Kava Toxic?

Updated 2026-03-06| 2 min read| 1,902 found this helpful
Piper methysticum G.Forst.
1

Kava is classified as low toxicity, with confirmed hepatotoxic and psychoactive properties.

2

High dose exposure causes abnormal breathing, ataxia, and lethargy in test animal models.

3

The plant is strictly unsuitable for use as feed for any livestock or companion animals.

FAQ

Is Kava toxic to Humans?

Abnormal breathing, ataxia, lethargy, potential liver damage with prolonged or high-dose exposure (Low)

Is Kava toxic to Cats?

No specific toxicity data documented; ingestion may cause lethargy, impaired coordination and liver damage (Unknown)

Is Kava toxic to Dogs?

No specific toxicity data documented; ingestion may cause lethargy, impaired coordination and liver damage (Unknown)

Is Kava toxic to Horses?

No specific toxicity data documented; ingestion may cause lethargy, impaired coordination and liver damage (Unknown)

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Toxicity Details

Humans
Low

Abnormal breathing, ataxia, lethargy, potential liver damage with prolonged or high-dose exposure

Cats
Unknown

No specific toxicity data documented; ingestion may cause lethargy, impaired coordination and liver damage

Dogs
Unknown

No specific toxicity data documented; ingestion may cause lethargy, impaired coordination and liver damage

Horses
Unknown

No specific toxicity data documented; ingestion may cause lethargy, impaired coordination and liver damage

Toxicity Snapshot

Toxic PartsAll plant parts containing active compounds are hepatotoxic and psychoactive; the full plant is unfit for animal feed
Exposure RoutePrimary exposure route is oral ingestion of raw plant material or processed kava extracts
Toxic CompoundsKava pyrones (including kavain, dihydrokavain, methysticin, dihydromethysticin); Flavonoids (including flavokavin A, flavokavin B, flavokavin C); Small quantities of essential oil

First Aid & Prevention

First 30 Minutes

  • • Immediately stop all kava exposure or consumption
  • • Induce vomiting only if explicitly advised by a medical professional or veterinarian for recent ingestion
  • • Collect remaining plant material for accurate identification if possible

Contact Vet Immediately

  • • If any symptoms including abnormal breathing, uncoordinated movement, or lethargy appear post exposure
  • • If a companion animal or livestock has ingested any quantity of kava plant or products
  • • If abnormal liver function is suspected after kava exposure

Prevention

  • • Never use kava plant or byproducts as feed for any animal
  • • Store kava products and plant material out of reach of children, pets, and livestock
  • • Avoid unregulated, high-dose, or long-term kava consumption in humans

Treatment & Prognosis

  • • Immediate permanent cessation of all kava consumption
  • • Symptomatic supportive care including respiratory support if required
  • • Ongoing monitoring of liver function to address potential hepatotoxic damage
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Professional Toxicology

Scientific NamePiper methysticum G.Forst.
AliasesKava-kava、Kawa、Kawa-kava、Kawapfeffer、Rauschpfeffer
Toxicity Grade
HumansLow
CatsUnknown
DogsUnknown
HorsesUnknown
Target Organs
LiverCentral nervous systemRespiratory system
Mechanism of Action

• Kava pyrone lactone compounds exert psychoactive and toxic effects, with high or prolonged exposure leading to liver tissue damage

Other Species Risk (CliniTox)

Information from CliniTox veterinary text.

Rat: High doses of kava extract cause abnormal breathing, ataxia, lethargy, and dose-dependent increases in liver weight
Mouse: High doses of kava extract produce similar central nervous system and respiratory symptoms as observed in rat studies
Confusion Risk

The following plants look similar and may be confused:

Black pepper Piper nigrum
Belongs to the same Piper genus, with similar leaf and growth morphology; black pepper is non-toxic for regular consumption, unlike psychoactive, hepatotoxic kava
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Data Sources

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

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