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When taken by mouth: Maca is LIKELY SAFE for most people when taken in amounts found in foods. Maca is POSSIBLY SAFE when taken by mouth in larger amounts as medicine, short-term. Doses up to 3 grams daily seem to be safe when taken for up to 4 months.
Special Precautions & Warnings:
Pregnancy and breast-feeding: There is not enough reliable information about the safety of taking maca if you are pregnant or breast feeding. Stay on the safe side and avoid use.
Hormone-sensitive conditions such as breast cancer, uterine cancer, ovarian cancer, endometriosis, or uterine fibroids: Extracts from maca might act like estrogen. If you have any condition that might be made worse by exposure to estrogen, do not use these extracts.
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Little is known about the safety and side effects of the short-term or long-term use of maca. Since it is a natural food, it is generally believed to be safe in large doses.
Maca's effect on hormone levels is poorly understood. For instance, some studies have found no effect on sex hormones, while animal studies have reported elevated levels of luteinizing hormone, progesterone, and testosterone.
If you have a hormone-sensitive condition, such as endometriosis, uterine fibroids, or breast, uterine, or ovarian cancer, you shouldn't take maca without consulting your doctor.
Excessive or regular intake of raw maca may interfere with thyroid function.
As with other supplements, maca hasn't been tested for safety in pregnant women, nursing mothers, children, and those with medical conditions or those who are taking medications. *
