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Catuaba

Brazil's most famous aphrodisiac bark has no controlled trial of catuaba alone for sexual function — the only human data come from Catuama, a four-herb combination, and they concern burning mouth syndrome and basic safety. Botanically it is also a mess, with several unrelated species sold under one name.

What the science says

  • Improves libido or erectile function Limited evidence

    Despite being sold as an aphrodisiac for a century, catuaba has never been tested alone in a randomized trial for libido, erectile function, or sexual satisfaction. Reviews of herbal sexual enhancers place it in the category of traditional reputation without clinical validation, alongside a warning that products in this category are frequent targets for undeclared PDE5 inhibitor adulteration.

  • Acts on brain monoamines and reduces fatigue Limited evidence

    Trichilia catigua bark extract inhibits dopamine and serotonin reuptake and shows monoamine oxidase and acetylcholinesterase inhibition in vitro, and produces antidepressant-like and antifatigue effects in rodent models at 200-400 mg/kg. This is the most credible mechanistic thread in the catuaba literature, but it stops at the animal stage.

  • Relieves burning mouth syndrome (as Catuama) Limited evidence

    A randomized, double-blind, placebo-controlled trial gave 72 patients with burning mouth syndrome 2 capsules daily of Catuama — a fixed combination of guarana, catuaba, muira puama, and ginger — or placebo for 8 weeks. The active group improved significantly more on both the faces scale and visual numeric scale at 4, 8, and 12 weeks. This is a genuine positive result, but it is for a four-herb product in an unrelated indication and cannot be attributed to catuaba.

  • 'Catuaba' is not one plant Limited evidence

    The name is applied commercially to Trichilia catigua (Meliaceae), Erythroxylum vaccinifolium (Erythroxylaceae), and Anemopaegma arvense, which are unrelated and chemically distinct — Trichilia contributes flavan-3-ol dimers, Erythroxylum contributes tropane-type alkaloids. Two bottles labeled catuaba can contain entirely different pharmacology, which is why pooling the literature is impossible.

Dosage & safety

Studied doseNo dose has been validated for any sexual outcome. The burning mouth trial used 2 Catuama capsules daily for 8 weeks; a 28-day tolerability study used 25 mL of Catuama liquid extract twice daily. Standalone catuaba capsules typically supply 500-1000 mg of powdered bark one to three times daily, a convention with no trial behind it. Look for a labeled species — Trichilia catigua has the most supporting pharmacology.
SafetyA 28-day study of Catuama 25 mL twice daily in healthy volunteers reported no severe adverse reactions and no hematological or biochemical changes, which is reassuring for short-term use of that specific product. Catuaba is usually sold in combination with guarana, so caffeine-related insomnia, palpitations, and anxiety are common and often misattributed to the bark. The in vitro monoamine reuptake and MAO inhibition raise a theoretical interaction with SSRIs, MAOIs, and other serotonergic drugs. Products in the herbal aphrodisiac category are repeatedly found spiked with undeclared sildenafil or tadalafil analogues — a serious risk if you take nitrates. Not studied in pregnancy, breastfeeding, or in anyone under 18.

Scientific references

Where to buy

Swanson Vitamins, Full Spectrum® Catuaba Bark, 465 mg, 60 Capsules

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