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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.

How to take it

TimingTiming does not matter, but avoid the evening if the product contains guarana.
With food?Either way.
Worth knowingMost "catuaba" is a blend — check for guarana before blaming the bark for insomnia or palpitations, and look for a labelled species.

Interactions

With medications

  • nitrates (for angina)

    Herbal aphrodisiac products are repeatedly found spiked with undeclared sildenafil or tadalafil analogues, which can cause a dangerous drop in blood pressure with nitrates. avoid this product category entirely if you take nitrates

  • SSRIs, MAOIs and other serotonergic drugs

    In vitro monoamine reuptake and MAO inhibition raise a plausible additive serotonergic effect. do not combine without medical advice

  • stimulant medication

    Catuaba is usually sold blended with guarana, so caffeine adds to palpitations, anxiety and insomnia. check the formula for caffeine before combining

With other supplements

  • caffeine, guarana and other stimulants

    Additive insomnia, palpitations and anxiety — often misattributed to the bark itself. count the caffeine already in the blend

Well-established interactions only — this is not a complete list. Always tell your doctor and pharmacist what you take.

Frequently asked questions

Does catuaba work as an aphrodisiac?

Catuaba has never been tested alone in a randomised trial for libido, erectile function or sexual satisfaction (limited evidence). Its aphrodisiac reputation is traditional, and herbal sexual enhancers are frequently adulterated with undeclared PDE5 inhibitors.

What is catuaba actually proven to do?

The only positive human trial involving catuaba used Catuama, a four-herb combination with guarana, muira puama and ginger, which improved burning mouth syndrome in 72 patients over 8 weeks (limited evidence). That result cannot be attributed to catuaba itself.

Why does catuaba make me jittery or keep me awake?

Catuaba is usually sold blended with guarana, so caffeine-related insomnia, palpitations and anxiety are common and often misattributed to the bark. Check the formula for guarana and avoid taking it in the evening if it contains caffeine.

Is catuaba safe with antidepressants or heart medication?

Catuaba extract inhibits monoamine reuptake and MAO in vitro, so combining it with SSRIs, MAOIs or other serotonergic drugs needs medical advice. If you take nitrates, avoid the herbal aphrodisiac category entirely, because hidden sildenafil or tadalafil analogues can cause a dangerous drop in blood pressure.

Scientific references

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