Maca Drug Interactions, Uses, Effectiveness, Safety & More

Maca (Lepidium meyenii) is a root vegetable that grows high in the Andes Mountains of Peru, often above 12,000 feet. It is related to plants like broccoli, cabbage, and radish. People in this region have eaten maca as a food for hundreds of years.

The root is dried and ground into a powder or made into capsules, tablets, and liquid extracts. Some products are "gelatinized," meaning the starch is removed to make the powder easier to digest. Maca roots come in different colors, such as yellow, red, and black, and some companies claim each color has different effects.

Maca is rich in nutrients, including carbohydrates, fiber, some protein and amino acids, and small amounts of vitamins and minerals. It is most popular as a supplement for energy, sexual health, and menopause-related complaints.

Maca contains a mix of nutrients and plant compounds. Researchers have focused on substances called macamides and macaenes, which are unique fatty acid compounds found in the root. It also contains glucosinolates (similar to those in broccoli), sterols, and various amino acids.

The exact way maca may affect libido, energy, or menopause symptoms is not well understood. Unlike soy or some other plants, maca does not appear to act directly like estrogen in the body. Some scientists think it may work through effects on mood, stress, or general nutrition rather than hormones.

Most of the proposed mechanisms come from laboratory and animal research, so it is not certain how well they apply to people.

Maca has a long history of being eaten as a food in Peru and is generally considered well tolerated for most adults when used short term. However, the long-term safety of concentrated supplements has not been well studied.

People with hormone-sensitive conditions (such as certain breast, uterine, or prostate concerns) and those with thyroid problems should be cautious, because maca contains compounds called goitrogens that could affect the thyroid, especially in large amounts. Talk to your doctor first.

Pregnancy: There is not enough reliable safety information, so it is best to avoid maca supplements during pregnancy. Eating maca as a normal food is different from taking concentrated supplements.

Breastfeeding: Safety while breastfeeding is unknown, so avoid maca supplements unless your doctor advises otherwise.

As with any supplement, choose products from reputable brands, since quality and purity can vary. Always check with your pharmacist or doctor before starting maca, especially if you have a health condition or take medications.

Maca is usually well tolerated. When side effects happen, they are most often mild and may include stomach upset, bloating, gas, or changes in mood or sleep. Some people report feeling more energized, which could make sleep harder if taken late in the day.

Serious side effects have not been commonly reported, but high-quality long-term safety data are limited. Stop using maca and contact a healthcare provider if you notice an allergic reaction or any unusual or concerning symptoms.

There is no official or standardized dose of maca, and the amounts used in studies have varied widely. Because of this, it is best to follow the directions on the product label.

Maca is sold in different forms, including raw powder, gelatinized powder, capsules, and extracts, and the strength can differ between products. Some products are standardized for macamides and macaenes, but there is no agreed-upon standard.

Start with the lowest amount on the label and check with your pharmacist or doctor before use, especially if you are taking other medications or have a health condition. Do not assume that taking more will work better or be safer.