Bugbane

BotanicalBest with a meal

What is it

Bugbane is a common name for plants in the genus Cimicifuga (now often classified as Actaea), most notably black cohosh (Actaea racemosa) and related species. It has been used historically for menopausal and gynecological symptoms.

Evidence for 1 use

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

Menopausal hot flashes

Good Evidence

Black cohosh standardized extract has shown modest benefit over placebo for hot flashes in several RCTs, though results are inconsistent.

How it works

Bugbane root contains triterpene glycosides (such as actein and 26-deoxyactein), phenolic acids, and other compounds. Although early hypotheses suggested estrogenic activity, current evidence suggests black cohosh acts primarily through serotonergic, GABAergic, or dopaminergic pathways rather than direct estrogen receptor binding. This may explain modest effects on hot flashes in menopausal women without typical estrogenic side effects.

Dosage

Most studies use standardized black cohosh extract at 20-80 mg per day (equivalent to ~40 mg crude herb).

When and how to take it

Typically taken once or twice daily with meals.

2 commercial forms

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

Standardized black cohosh extract

Common European-style standardized extract.

Most clinical evidence uses this form.

Crude root powder

Traditional herbal form.

Variable.

Safety

Generally well tolerated short-term. Gastrointestinal upset is the most common side effect. Rare cases of hepatotoxicity have been reported, leading to liver-warning labels in some countries; causal relationship is debated.

Who should be cautious

Avoid in pregnancy and breastfeeding, in active liver disease, and in hormone-sensitive cancers without medical guidance.

Interactions

Potential interactions with hepatotoxic drugs; may affect tamoxifen activity. Caution with hormone therapy.

Frequently asked questions

Is bugbane the same as black cohosh?⌄

Black cohosh is the most common species sold as 'bugbane', but several related species share the common name.

Is black cohosh safe for my liver?⌄

Rare hepatotoxicity reports exist; stop use and seek medical advice if symptoms of liver dysfunction develop.

References

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

Research on Bugbane (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.