Herb & supplement monograph

Levant Berry Drug Interactions, Uses, Safety & More

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Interaction report

Drugs that interact with Levant Berry

0 medications have a known interaction with Levant Berry, graded by severity. Select any drug for the full evidence-based detail.

We don’t currently list any known drug interactions for Levant Berry. This doesn’t guarantee none exist — always confirm with your pharmacist before combining supplements with your medications.

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What Severity, Likelihood & Evidence Mean

Severity — How Serious It Can Be

  • Major. Clinically significant; generally best avoided, or used only under direct professional supervision.
  • Moderate. May need monitoring, a dose adjustment, or separating the times you take each one.
  • Minor. Generally not clinically significant, but still worth noting and mentioning to your pharmacist.
  • No known interaction. Checked against our sources with nothing documented — not the same as proven safety.

Likelihood — How Well It’s Documented

  • Likely. Well-controlled human studies have demonstrated the likely existence of this interaction
  • Probable. Interaction has not been documented in well-controlled studies, however, the interaction has been demonstrated in some small human studies or in controlled animal studies in conjunction with multiple case reports.
  • Possible. Interaction has been documented in animal or in lab research, or the interaction has been documented in humans but is limited to case reports or conflicting clinical research exists
  • Unlikely. Interaction has been demonstrated in animal or in lab research but has been shown not to occur in humans.

Where This Data Comes From

  • Interaction records are evidence-graded and sourced from the Natural Medicines database (TRC Healthcare), the same reference used by pharmacists and hospitals.
  • Each drug listed above links to the full report for that exact Levant Berry combination — clinical detail, likelihood, evidence level, and citations.
  • Content is reviewed by licensed HelloPharmacist pharmacists — see our data sources and editorial standards.
Monograph

Levant Berry: Uses, Safety & Side Effects

The bottom line

Levant Berry (Anamirta cocculus) is a highly toxic plant fruit that contains picrotoxin, a powerful poison once used to stun fish and, in the past, as a crude medicine. It is dangerous and is not considered a safe dietary supplement; it should not be taken internally.

Scientific name
Anamirta cocculus
Family
Menispermaceae
Part used
Dried ripe fruit (berry/seed)
Common forms
Historically used as a crude dried berry; today rarely used and not recommended internally
People commonly use it for
  • Historically as a fish poison (stunning fish)
  • Topical preparations for lice and skin parasites
  • Traditional remedies for epilepsy and convulsions
  • Old preparations for skin conditions
  • Source of the compound picrotoxin

Popular and traditional uses — not proof it works. See “Uses & effectiveness” below for the evidence.

Safety at a glance
OverallBest avoided

The berry contains picrotoxin, a potent toxin that can cause seizures and death.

PregnancyBest avoided

Avoid completely; the plant is poisonous and unsafe.

BreastfeedingLikely Unsafe

When used orally or topically; avoid using.

Read the full breastfeeding detail

Pregnancy & breastfeeding ratings are from Natural Medicines (Therapeutic Research Center). Safety guidance is general; always confirm with your pharmacist or doctor for your situation.

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Overview

Levant Berry is the dried fruit of Anamirta cocculus, a large climbing woody vine in the moonseed family. It grows in parts of South and Southeast Asia, including India, Sri Lanka, and Indonesia.

The berry has a long history of use, but mostly as a poison rather than a healthful remedy. Its best-known traditional use was to stun or kill fish so they could be easily caught. The crushed berries were thrown into water, where they affected the nervous systems of fish.

In older medical and folk traditions, the berry was also applied to the skin to treat lice and certain skin problems, and at times was used in crude attempts to treat seizures. Today it is mainly of historical and chemical interest, not used as a modern dietary supplement.

Uses & effectiveness

There is no good clinical evidence that Levant Berry safely treats any health condition. Most of what is known comes from historical accounts, traditional use, and laboratory study of its toxic compound, picrotoxin.

People historically used it for fish poisoning, lice and skin parasites, and as a crude treatment for convulsions. None of these uses are supported by modern, reliable human studies showing it is both safe and effective.

Because the plant is poisonous, its risks far outweigh any unproven benefit. We do not recommend it for any internal use.

How it works

The main active compound in Levant Berry is picrotoxin (a mix of picrotoxinin and picrotin). Picrotoxin is a known central nervous system stimulant and a potent toxin.

In laboratory research, picrotoxin works by blocking certain calming signals in the brain (it acts against GABA, a neurotransmitter that normally quiets nerve activity). By removing this "brake," it can cause excess nerve firing, which leads to muscle twitching, convulsions, and seizures at toxic doses.

This same mechanism explains why the berry stuns fish. It is the reason picrotoxin has been studied as a research chemical rather than developed into a safe medicine.

Safety & precautions

Levant Berry should be considered poisonous. Swallowing the berries or extracts can cause severe and life-threatening effects, including seizures, breathing problems, and death.

No safe dose has been established for internal use. Even small amounts can be dangerous. It should be kept away from children and pets.

Pregnancy and breastfeeding: Avoid completely. There is no safe use of this toxic plant during pregnancy or while breastfeeding.

If you suspect anyone has swallowed Levant Berry or a product containing it, seek emergency medical care or contact a poison control center right away.

Side effects

Because of its toxic nature, side effects can be severe. Reported effects from poisoning include nausea, vomiting, sweating, muscle twitching, confusion, convulsions or seizures, irregular breathing, and loss of consciousness.

Severe overdose can be fatal. Even topical use carries risk if the compound is absorbed or accidentally swallowed.

There is no "mild" safe version of this berry for self-care. Any exposure should be treated as a potential poisoning.

Levant Berry: Reported Adverse Effects

Documented safety reports on Levant Berry from the evidence-graded Natural Medicines (TRC Healthcare) database, shown word-for-word from the licensed record.

Picrotoxin is a GI irritant and central nervous system stimulant. Mild poisoning can lead to headache, dizziness, nausea, coordination disturbances, depression, and spasms or twitching. Larger amounts can cause salivation, vomiting, purging, rapid shallow breathing, drowsiness, palpitations or bradycardia, tonic-clonic spasms, stupor, loss of consciousness, and death. The lethal dose is stated to be 30 mg/kg or 2-3 Cocculus kernels (seeds).

  1. The Review of Natural Products by Facts and Comparisons. St. Louis, MO: Wolters Kluwer Co., 1999.
  2. Gruenwald J, Brendler T, Jaenicke C. PDR for Herbal Medicines. 1st ed. Montvale, NJ: Medical Economics Company, Inc., 1998.
DISCLAIMER: This tool is intended for informational purposes only, and should not be interpreted as specific medical advice. Patients should consult with a qualified healthcare provider before making decisions about therapies and/or health conditions.

Adverse-effects data: Natural Medicines, Therapeutic Research Center

Dosing

There is no established or recommended dose for Levant Berry, because it is toxic and not used as a safe supplement. We cannot provide a dose and strongly advise against taking it internally in any amount.

If you encounter a product that lists this ingredient, do not use it without first checking with a pharmacist or doctor. A licensed health professional can help you choose safer, proven options.

Pregnancy & Breastfeeding

Levant Berry & Breastfeeding

Likely Unsafe

When used orally or topically; avoid using.

  1. The Review of Natural Products by Facts and Comparisons. St. Louis, MO: Wolters Kluwer Co., 1999.
DISCLAIMER: This tool is intended for informational purposes only, and should not be interpreted as specific medical advice. Patients should consult with a qualified healthcare provider before making decisions about therapies and/or health conditions.

© 2026 Therapeutic Research Center

Pregnancy & lactation ratings: Natural Medicines, Therapeutic Research Center

References & further reading

The 2 references that drive our Levant Berry monograph and interaction data, from the evidence-graded Natural Medicines (TRC Healthcare) database. Citations with a link open the study on PubMed or the publisher’s site.

  1. The Review of Natural Products by Facts and Comparisons. St. Louis, MO: Wolters Kluwer Co., 1999.
  2. Gruenwald J, Brendler T, Jaenicke C. PDR for Herbal Medicines. 1st ed. Montvale, NJ: Medical Economics Company, Inc., 1998.
Keep reading

This information is for education only and is not a substitute for professional medical advice. Always check with your pharmacist or doctor before starting, stopping, or combining supplements and medications.

Parts of this content are provided by the Therapeutic Research Center, LLC.

DISCLAIMER: Currently this does not check for drug-drug interactions. This is not an all-inclusive comprehensive list of potential interactions and is for informational purposes only. Not all interactions are known or well-reported in the scientific literature, and new interactions are continually being reported. Input is needed from a qualified healthcare provider including a pharmacist before starting any therapy. Application of clinical judgment is necessary.

© 2021 Therapeutic Research Center, LLC

Brand directory

Brands that make products with Levant Berry

1 brand in our database make a supplement containing Levant Berry.

Product directory

Supplement products with Levant Berry

1 product in our database contain Levant Berry. Open any to see its full ingredient list and every drug interaction we check.

Pharmacist Counseling Corner

Levant Berry: Common Questions

Does Levant Berry interact with prescription medications?
We do not currently list any known drug interactions for Levant Berry. This does not guarantee that none exist, so always confirm with your pharmacist before combining it with your medications.
How are Levant Berry interactions rated?
Each interaction is graded major, moderate, or minor based on how clinically significant it is and the strength of the evidence behind it. Major interactions are the most serious and are best avoided, or used only under close professional supervision.
Is it safe to take Levant Berry with my medications?
It depends on the specific medication. Some combinations are fine, while others call for monitoring, timing changes, or should be avoided. Check your exact drug above and confirm with your pharmacist or doctor before starting, stopping, or changing anything.
Where does this Levant Berry interaction information come from?
Our interaction data is built on the Natural Medicines database — an evidence-graded reference for vitamins, herbs, and supplements — and is reviewed by licensed HelloPharmacist pharmacists, who may add clinical context.
What is Levant Berry used for?
Historically it was used to stun fish and, in folk medicine, applied to the skin for lice and parasites. It has no proven, safe medical use today.
Is Levant Berry safe to take?
No. The berry contains picrotoxin, a potent toxin that can cause seizures and death, so it should not be taken internally.
Can I take Levant Berry during pregnancy or while breastfeeding?
No. It is a poisonous plant and should be avoided completely during pregnancy and breastfeeding.
What should I do if someone swallows Levant Berry?
Treat it as a poisoning emergency. Seek immediate medical care or call a poison control center right away.

Written and reviewed by the HelloPharmacist editorial staff. Our editorial policy

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