Black cohosh Toxic?

Updated 2026-03-06| 5 min read| 3,734 found this helpful

The raw, unprocessed whole plant is non-toxic, but it is not approved for use as pet or livestock feed

Long-term, chronic consumption of concentrated black cohosh extracts may cause hepatopathy (liver disease) in humans

Common visual lookalikes of black cohosh are also non-toxic, reducing accidental poisoning risk from misidentification

FAQ

Is Black cohosh toxic to Humans?

Chronic extract intake may cause jaundice, abdominal pain, fatigue, nausea, and elevated liver enzyme levels; no acute toxicity reported from raw plant ingestion (Low)

Is Black cohosh toxic to Cats?

No formal acute toxicity data available; no expected adverse effects from small incidental ingestion, but intentional feeding is not recommended (Non-toxic)

Is Black cohosh toxic to Dogs?

No formal acute toxicity data available; no expected adverse effects from small incidental ingestion, but intentional feeding is not recommended (Non-toxic)

Is Black cohosh toxic to Horses?

No formal acute toxicity data available; no expected adverse effects from small incidental ingestion, but intentional feeding is strictly prohibited (Non-toxic)

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Toxicity Details

Humans

Low

Chronic extract intake may cause jaundice, abdominal pain, fatigue, nausea, and elevated liver enzyme levels; no acute toxicity reported from raw plant ingestion

Cats

Non-toxic

No formal acute toxicity data available; no expected adverse effects from small incidental ingestion, but intentional feeding is not recommended

Dogs

Non-toxic

No formal acute toxicity data available; no expected adverse effects from small incidental ingestion, but intentional feeding is not recommended

Horses

Non-toxic

No formal acute toxicity data available; no expected adverse effects from small incidental ingestion, but intentional feeding is strictly prohibited

Toxicity Snapshot

Toxic PartsRaw whole plant is non-toxic; concentrated plant extracts carry toxicity risk with long-term chronic use. The plant is not suitable for any type of animal feed.

Exposure RouteLong-term oral ingestion of concentrated extracts, regular ingestion of large quantities of plant material as animal feed

Toxic CompoundsSpecific toxic compounds not specified in available source data; bioactive compounds in concentrated extracts are linked to liver injury risk

First Aid & Prevention

First 30 Minutes

• Rinse mouth thoroughly with clean water after large acute ingestion of concentrated extracts
• Monitor for nausea, gastrointestinal upset, or lethargy for 24 hours post-exposure
• Do not induce vomiting unless instructed to do so by a medical provider or veterinarian

Contact Vet Immediately

• Your pet has ingested large quantities of concentrated black cohosh extract
• Your pet shows signs of lethargy, vomiting, jaundice, or appetite loss after exposure
• You suspect your livestock has been regularly fed black cohosh as a feed ingredient

Prevention

• Store concentrated black cohosh herbal supplements out of reach of children, pets, and livestock
• Never use black cohosh as an ingredient in feed for companion or production animals
• Confirm full plant identification before foraging to avoid unintended intake of related species

Treatment & Prognosis

• Supportive care for gastrointestinal symptoms if acute large ingestion occurs
• Liver function testing and monitoring for cases of confirmed chronic extract exposure
• Symptomatic care for liver injury if hepatopathy is confirmed via diagnostic testing

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Professional Toxicology

Scientific NameActaea racemosa L.; Cimicifuga racemosa (L.) Nutt.

AliasesBlack baneberry、Black bugbane、Black snake root、Rattle root、Rattleweed、Snakeroot、Squaw root

Toxicity Grade

HumansLow

CatsNon-toxic

DogsNon-toxic

HorsesNon-toxic

Target Organs

Liver

Mechanism of Action

• Liver injury risk from chronic extract exposure is suspected to be linked to bioactive concentrated compounds that trigger hepatic stress or immune-mediated liver damage

Other Species Risk (CliniTox)

Information from CliniTox veterinary text.

Cattle, sheep, and goats: No confirmed acute toxicity reported, but feeding is not recommended as no nutritional benefit is established and long-term intake may carry unknown health risks

Small companion mammals (rabbits, guinea pigs, hamsters): No specific toxicity data available; intentional feeding of plant material or extracts is not advised

Confusion Risk

The following plants look similar and may be confused:

Other Actaea species Actaea spp.

Visually similar to black cohosh in foliage and bloom structure; most other Actaea species are also non-toxic, though formal identification is still recommended for foraging use

Meadowsweet Filipendula ulmaria

Has similar clustered white bloom structure to black cohosh; it is also non-toxic and commonly used for herbal medicinal applications

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Related Toxic Plants

Monkshood

Aconitum napellus

Severe toxicity, can cause fatal cardiac and neurological toxicity even after ingestion of very small amounts

Common buttercup

Ranunculus spp.

Moderate toxicity, causes skin blistering on contact and severe gastrointestinal irritation if ingested

Larkspur (Delphinium)

Delphinium spp.

High toxicity, especially to livestock, causing rapid neuromuscular paralysis and potential death

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Data Sources

1. CliniTox (Universität Zürich)

This information is for reference only and does not constitute medical advice. If ingestion or poisoning is suspected, seek medical or veterinary attention immediately.