumed as a staple food in high-altitude Andean populations for generations at much higher intakes than typical supplement doses, suggesting a favourable safety profile at moderate amounts.

Short-term trials up to twelve weeks have generally not reported serious adverse effects. The most commonly reported complaints are mild gastrointestinal symptoms (bloating, altered stool consistency) in some individuals.

Maca contains glucosinolates — compounds also found in cruciferous vegetables. Very high intakes of glucosinolate-rich foods may theoretically affect thyroid function in susceptible individuals, though this has not been demonstrated at typical supplement doses.

Timing Relative to Dose

There is no strong clinical evidence favouring a specific time of day for maca. Most trials do not specify timing constraints. Taking maca with a meal is generally recommended to reduce the chance of gastrointestinal discomfort.

Some people prefer morning intake, reasoning that maca's energy-support properties may be better used during the day. There is no clinical evidence to confirm or refute this preference.

Practical Protocol

1. Start with 1.5 g (three standard 500 mg capsules) per day with breakfast for the first two weeks.
2. Increase to 3 g/day if well tolerated and effects are desired sooner.
3. Continue consistently for at least eight weeks before evaluating effects on libido or energy.
4. Maca can be cycled (e.g., five days on, two days off) though there is no clinical evidence that cycling is necessary.

At maxfit.ee you can find maca products including NOW Maca 500mg 250 veg. caps., NOW Maca 500mg 100 veg. caps., Ostrovit Maca 90tab, and ICONFIT Maca 90caps. Browse the maca category for the current range.

FAQ

How long does maca take to work?

Most trials reporting effects on libido or mood ran for six to twelve weeks. Consistent daily use for at least four to six weeks is recommended before assessing whether maca is providing benefit.

Does maca affect hormones?

The current evidence does not support the idea that maca directly alters sex hormone levels (testosterone, oestrogen). It may act through other pathways, but the mechanism is not fully established.

Can women take maca?

Yes — maca has been studied in both men and women. Clinical trials in menopausal women have explored effects on mood and symptom frequency. It is not a phytoestrogenic herb (unlike red clover or soy isoflavones).

References

Shin, B. C., Lee, M. S., Yang, E. J., Lim, H. S., & Ernst, E. (2010). Maca (L. meyenii) for improving sexual function: a systematic review. BMC Complementary and Alternative Medicine, 10, 44. https://pubmed.ncbi.nlm.nih.gov/20691074/

Gonzales, G. F., Cordova, A., Vega, K., Chung, A., Villena, A., Gonez, C., & Castillo, S. (2002). Effect of Lepidium meyenii (MACA) on sexual desire and its absent relationship with serum testosterone levels in adult healthy men. Andrologia, 34(6), 367-372. https://pubmed.ncbi.nlm.nih.gov/12472620/