maca as a nootropic supplement


David Tomen
David Tomen
13 minute read
Maca is known for elevating mood, increasing energy and endurance, boosting learning and memory, and is a potent neuroprotectant

Maca (Lepidium meyenii) is a native Peruvian plant growing over 4,000 m (13,000 ft) high in the Andes mountains.

Maca nootropic redditNative Peruvians (pre-Inca) have cultivated Maca for at least 2,000 years. It is the only sustainable food crop that can grow in the harsh, cold conditions of the upper Andean plateau.

Maca has the highest nutritional value of any food crop grown at this altitude. And is a staple diet of people living high in the Andes.

Modern Peruvian herbal medicine uses Maca as an immune booster, for anemia, tuberculosis, menstrual disorders, PMS, stomach cancer, sexual dysfunction, and for enhancing memory.

Maca is growing in popularity as a superfood and dietary supplement worldwide. And appears on our List of Nootropics because of its natural ability to boost cognition and memory.

Neurohackers are using Maca to increase energy, athletic endurance, mental clarity, boost libido in men and women, help tame PMS symptoms including mood, and chronic fatigue syndrome.

Here we’ll explore how Maca benefits your brain.

Maca helps:

  • Neurotransmitters: Maca contains significant amounts of the amino acids arginine, serine, histidine, aspartic acid, glutamic acid, glycine, valine, phenylalanine, tyrosine, and threonine.
  • Endurance & energy: Maca is used as a sports supplement by strength and endurance athletes to improve trial performance.[i] Likely due to better energy metabolism and improved antioxidant status.[ii]
  • Learning & memory: Natives in the central Peruvian Andes traditionally had their children eat Maca to improve their performance in school.[iii] Likely due to Maca’s ability to boost acetylcholine and act as an antioxidant.[iv]


Maca (Lepidium meyenii) is a Peruvian plant of the brassica (mustard) family and Lepidium genus. It’s closest relative to other plants are rapeseed, mustard, turnip, cabbage, garden cress, and water cress.

maca as a nootropic supplementMaca grows naturally and is cultivated above 4,000 m (13,000 ft) in the Peruvian Andes. In a habitat of intense cold, intense sunlight, and strong winds.

Maca has been used for well over 2000 years in the Andes for nutrition, and to enhance fertility in humans and animals. And has gained popularity worldwide over the last few years as a nootropic supplement and for its medicinal properties.

Traditionally, Maca is harvested and dried naturally for long-term storage. The hard Maca is then boiled in water to soften it and often used by the natives as juice.

Maca contains the amino acids leucine, arginine, phenylalanine, lysine, glycine, alanine, valine, isoleucine, glutamic acid, serine, aspartic acid, histidine, threonine, tyrosine, methionine, and proline.

Maca also contains the minerals iron, calcium, copper, zinc, and potassium.

And Maca contains the metabolites macaridine, macaene, macamides, thiohydantoins and maca alkaloids that are only found in this plant.[v]

Maca comes in three primary colors; yellow, red and black. Clinical studies have revealed that each color of Maca has different concentrations of metabolites. Which likely explains the different biological properties described for Maca.[vi]

maca reviews

How does Maca work in the brain?

Maca boosts brain health and function in several ways. But two in particular stand out.

  1. Maca boosts anandamide. The Maca compound macamide is structurally similar to anandamide, a neurotransmitter that binds to cannabinoid receptors in your brain.[vii]

Anandamide is known as the ‘bliss molecule’ and its name comes from the Sanskrit ‘ananda’ meaning joy, bliss or delight.

Studies have also revealed that Maca acts as fatty acid amide hydrolase (FAAH) inhibitor.[viii] FAAH is known to break down anandamide.[ix]

Researchers think that Maca provides it’s pharmacological effects by prolonging the presence of anandamide in your brain. And possibly binding to cannabinoid receptors.

Which may account for Maca’s ability to boost libido, regulate hormones, regulate metabolism, improve memory and act as an antidepressant.[x]

  1. Maca reduces anxiety & depression. Maca is well-known for boosting libido, sexual function, and reducing anxiety & depression in both men and women. But studies show Maca does this without having a direct effect on hormones.

Researchers at Victoria University in Australia conducted a randomized, double-blind, placebo-controlled trial with 29 postmenopausal women.

The women were given 3.3 g per day of Maca or a placebo for a total of 12 weeks in this crossover trial. Blood samples for estradiol, follicle stimulating hormone (FSH), sex hormone binding globulin (SHBG), thyroid stimulating hormone (TSH), full lipid profiles, glucose and serum cytokines were collected at 6 and 12 weeks. As well as a test to assess the severity of menopausal symptoms.

No differences were found in serum concentrations of hormones from the baseline. But there was a significant reduction in scores for anxiety and depression.

The study concluded that Maca at 3.3 g per day reduced anxiety and depression independent of hormone levels.[xi]

maca nootropic benefitsAntidepressant activity has been shown with all three varieties of Maca; yellow, red, and black.[xii]

Research has not proven this yet, but I speculate that this antidepressant activity including a boost in libido with Maca could be due to some of the amino acids it provides including tyrosine and GABA. And its antioxidant activity in the brain.

How things go bad

Most of us do not get the phytonutrients from food our body and brain need every day. The nutrients we need that contribute to neurotransmitter synthesis and release, and neuroprotection. Including preventing oxidative damage from free radicals.

A deficiency in these nutrients contributes to:

↑ Chronic inflammation

↑Accelerated aging

↑ High cholesterol and triglycerides

↑ Increased belly fat

↑ Insulin resistance

Mitochondrial insufficiency and dysfunction

↑ Neurodegeneration

Maca is unique in the number and quantity of amino acids, and metabolites found only in this plant that supports mood, learning and memory, sexual well-being and overall health.

Maca benefits

Maca has been used as a staple food source by the native Inca and pre-Inca of the Central Peruvian Andes for thousands of years.

maca dosageThe Inca first domesticated the plant over 2,000 years ago. And in 1553, Spanish conquistador Cieza de León recorded the first written description of Maca use.[xiii]

Maca is rich in calcium, copper, Vitamins B1, B2 & B6, Vitamins C, iron, iodine, manganese, niacin, potassium, zinc, 20 different fatty acids (including linolenic, palmitic, and oleic acids), and 19 amino acids (including leucine, arginine, phenylalanine, histidine, threonine, tyrosine, and methionine), choline and GABA.

Maca also contains macamides and the alkaloid macaridine which are unique to this plant.

The Inca used Maca to boost energy and endurance, treat sexual dysfunction in men and women, support the immune system, tame menopause symptoms, menstrual issues, help memory and cognition, and even some cancers.

The macamides in Maca boost anandamide levels which increases mood and feelings of happiness.

Maca reduces hemoglobin which contributes to Chronic Mountain Sickness.

Maca protects against oxidative stress and free radical damage to brain cells.

Maca improves libido, sperm count and mobility, decreases anxiety & depression, lowers elevated blood pressure, increases energy levels and stamina, reduces PMS symptoms including improved mood, seems to boost cognitive function and memory, and reduces enlarged prostate.

Maca truly lives up to its “superfood’ label and may be considered an adaptogen.

How does Maca feel?

Maca has a unique smell that some find unpleasant. So if the smell offends you, I recommend doing what I do and make your own capsules. Or hide your Maca in a smoothie or juice.

maca for anxietySupplementing with Maca should increase your energy levels. But not with the same rush you’d get from coffee or an energy drink. Instead, it feels more like you just woke up from a great night sleep.

Many find that their stamina is better and their performance in any sport gets a boost with Maca.

Some report using Maca provides an increase in libido, and a noticeable reduction in PMS symptoms.

Younger neurohackers report less acne when using Maca. They’re more productive and everything just seems easier.

Older biohackers find that using Maca provides the energy boost they’re looking for. Without any anxiety or jitters, and no blood pressure issues.

If you are unfortunate enough to live in cold climate, Maca may help you combat the winter blues.

Your overall mood should be more upbeat and positive when using Maca as a nootropic supplement.

And using Maca daily keeps you regular.

Maca Clinical Research

Much of the research that has been promoted in the press has been done by a couple of supplement manufacturers. Attempting to promote Maca as an aphrodisiac and testosterone booster.

While it’s true that Maca boosts libido in many people it has no direct effect on hormones including testosterone.

The most trustworthy research has been done at Peruvian University. But most of it is done with animals. While helpful, you should read the studies closely and carefully to learn how Maca works in your brain and body.

The bottom-line will always be how well this nootropic supplement works for you.

Maca improves cognition

A study was conducted at Peruvian University to determine the effects of Yellow, Red and Black Maca on cognitive function and depression. The subjects were mice.

The animals were treated for 21 days in four groups; control, Yellow Maca, Red Maca, and Black Maca. Learning and depression were assessed during the study.

The study concluded that Black Maca was better as improving cognition and learning. All varieties of Maca showed antidepressant activity.[xiv]

Maca improves mood

A randomized, double-blind, placebo-controlled, crossover trial study was conducted at Victoria University in Australia with 14 postmenopausal women.

The women used 3.5 g per day of powdered Maca or a placebo for 12 weeks. Blood samples were analyzed for estradiol, follicle-stimulating hormone, luteinizing hormone, and sex hormone-binding globulin. And the women were assessed for severity of menopausal symptoms.

No differences were seen in the hormone tests. But researchers found that the women experienced a significant reduction in anxiety and depression while using Maca independent of estrogenic and androgenic activity.[xv]

At weeks 8 and 12, Red Maca improved mood in around 80% of subjects.

At week 12, more than 90% of the subjects consuming Red Maca manifested an increase in energy.

Another study with 175 people was conducted at Peruvian University who were given 3 g of either a placebo, Black or Red Maca daily for 12 weeks.

Half of the volunteers lived at low altitudes and the other half at high altitudes. Consumption of extracts of Red and Black Maca resulted in improvement in mood, energy, health-related quality of life scores, and Chronic Mountain Sickness.

The study found that effects on mood, energy and Mountain Sickness were better with Red Maca.[xvi]

Maca improves quality of life

The Health-Related Quality of Life (HRQL) questionnaire is universally used to assess things like physical, mental, emotional, and social functioning.

In other words, it assesses the positive aspects of a person’s life, such as positive emotion and life satisfaction.

A study conducted at Peruvian University with 50 subjects living 4,000 m (13,000 ft) above sea level in the central Peruvian Andes. Half the participants were Maca consumers and the other half did not use Maca.

The study was done with people living at a high altitude because of the prevalence of chronic mountain sickness (CMS).

Living at high altitude is associated with increased hemoglobin levels which in turn produces oxidative stress measured by the inflammatory marker interleukin-6 (IL-6).

Elevated IL-6 has been associated with aging, obesity, increased incidence of heart disease, and cognitive impairment.[xvii]

The researchers concluded after conducting the HRQL survey that consumption of Maca resulted in higher health status scores. And lower chronic mountain sickness (CMS) scores.[xviii]

Maca decreases SSRI-induced sexual dysfunction

One of the major side effects of taking SSRIs for treating depression is sexual dysfunction and reduced libido.

Researchers in the psychiatry department of Massachusetts General Hospital decided to see if they could figure out a way to counteract this problem.

The team conducted a double-blind, randomized study with 20 depressed (mostly) female patients (mean age 36 years) who were experiencing SSRI-induced sexual dysfunction.

The subjects were given either 1.5 g or 3 g of Maca per day for the duration of the study. The researchers found that the high dose group (3 g/day) had a significant improvement in relief from sexual dysfunction but not the 1.5/day group.

The study concluded that Maca root may alleviate SSRI-induced sexual dysfunction, and there may be a dose-related effect. Maca may also have a beneficial effect on libido.[xix]

Maca Recommended Dosage

maca side effectsRecommended dosage of Maca for cognitive benefit is up to 5 grams per day.

And like most nootropics, more does not work better. Too much Maca will upset your stomach.

Maca Side Effects

Maca is non-toxic and safe at recommended doses.

Higher doses of Maca can cause intestinal gas.

Raw Maca (not gelatinized) contains high amounts of glucosinolates which can cause problems if you have thyroid issues (i.e. hypothyroid).[xx]

No drug interactions or contraindications have been reported.

Type of Maca to Buy

Maca is available as a powder, capsules, flour, liquor and extract.

As a nootropic supplement it is typically used in powder form dissolved in water or a smoothie. Or in capsule form.

In general, Maca is available as dehydrated raw or dried powder, or gelatinized Maca powder.

Maca is gelatinized by boiling and pressurizing the raw material to remove fiber and make it easier to digest.

Maca is traditionally cooked by the Andean people. So gelatinized Maca works best for nootropic benefit. Ignore any advice that claims raw Maca is best. It’s just not true.

Maca is available in Yellow, Red or Black and each provides unique benefits. Black Maca has been shown to boost learning and memory. And all three types of Maca provide antidepressant benefits.

The purest Maca comes from high in the Andes of Peru. “Certified organic” is a bit of an oxymoron because all Maca grown in the Peruvian Andes is organic naturally.

Beware that Maca is also popular now in China and some Maca for export comes from that country. And should be avoided.

Nootropics Expert Recommendation

Nootropics Expert Tested and ApprovedMaca up to 5 grams per day

I recommend using Maca as a nootropic supplement.

Your body does not make Maca on its own. So to get its benefits you must take it as a supplement.

Maca can be particularly effective as an energy booster. And helps increase athletic endurance.

Maca may provide an increase in libido, and a noticeable reduction in PMS symptoms including better mood.

Supplementing with Maca is a great way to beat the winter blues.

And for many neurohackers, your overall mood should be more upbeat and positive when using Maca as a nootropic supplement.

Most clinical studies with Maca showed positive results with 3 g of Maca per day. You can and likely should use up to 5 g per day for cognitive benefit.

As an Amazon Associate I earn from qualifying purchases. This post may also contain other affiliate links and I will be compensated if you make a purchase after clicking on my links.

[i] Stone M., Ibarra A., Roller M., Zangara A., Stevenson E. “A pilot investigation into the effect of maca supplementation on physical activity and sexual desire in sportsmen.” Journal of Ethnopharmacology. 2009 Dec 10;126(3):574-6 (source)

[ii] Yang Q., Jin W., Lv X., Dai P., Ao Y., Wu M., Deng W., Yu L. “Effects of macamides on endurance capacity and anti-fatigue property in prolonged swimming mice.” Pharmaceutical Biology. 2016;54(5):827-34 (source)

[iii] Gonzales G.F. “Ethnobiology and ethnopharmacology of Lepidium meyenii (Maca), a plant from the Peruvian highlands.” Evidence Based Complementary Alternative Medicine. (2012) 2012:193496. 10.1155/2012/193496 (source)

[iv] Rubio J., Dang H., Gong M., Liu X., Chen S-I., Gonzales G.F. “Aqueous and hydroalcoholic extracts of Black Maca (Lepidium meyenii) improve scopolamine-induced memory impairment in mice.” Food and Chemistry Toxicology. (2007) 45:1882–90. (source)

[v] Valerio L.G., Gonzales G.F. “Toxicological aspects of the South American herbs cat’s claw (Uncaria tomentosa) and Maca (Lepidium meyenii) : a critical synopsis.” Toxicology Review. 2005;24(1):11-35. (source)

[vi] Clément C., Diaz Grados D.A., Avula B., Khan I.A., Mayer A.C., Ponce Aguirre D.D., Manrique I., Kreuzer M. “Influence of colour type and previous cultivation on secondary metabolites in hypocotyls and leaves of maca (Lepidium meyenii Walpers)” Journal of the Science of Food and Agriculture. 2010 Apr 15; 90(5):861-9. (source)

[vii] Hajdu Z., Nicolussi S., Rau M., Lorántfy L., Forgo P., Hohmann J., Csupor D., Gertsch J. “Identification of endocannabinoid system-modulating N-alkylamides from Heliopsis helianthoides var. scabra and Lepidium meyenii.” Journal of Natural Products. 2014 Jul 25;77(7):1663-9 (source)

[viii] Almukadi H., Wu H., Böhlke M., Kelley C.J., Maher T.J., Pino-Figueroa A. “The macamide N-3-methoxybenzyl-linoleamide is a time-dependent fatty acid amide hydrolase (FAAH) inhibitor.” Molecular Neurobiology. 2013 Oct;48(2):333-9 (source)

[ix] Deutsch D.G., Chin S.A. “Enzymatic synthesis and degradation of anandamide, a cannabinoid receptor agonist.” Biochemical Pharmacology. 1993 Sep 1;46(5):791-6. (source)

[x] Vu H. “Fatty Acid Amide Hydrolase (FAAH) Inhibitors: Discovery in Lepidium meyenii (Maca) Extracts.” Proceedings of The National Conference On Undergraduate Research (NCUR) 2012 (source)

[xi] Stojanovska L., Law C., Lai B., Chung T., Nelson K., Day S., Apostolopoulos V., Haines C. “Maca reduces blood pressure and depression, in a pilot study in postmenopausal women.” Climacteric. 2015 Feb;18(1):69-78. (source)

[xii] Rubio J., Yucra S., Gasco M., Gonzales G.F. “Dose–response effect of black maca (Lepidium meyenii) in mice with memory impairment induced by ethanol.” Toxicology Mechanisms and Methods (2011) 21:628–34. (source)

[xiii] Cieza de León P. Chronicle of Peru. First Part. London, UK: Hakluyt Society; 1553.

[xiv] Rubio J., Caldas M., Dávila S., Gasco M., Gonzales G. “Effect of three different cultivars of Lepidium meyenii (Maca) on learning and depression in ovariectomized mice” BMC Complementary and Alternative Medicine. 2006; 6: 23. (source)

[xv] Brooks N.A., Wilcox G., Walker K.Z., Ashton J.F., Cox M.B., Stojanovska L. “Beneficial effects of Lepidium meyenii (Maca) on psychological symptoms and measures of sexual dysfunction in postmenopausal women are not related to estrogen or androgen content.” Menopause. 2008 Nov-Dec;15(6):1157-62 (source)

[xvi] Gonzales-Arimborgo C., Yupanqui I., Alarcón-Yaquetto D.E., Zevallos-Concha A., Caballero L., Gasco M., Zhao J., Khan I.A., Gonzales G.F. “Acceptability, Safety, and Efficacy of Oral Administration of Extracts of Black or Red Maca (Lepidium meyenii) in Adult Human Subjects: A Randomized, Double-Blind, Placebo-Controlled Study.” Pharmaceuticals (Basel, Switzerland). 2016 Aug 18;9(3). pii: E49 (source)

[xvii] Jenny N.S. et. al. “Long-term assessment of inflammation and healthy aging in late life: the Cardiovascular Health Study All Stars.” Journals of Gerontology, 2012 Sep;67(9):970-6. (source)

[xviii] Gonzales G.F., Gasco M., Lozada-Requena I. “Role of maca (Lepidium meyenii) consumption on serum interleukin-6 levels and health status in populations living in the Peruvian Central Andes over 4000 m of altitude.” Plant Foods for Human Nutrition. 2013 Dec;68(4):347-51 (source)

[xix] Dording C.M., Fisher L., Papakostas G., Farabaugh A., Sonawalla S., Fava M., Mischoulon D. “A double-blind, randomized, pilot dose-finding study of maca root (L. meyenii) for the management of SSRI-induced sexual dysfunction.” CNS Neuroscience and Therapeutics. 2008 Fall;14(3):182-91 (source)

[xx] Meissner H.O., et. al. “Peruvian Maca (Lepidium peruvianum): (I) Phytochemical and Genetic Differences in Three Maca Phenotypes” International Journal of Biomedical Sciences 2015 Sep; 11(3): 131–145. (source)

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Join The Discussion - 69 comments

August 14, 2023

Hello David, recently I found articles that are saying that Maca can be dangerous due to stimulating estrogen signaling in prostate cancer cells. What is your opinion on that.

Article links:


    David Tomen
    August 15, 2023

    Hristo, interesting studies. But they were only done in a petri dish and not humans. I’ve not seen anything related to Maca and cancer in humans. On the other hand, if you have or had breast or prostate cancer you may want to avoid using Maca until more is known about these effects.

      August 17, 2023

      I am a healthy male in mid 20s. Do i have to be worried about these statements or I can take maca with no worries. Thanks for your time.

        David Tomen
        August 21, 2023

        Do you have prostate cancer? If not then you don’t have anything to worry about.

March 8, 2023

Hi David.
I can’t seem to find anywhere online if it is safe or a good idea to combine Maca with rhodiola? And also can you combine Valerian or skullcap with either Maca or rhodiola or with both of these. It seems I may have longstanding borderline personality disorder. Any thoughts or help with this would be much appreciated. Thank-you.

    David Tomen
    March 8, 2023

    June, you can’t find it because no one wants to pay the billions of dollars required to conduct the clinical studies.

    The best thing I can suggest is become very familiar with how each of the supplements you want to try – how they work. Is there any synergy between them? Do any of them share the same mechanism of action? Or is each one different in how they work in your brain? You can learn this be closely reading my research as well as other clinical studies published online.

    A “personality disorder” is much too vague to know what to recommend. I’m happy to do a consultation with you if you prefer.

Aleksander Narodowski
December 7, 2022

Hi David!

I just want to say, I hope my anegdote will help someone with anhedonia. Today I took 4 capsules of 10:1 600mg MACA (about 24g of MACA) and my anhedonia is gone! FAAH inhibitors help to increase dopamine in reward center and control oxytocin, for the first time in 5 years I’m able to get goosebumps from listening to my favorite music. I suffer form PSSD, 1 month on SSRI made me unable to cry and feel anything when I hug my family, now everything changed.

I tried to attempt other things before to heal anhedonia

1. Serotonin boosters like KANNA, tryptophan during day helped me remove stress and made me a little more emotional (possibly due to serotonin modulating properties on oxytocin)

2. Dopamine boosters helped with motivation but it was anticipatory pleasure, not consumatory pleasure. Ritalin for example made my emotions worse.

3. Opioid boosters (enkephalinase inhibitors and antagonists) like low dose naltrexone, D-Phenylalanine, Rhodiola, Semax/Selank made my anhedonia a little better but it was weak. Opioid receptors play important role in satisfaction from doing things: (normal naltrexone dose induced anhedonia by blocking opioids)

4. I believe in FAAH inhibitors/Cannabinoids MACA, Oleamide, EGCG, CBG as it made the most pronouced difference in my case 🙂

thank you!

    Aleksander Narodowski
    December 7, 2022

    I would also want to add,

    5. NMDA antagonist didn’t work for me, I thing glutamate is crucial for firing dopamine in NAcc. Nactyl-l-cysteine and magnesium which mostly control glutamate in inhibitory way (there are hundreds of people on longecity and reddit to confirm this) made me more numb,
    Also lithium orotate made me enable to experience highs and lows so I wouldn’t recommend it someone who want to feel everything more.

    6. Testosterone boosting suplements also numbed me (I was lacking apathy and was very confident, mans don’t cry right? 🙂

    Estrogen will help to feel emotions if someone is low in it. Womans are naturally more emotional.

    For me Nootropicsexpert website was the best introduction into nootropics and how to live my life. Thank you!

      David Tomen
      December 10, 2022

      Thank you for sharing Aleksander.

    May 18, 2023

    Hi Aleksander. Is using faah inhibitors like maca still working for your anhedonia?

October 15, 2022

Hey Dave,

Just wanted to ask about the three different colours of Maca, especially as you say that “each provides unique benefits”.

Just wondering what those particular unique benefits are for the Yellow, Red, and Black forms of Maca?

Or even which colours are best for particular purposes; e.g. “x colour is best for mood, libido, anxiety, depression, stress, energy, etc”?

Is there a particular colour out of the three you believe is “best” in an overall general sense?

Thanks 🙂

    David Tomen
    October 22, 2022

    James, scroll back up and read the all the clinical studies under the sub-heading “Maca Clinical Research” and you’ll get your answer.

October 13, 2022

Hi David – Im planning to take Maca powder (5g) to increase energy and libdo. Curious if my body will build tolerance if I consume it everyday or should I cycle it on a weekly basis (ie only consume it on Wed-Sun and off it on Mon-Wed)?

    David Tomen
    October 14, 2022

    Kevin, the Inca used Maca every day and didn’t take a break. Otherwise, they’d starve. Maca is considered a superfood because of all the nutrients and amino acids it contains. You body will choose what to use from Maca and expel the rest.

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