Vilca (Anadenanthera colubrina): Benefits, Dosage, Safety & Evidence

Frequently asked questions

How does Vilca produce its psychoactive effects?

Vilca seeds contain tryptamine compounds including bufotenine, DMT, and 5-MEO-DMT that act primarily on serotonin receptors in the brain, particularly 5-HT2A receptors. These compounds are structurally similar to serotonin and produce intense visionary and psychedelic effects by altering normal neurotransmitter activity. The seeds typically require preparation through toasting and grinding to activate their psychoactive properties. Evidence level: C.

Can Vilca interact with antidepressants or other medications?

Yes, Vilca poses serious interaction risks, particularly with MAO inhibitors and SSRIs. Combining Vilca with these medications can cause serotonin syndrome, a potentially life-threatening condition characterized by agitation, rapid heart rate, and high blood pressure. The tryptamine compounds in Vilca affect serotonin systems, and concurrent use with psychiatric medications may cause dangerous cardiovascular effects or severe psychological distress. Those taking any serotonergic medications should avoid Vilca entirely. Evidence level: C.

What is the traditional dosage for Vilca seeds?

Vilca has no standardized safe dosage and should only be used within traditional shamanic contexts under experienced guidance. Traditional preparation involves toasting and grinding the seeds, but the process requires extensive knowledge to reduce toxicity. Self-administration is strongly contraindicated due to unpredictable potency and serious health risks. The seeds contain powerful psychoactive compounds that vary significantly between specimens, making casual use extremely dangerous. Evidence level: C/Traditional.

Is Vilca safe to use during pregnancy or breastfeeding?

No, Vilca is unsafe during pregnancy and breastfeeding. The psychoactive tryptamines, including DMT and bufotenine, can cross the placental barrier and may affect fetal development. These compounds could also pass through breast milk to nursing infants. The intense cardiovascular effects and psychedelic properties pose significant risks to both maternal and fetal health. Women who are pregnant, planning pregnancy, or breastfeeding should avoid Vilca entirely. Evidence level: C.

What is Vilca used for in traditional shamanic practices?

Vilca has been used for centuries by shamans in Argentina, Bolivia, and other Andean regions for healing rituals and spiritual ceremonies. Traditional applications include divination, diagnosing illness, and facilitating visionary experiences for spiritual guidance. The seeds are considered sacred and are used only within ceremonial contexts by trained practitioners who understand proper preparation and safety protocols. Modern use outside this traditional framework is not recommended due to significant safety concerns. Evidence level: Traditional.

What are the risks and side effects of taking Vilca?

Vilca can cause intense psychedelic effects including vivid hallucinations, altered perception, and significant psychological distress or panic. Physical side effects include cardiovascular stress with elevated heart rate and blood pressure. The experience can be overwhelming and may trigger psychotic episodes in susceptible individuals. Contraindications include cardiovascular conditions, history of psychosis, and pregnancy. Due to these serious risks, Vilca should never be self-administered and is safest within traditional ceremonial contexts with experienced oversight. Evidence level: C.

PubMed-compiled information sheet

This sheet was compiled from PubMed (NIH) abstracts using AI assistance. Every factual claim is cited to a real PubMed article (see the source list). It has not yet been human-reviewed — confirm with a healthcare provider before use.

Compiled from 30 PubMed articles · model: gemma4:31b

Summary

Vilca (Anadenanthera colubrina) is a South American tree recognized for its psychoactive properties and diverse pharmacological potential, including anti-inflammatory and antimicrobial activities [PMID:36162548, PMID:39273881].

Background

Anadenanthera colubrina (Vell.) Brenan is an endemic tree to South America, thriving in ecosystems such as the Brazilian semi-arid area, dry forests, savannas, and Andean highlands [PMID:36162548, PMID:38642622, PMID:41936090].

Traditional uses

It is used by indigenous communities (such as the Guaraní, Tupí, and Wichi) in ceremonial, shamanic, and ritual healing practices, as well as for the treatment of respiratory conditions, inflammation, and various infections [PMID:39273881, PMID:41936090].

Active compounds

The plant contains psychotropic alkaloids such as bufotenine (5-hydroxy-N,N-dimethyltryptamine) [PMID:11718320, PMID:41936090]. Other identified compounds include phenolics, flavonoids (catechins, quercetin, kaempferol), proanthocyanidins, tannins, p-hydroxybenzoic acid, hyperoside, and steroidal substances like β-sitosterol and β-sitosteryl linoleate [PMID:29281656, PMID:31597408, PMID:38992070, PMID:24408227].

Mechanism of action

The extract may regulate LPS-induced inflammation by suppressing NF-κB and p38-MAPK signaling pathways [PMID:38992070].

Clinical evidence

Evidence BTransepidermal water loss

A topical polysaccharide-rich preparation (ACP) was evaluated for its effects on water loss and skin proteins in a double-blind placebo-controlled trial [PMID:31743554]

Evidence DPulmonary emphysema (rat model)

Crude hydroethanolic extract of stem bark demonstrated anti-inflammatory potential [PMID:38642622]

Evidence DCutaneous wound healing (rat model)

Alcoholic extract (5%) was used to evaluate fibrogenesis and epithelial coating in skin wounds [PMID:23033126, PMID:26016935]

Evidence DAutoimmune Encephalomyelitis (EAE model)

Ethanolic bark extract attenuated clinical signs and reduced pro-inflammatory cytokines (IL1β, IL-6, IL-12, TNF, IFN-γ) [PMID:39194732]

Evidence DGastric ulcers (rat model)

Carboxymethylated angico gum reduced macroscopic and microscopic damage (edema, hemorrhage) caused by alcohol [PMID:38219933]

Evidence DCandida albicans infections (in vitro)

Safety & adverse effects

The species may present toxic potential due to the presence of psychotropic compounds [PMID:36162548]. However, some in vivo assays using Galleria mellonella showed low toxicity at low doses [PMID:30970088].

Evidence summary

The majority of evidence is derived from in vitro studies and animal models (Level D), with one double-blind placebo-controlled clinical trial regarding topical skin hydration (Level B).

PubMed sources

1.PMID: 36162548 (2023) — Anadenanthera colubrina (Vell) Brenan: Ethnobotanical, phytochemical, pharmacological and toxicological aspects. · Journal of ethnopharmacology
2.PMID: 39273881 (2024) — Contemporary Uses of Vilca (Anadenanthera colubrina var cebil): A Major Ritual Plant in the Andes. · Plants (Basel, Switzerland)
3.PMID: 38642622 (2024) — Anti-inflammatory effect of Anadenanthera colubrina var. cebil (Griseb.) Altschul in experimental elastase-induced pulmonary emphysema in rats. · Journal of ethnopharmacology
4.PMID: 11718320 (2001) — Pharmañopo-psychonautics: human intranasal, sublingual, intrarectal, pulmonary and oral pharmacology of bufotenine. · Journal of psychoactive drugs
5.PMID: 29281656 (2017) — Bark anatomy, chemical composition and ethanol-water extract composition of Anadenanthera peregrina and Anadenanthera colubrina.

Vilca

Sources & Citations

Calculate a safe dose of Vilca

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Frequently asked questions

Summary

Background

Traditional uses

Active compounds

Mechanism of action

Clinical evidence

Safety & adverse effects

Evidence summary

PubMed sources

Government sources

Vilca

Sources & Citations

Calculate a safe dose of Vilca

Related Herbs

Waltheria Indica

Salsola kali

Hypericum patulum

Frequently asked questions

Summary

Background

Traditional uses

Active compounds

Mechanism of action

Clinical evidence

Safety & adverse effects

Evidence summary

PubMed sources

Government sources