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Catuaba (Trichilia catigua)

Trichilia catigua A. Juss. (Meliaceae)
Evidence Level
Limited
3 Clinical Trials
6 Documented Benefits
2/5 Evidence Score

Bark extract of Trichilia catigua (Meliaceae family) — a Brazilian Amazon medicinal tree. Critical species note: 'catuaba' is a common name applied to multiple unrelated plant species; T. catigua (Big Catuaba) is the primary medicinal species, but adulterations with Erythroxylum catuaba, Anemopaegma arvense, and Heteropterys tomentosa are common. Sourcing verification matters. Traditional Brazilian use for fatigue, depression, anxiety, male sexual dysfunction, and memory deficits. Campos 2005 (, Psychopharmacology) established a dopamine-mediated antidepressant-like mechanism in preclinical models. Human clinical trials remain limited — most evidence is preclinical or traditional.

Studied Dose TRADITIONAL TINCTURE: 30-60 drops 2-3×/day. CAPSULE: 500-1,000 mg standardized bark 1-2×/day. Standard total: 500-1,500 mg/day. Critical: verify Trichilia catigua species ID (vs adulterants). Pregnancy: avoid.
Active Compound Flavalignans (cinchonain Ia, Ib, IIa, IIb), flavan-3-ols (catechin, epicatechin), proanthocyanidins, ω-phenyl alkanes/alkanoic acids, β-sitosterol, stigmasterol, campesterol, ω-phenyl-γ-lactones, alkyl-γ-lactones

Benefits

Dopamine-mediated antidepressant-like mechanism

Campos MM et al. 2005 (Psychopharmacology, doi:10.1007/s00213-005-0052-1) — foundational preclinical mechanism study. Antidepressant-like effects in mice and rats in the forced swimming model via a dopamine-mediated mechanism: concentration-dependent inhibition of dopamine uptake plus increased dopamine release from rat brain synaptosomes (serotonin effects secondary). Distinguishes mechanistically from typical SSRI antidepressants — potentially relevant for depression with anhedonia or motivation deficits.

Supported by Trial 1

Catuama® combination preclinical evidence

Catuama® is a Brazilian commercial combination of T. catigua + Paullinia cupana (guaraná) + Zingiber officinale (ginger) + Ptychopetalum olacoides (muirapuama). Pharmacological and neurochemical evidence in preclinical models, plus NO-mediated vascular relaxation (EC50 ~1,073 μg/mL). Combination context — isolated T. catigua contribution cannot be cleanly separated from the formula.

Supported by Trial 2

Antifatigue and memory effects (preclinical)

and related preclinical studies — antioxidant, anticholinesterase, and antifatigue effects in animal models. Mechanistic basis for the traditional 'energy and memory' indications, though human clinical translation remains limited.

Supported by Trial 2, Trial 1

Antidepressant clinical trial recruiting

LABCAT TCJUSS — Brazilian clinical trial in depressive episode patients, currently recruiting. Emerging clinical evidence; outcome data not yet available. The first dedicated human depression trial would substantially update the evidence picture if positive.

Supported by Trial 3

Aphrodisiac and sexual function (traditional + preclinical)

Ethnopharmacological reviews catalog 74 Brazilian plants used for sexual dysfunction; T. catigua is among 14 with pharmacological confirmation in preclinical models. Mechanisms include NO-mediated vascular relaxation and preclinical PDE5 inhibition. Human ED-specific clinical trials are lacking.

Supported by Trial 2

Anti-inflammatory and neuroprotective (preclinical)

Multiple preclinical studies report anti-inflammatory and antinociceptive effects, plus neuroprotective signals in animal models. Polyphenol-matrix antioxidant activity (flavalignans + flavan-3-ols + proanthocyanidins) is the proposed underlying mechanism.

Supported by Trial 1, Trial 2

Mechanism of action

1

Dopamine reuptake inhibition + release increase (primary mechanism)

Campos 2005 demonstrated concentration-dependent inhibition of dopamine uptake plus increased dopamine release from rat brain synaptosomes. The primary antidepressant-relevant mechanism — distinguishes from SSRIs by acting on the dopamine system rather than serotonin. May be relevant for depression with prominent anhedonia, low motivation, or fatigue.

2

Serotonin reuptake inhibition (secondary)

Campos 2005 also documented secondary serotonin reuptake inhibition. Less prominent than the dopamine effect; raises theoretical interaction concern with SSRI/SNRI antidepressants (additive serotonergic activity).

3

Anticholinesterase activity (memory mechanism)

Preclinical anticholinesterase activity supports the traditional memory-enhancing claims via preserved synaptic acetylcholine. Same enzyme target as donepezil, though effect size is preclinical and modest.

4

NO-mediated vascular relaxation

Catuama® combination demonstrated NO-mediated vascular relaxation (EC50 ~1,073 μg/mL). Mechanistic basis for both cardiovascular and sexual function applications via the nitric oxide pathway.

5

Antioxidant via polyphenol matrix

Flavalignans (cinchonain Ia, Ib, IIa, IIb), flavan-3-ols (catechin, epicatechin), and proanthocyanidins together provide a broad antioxidant matrix. Cinchonain flavalignans are the most distinctive compound class for T. catigua.

6

PDE5 inhibition (preclinical sexual function)

Preclinical PDE5 inhibition activity — the same target as sildenafil. Animal-model finding; human ED translation has not been demonstrated in dedicated trials.

Clinical trials

1
Campos 2005 — T. catigua Antidepressant Mechanism (PMID 16025317, PRECLINICAL FOUNDATIONAL)

Campos MM et al. 2005 (Psychopharmacology, doi:10.1007/s00213-005-0052-1). Antidepressant-like effects in mice and rats in the forced swimming model. In vitro: concentration-dependent inhibition of dopamine uptake plus increased dopamine release from rat brain synaptosomes; serotonin effects secondary. Foundational preclinical mechanism work — defines the dopamine-focused antidepressant rationale.

2
Catuama® Combination Preclinical Studies

Catuama® (T. catigua + Paullinia cupana + Zingiber officinale + Ptychopetalum olacoides) — Brazilian commercial combination. Pharmacological and neurochemical evidence including NO-mediated vascular relaxation (EC50 ~1,073 μg/mL). Combination-context evidence; isolated T. catigua contribution cannot be cleanly separated.

3
NCT02532660 LABCAT TCJUSS — Depression RCT (Recruiting)

NCT02532660 LABCAT TCJUSS — Brazilian clinical trial in depressive episode patients, currently recruiting. Emerging clinical evidence; outcome data not yet available. First dedicated human depression trial — would substantially update evidence picture if positive.

Side effects and drug interactions

Common Potential side effects

Generally well-tolerated at typical doses based on traditional use.
Mild GI upset (occasional).
Theoretical mild stimulant effects (energy ingredient).
Pregnancy/lactation: AVOID (limited safety data).
Bleeding disorders: AVOID (theoretical antiplatelet effects + NCT02532660 exclusion criterion).
Hyperthyroidism: caution (NCT02532660 exclusion).
Long-term safety: extensive Brazilian traditional use but LIMITED modern clinical trial data.
ADULTERATION RISK: multiple species sold as 'catuaba' — choose Trichilia catigua specifically; verify species identification.

Important Drug interactions

Antidepressants (SSRIs, SNRIs, MAOIs): theoretical SEROTONERGIC + DOPAMINERGIC additive effects — caution; consult psychiatrist.
Stimulants: theoretical additive effects.
Anticoagulants (warfarin, DOACs): theoretical antiplatelet effects — monitor.
PDE-5 inhibitors (sildenafil): theoretical additive vasodilatory effects.
Most medications: limited interaction data — caution due to dopamine/serotonin mechanisms.
ACE inhibitors + ARBs: theoretical additive vasodilatory effects (Catuama vascular relaxation mechanism).

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Frequently asked questions about Catuaba (Trichilia catigua)

What is Catuaba (Trichilia catigua)?

Bark extract of Trichilia catigua (Meliaceae family) — a Brazilian Amazon medicinal tree.

What does Catuaba (Trichilia catigua) do?

Campos 2005 demonstrated concentration-dependent inhibition of dopamine uptake plus increased dopamine release from rat brain synaptosomes. The primary antidepressant-relevant mechanism — distinguishes from SSRIs by acting on the dopamine system rather than serotonin. In clinical research, Catuaba (Trichilia catigua) has been studied for dopamine-mediated antidepressant-like mechanism, catuama® combination preclinical evidence, antifatigue and memory effects (preclinical).

Who should take Catuaba (Trichilia catigua)?

Catuaba (Trichilia catigua) may be most relevant for people interested in mood & mental health, libido support, cognitive. It has been clinically studied for dopamine-mediated antidepressant-like mechanism, catuama® combination preclinical evidence, antifatigue and memory effects (preclinical). As with any supplement, consult your healthcare provider before starting, especially if you have medical conditions or take prescription medications.

How long does Catuaba (Trichilia catigua) take to work?

Most clinical trial effects appear over weeks of consistent use; individual response varies. Acute or same-day effects (where applicable) typically appear within hours, but most cumulative benefits — particularly those affecting biomarkers, mood, sleep quality, or chronic symptoms — require 4-12 weeks of regular use to fully assess. If you don't notice benefit after 12 weeks at the appropriate dose, it may not be your responder.

When is the best time to take Catuaba (Trichilia catigua)?

For stress and mood goals, Catuaba (Trichilia catigua) can be taken in the morning, evening, or split through the day. Effects build gradually over weeks; daily consistency matters more than precise timing. Always check product labeling and follow personalized guidance from your healthcare provider.

Is Catuaba (Trichilia catigua) worth taking?

Catuaba (Trichilia catigua) has limited clinical evidence (Evidence Level 2/5 on NutraSmarts) — preliminary research suggests potential benefit, but more rigorous trials are needed. Whether it's worth taking depends on your specific goals, what you've already tried, your budget, and your overall supplement strategy. The honest framing: no supplement is essential for most people, and lifestyle factors (sleep, exercise, diet, stress management) typically produce larger effects than any single supplement. Catuaba (Trichilia catigua) is most worth trying if its evidence-supported uses align with your specific goals.

What is the recommended dosage of Catuaba (Trichilia catigua)?

The clinically studied dose for Catuaba (Trichilia catigua) is TRADITIONAL TINCTURE: 30-60 drops 2-3×/day. CAPSULE: 500-1,000 mg standardized bark 1-2×/day. Standard total: 500-1,500 mg/day. Critical: verify Trichilia catigua species ID (vs adulterants). Pregnancy: avoid.. Always follow product labeling and consult a healthcare provider for personalized dosing recommendations.

What is Catuaba (Trichilia catigua) used for?

Catuaba (Trichilia catigua) is studied for dopamine-mediated antidepressant-like mechanism, catuama® combination preclinical evidence, antifatigue and memory effects (preclinical). Campos MM et al. 2005 (Psychopharmacology, doi:10.1007/s00213-005-0052-1) — foundational preclinical mechanism study.