African Snakeroot

Botanical

What is it

African snakeroot (Rauvolfia vomitoria) is a tropical African shrub whose root bark contains reserpine and related indole alkaloids. It has a history in traditional medicine and as a pharmaceutical source.

Evidence for 1 use

AI-assisted evidence assessment — talk to your doctor before relying on any single supplement.

Blood pressure reduction (historical pharmaceutical use)

Good Evidence

Reserpine, the principal alkaloid from Rauvolfia, was a recognized antihypertensive in the 20th century, but its side effect profile led to replacement by safer drugs.

How it works

Rauvolfia alkaloids, especially reserpine, deplete monoamine neurotransmitters by inhibiting vesicular monoamine transporter (VMAT2). This historically produced strong blood-pressure-lowering and sedative effects. Reserpine has fallen out of favor as a frontline drug because of side effects including depression and parkinsonism.

Dosage

Pharmaceutical reserpine doses are very small (0.1-0.25 mg/day). Supplement preparations vary considerably in alkaloid content, which raises safety concerns.

When and how to take it

Pharmaceutical reserpine is dosed once daily. Supplement use is not recommended without clinical oversight.

1 commercial form

Compare the main delivery options and what they’re best suited for.

Root bark extract

Traditional and herbal supplement form; quality and safety vary.

Alkaloids are orally bioavailable; content highly variable.

Safety

Significant risk profile including depression (sometimes severe with suicidal ideation), nasal congestion, sedation, parkinsonism, and bradycardia. Long-term high-dose use has been associated with increased risk of certain cancers in older studies.

Who should be cautious

Avoid in depression, Parkinson disease, peptic ulcer, pregnancy, and breastfeeding. Should only be used under medical supervision because of strong pharmacology.

Interactions

Major interactions with antihypertensives (additive lowering), digitalis, MAOIs, and CNS depressants. Use is incompatible with many psychiatric and cardiovascular medications.

Food sources

Not a food

Amount
n/a
%DV
—

Frequently asked questions

Is African snakeroot safe as a supplement?⌄

It contains potent alkaloids including reserpine, which has significant side effects including depression. It is not a casual supplement and should be used only under medical supervision.

Can it replace blood pressure medication?⌄

No. While reserpine was historically used for hypertension, modern medications are safer. Self-treating with herbal Rauvolfia is risky.

References

African Snakeroot on NIH DSLD (US supplement label database) — NIH Dietary Supplement Label Database link

Research on African Snakeroot (PubMed search) — PubMed link

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Evidence-based·How we grade evidence

Disclaimer: These statements have not been evaluated by the FDA. This page is educational, not a substitute for personalized medical advice. Evidence grades are AI-assisted assessments — talk to your doctor before starting any new supplement, especially if you’re pregnant, breastfeeding, on medications, or managing a chronic condition.