Muira Puama and Catuaba: Are You Wasting Money on the Wrong Plant?

Muira puama and catuaba sit side by side on the shelf, but a lab that tested 14 bottles sold as catuaba found only a minority held the bark on the label.

And the study some pages cite for muira puama? It’s about ginkgo.

So before you spend another dollar, here’s what’s actually proven, and what isn’t.

Jump to: Quick answer · Muira puama · Catuaba · Human research · Evidence table · Safety · Which to choose · Buying checklist · FAQ

Quick answer: five differences that matter

What is muira puama?

Muira puama is the root and bark of Ptychopetalum olacoides, a small Amazonian tree about 4 meters tall. You’ll also see marapuama, muirapuama and potency wood.

Amazon healers made root tea for weakness, rheumatism and stomach trouble. Brazil listed the plant in its pharmacopeia in 1956. The libido claim is younger. Drugs.com traces the promotion of muira puama as a male aphrodisiac to 1930s Europe, so the marketing is almost a century old.

The most detailed chemistry paper we found measured the bark. Magnoflorine and menisperine made up 75.96% of the compounds measured. Lupeol, the compound most web pages name, isn’t among the 14 compounds isolated. Two of the authors work for Herbalife and Naturex. Weigh that.

The name on a bottle isn’t enough, either. In Brazil’s northeast, a different tree, Croton echioides, is sold as marapuama. Our muira puama extract guide covers the label checks.

What is catuaba?

Catuaba isn’t a species. It’s a trade name that has landed on several trees, and a 2023 review says that has led to adulterations and controversial effects. The main candidates:

• Trichilia catigua, a stem bark rich in polyphenols. It’s the catuaba in the Brazilian tonic Catuama.
• Erythroxylum vacciniifolium, a bark with tropane alkaloids called catuabines.
• Anemopaegma arvense, a root also sold as catuaba.

Some labels name one of these. Some name “Erythroxylum catuaba.” Many just say catuaba. Catuabines come from Erythroxylum bark, not from the Trichilia bark most often sold.

The name that has no plant

“Erythroxylum catuaba” comes from one man. Arthur J. da Silva coined Erythroxylon catuaba in his 1904 thesis, by analogy to coca, and called his own Tupi etymology todo hypothetico. The International Plant Names Index lists the name as invalid.

The same thesis holds the legend. In Maranhão, people said catuaba trunks stood bare of bark as high as an old man could reach. It tells of a man over fifty who fathered a child every year, then moved his fence to keep his catuaba tree for himself.

Erythroxylum is the coca genus, so people ask about cocaine. We found no paper that reports cocaine in catuaba and none that tested for it. “No evidence of cocaine” is accurate. “Tested cocaine-free” isn’t.

The bigger problem is the bottle. In 2004, Kletter’s lab in Vienna tested 14 commercial catuaba products. Only a minority held the bark on the label, more than half were adulterated, and half held tropane alkaloids. It’s one small test from 2004, so don’t read it as proof that half of today’s shelves are fake. It does make the question fair. The same team also tested T. catigua extracts on rabbit erectile tissue in a dish. No effect.

What human research exists?

Muira puama

UTEP’s herbal fact sheet cites a rat study for libido and mouse work for memory. Drugs.com says clinical evidence is lacking for muira puama alone. Five human studies name it, and all five tested a blend:

• Waynberg & Brewer, 2000. Muira puama plus ginkgo, 202 women, one month, no control group. 65% scored higher on self-rated questionnaires. The authors said a double-blind study was planned. We found no follow-up.
• Nguyen, 2018. A four-part blend with a large dose of L-citrulline, 54 men with ED, no control group. Median erectile scores rose among the men who stayed, and about half reported better erections. But only 16 were still in at month three, and the main reason men left was breaking the rule to stop their ED drugs.
• Oliveira, 2005 and Spanemberg, 2012. Catuama in healthy volunteers for four weeks, and Catuama vs placebo in 72 people with burning mouth syndrome. Neither is about libido.
• Chiavaroli, 2026. A five-ingredient prostate supplement, 59 men, retrospective. Published in September 2026, it is about urinary symptoms, not libido.

Two citation traps. “Stough 2001” gets cited as a muira puama memory study, but it’s a 61-person trial of Ginkgo biloba alone. And the “262 men” figure, about 60% better libido, isn’t in PubMed. Pages disagree on the numbers, so treat it as unverified.

The lab work is real but small. Muira puama extract inhibited acetylcholinesterase in rodent brain tissue and looked antidepressant-like in mice. It’s mostly one Porto Alegre lab, and mice aren’t men.

Catuaba

No human trial of catuaba alone has been published for libido, or for any outcome we found.

ClinicalTrials.gov lists one. It tested a T. catigua extract added to escitalopram for mild depression, enrolled 111 people, and was terminated with no results posted. It’s filed under a product code, so a plant-name search misses it.

The rest is Catuama: the two studies above, plus a conference abstract on 90 women with radiotherapy fatigue that reports no difference between groups. In rodents, T. catigua extract cut immobility in the forced-swim test, an effect tied to dopamine. A later paper found no stress or memory benefit.

How we searched

We ran these searches on 11 October 2026. Re-run them and you should get the same counts, give or take new papers.

• PubMed, muira puama: "muira puama"[tiab] OR muirapuama[tiab] OR marapuama[tiab] OR "Ptychopetalum olacoides"[tiab] returned 51 records. Adding AND Randomized Controlled Trial[pt] returned 0.
• PubMed, catuaba: catuaba[tiab] OR "Trichilia catigua"[tiab] OR Catuama[tiab] returned 81 records, some off topic. The same randomized-trial filter returned 1, the Catuama burning-mouth trial.
• ClinicalTrials.gov, searching intervention names for catuaba, Catuama, Trichilia catigua, muira puama and Ptychopetalum olacoides: 2 trials. Both test a four-ingredient supplement in healthy volunteers and measure markers of vascular aging, not libido. The one catuaba trial sits under a product code (NCT02532660), so a name search misses it.

So as of 11 October 2026, neither database holds a controlled trial of either herb alone for libido. Unindexed Brazilian theses or hospital studies could still exist.

What a real trial would need

A real answer needs one herb per arm so you can see who did what, a placebo, a validated questionnaire such as the IIEF for erections or the FSFI for women, twelve weeks or more, and at least 100 people per arm so chance can’t carry the result.

Nobody has run that trial for either herb.

Muira puama vs catuaba: the evidence table

Why muira puama and catuaba are sold together

Both barks carry an aphrodisiac reputation, and Brazil sold them together long before anyone tested them together. The best-known pairing is Catuama, a tonic that adds guaraná and ginger. Its 2005 package insert lists Trichilia catigua bark and Ptychopetalum olacoides root, and indicates the tonic for mental and physical fatigue, not libido. Guaraná matters here because it brings caffeine, and the label uses caffeine as its marker. The insert also says no cure or prevention data were found, advises against evening use and against use in pregnancy, and warns that other xanthine drugs add to its stimulant effect. We couldn’t confirm today’s formula uses the same species.

So a blend that works doesn’t tell you which herb did it. Most combo products don’t separate each herb’s effect.

Safety, interactions and who should skip them

Safety data is thin for both, and thin doesn’t mean safe. We left dosing numbers out on purpose. No trial of either herb alone gives one, and the figures online come from blends, patents or auto-generated pages.

• In pregnancy and breastfeeding, UTEP says safety isn’t established for muira puama, and Drugs.com says to avoid it. In rats, crude T. catigua extract increased pre- and post-implantation losses.
• Side effects are poorly documented. Drugs.com says adverse-reaction data are lacking, and mild effects in blends include bloating, dyspepsia, headache and nervousness.
• Muira puama extract reduced exploratory behavior in mice in a way the authors compared to an anxiety-producing drug. It’s animal data, so take it as a reason for caution.
• Interactions are theoretical, because no human study exists. T. catigua inhibited MAO-A in a test tube, muira puama inhibited acetylcholinesterase in rodent brain tissue, and guaraná blends add caffeine.
• The FDA keeps finding undeclared sildenafil or tadalafil in male-enhancement products. That’s a category risk, and it matters most if you take nitrates.

Who should skip them

• Anyone who is pregnant or nursing.
• Anyone on an antidepressant or a cholinesterase inhibitor, unless a pharmacist says it’s fine.
• Anyone prone to anxiety or panic, or sensitive to caffeine.
• Anyone who takes nitrates and is tempted by a “male enhancement” product with no test results.

Talk to a doctor if you take any prescription drug, or if erection or libido problems keep coming back. UTEP advises consulting a professional first for ED. Stop and call if your heart races, you feel panicky, or you can’t sleep on a blend.

Which should you choose?

Neither wins. It depends on your goal, and for most goals the evidence for both is Limited or None.

If it’s libido, see a doctor before either herb. If it’s stress or memory, neither has human data. If it’s fatigue, Catuama is registered for it in Brazil, but the one controlled fatigue trial found no difference.

Shopping for the same goal? See our guides to tongkat ali and fadogia, cistanche and safed musli.

Buying checklist

1. Botanical name. Ptychopetalum olacoides for muira puama. For catuaba, the Latin species, not just “catuaba.”
2. Plant part and extract type. Root, bark or wood, and water, ethanol or plain powder. No study ranks them, and a ratio like 10:1 shows how much herb went in, not how strong it is.
3. Catuaba species. Trichilia catigua has the most research. “Erythroxylum catuaba” isn’t a valid name.
4. Third-party testing. A named lab and a batch certificate that confirms identity.
5. Every ingredient with an amount. A proprietary blend can hide a token amount of the herb on the front, and guaraná adds caffeine.
6. No miracle claims. Skip “clinically proven” and “tested cocaine-free.”

So where does that leave you?

Muira puama and catuaba both have a long history and no proof. If you buy either one, buy the one you can identify, and keep your doctor in the loop. If a seller can’t tell you which plant is in the bottle, you have your answer.

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