# Anisatin **Canonical URL:** https://ingredients.hermeticasuperfoods.com/ingredients/anisatin **Data Source:** Hermetica Superfoods Ingredient Encyclopedia **Updated:** 2026-03-29 **Evidence Score:** 2 / 10 **Category:** Compound **Also Known As:** Japanese star anise toxin, Illicium anisatum extract, sesquiterpene lactone from Illicium anisatum, toxic star anise compound, shikimi toxin ## Overview Anisatin is a potent sesquiterpene lactone neurotoxin found in Illicium anisatum (Japanese star anise). This compound acts as a GABA receptor antagonist, causing severe convulsions and neurological toxicity. ## Health Benefits [{"benefit": "No therapeutic health benefits have been identified in any human studies.", "evidence_quality": "Absence of Evidence"}, {"benefit": "Research is limited to its toxicological profile as a potent neurotoxin and convulsant.", "evidence_quality": "In Vitro/Toxicological"}, {"benefit": "It is not intended for human consumption due to its severe, life-threatening toxicity.", "evidence_quality": "Toxicological Data"}, {"benefit": "Its primary utility is as a laboratory tool for studying GABA receptor antagonism.", "evidence_quality": "In Vitro"}, {"benefit": "It has demonstrated insecticidal activity in non-human studies.", "evidence_quality": "Preclinical"}] ## Mechanism of Action Anisatin acts as a non-competitive antagonist of GABA-A receptors in the central nervous system, blocking chloride ion channels and preventing inhibitory neurotransmission. This blockade leads to uncontrolled neuronal excitation, resulting in seizures and convulsions. The compound also interferes with glycine receptors, further enhancing its excitotoxic effects. ## Clinical Summary No human clinical trials have investigated therapeutic applications of anisatin due to its extreme toxicity. Toxicological studies demonstrate lethal doses as low as 1-2 mg/kg in animal models. Case reports document severe poisoning in humans who consumed Japanese star anise tea, with symptoms including seizures, coma, and death. All available research focuses exclusively on its toxic profile rather than potential benefits. ## Nutritional Profile Anisatin (C15H20O8) is a sesquiterpene dilactone derived from the toxic plant Illicium anisatum (Japanese star anise). It has no nutritional value whatsoever. Macronutrients: negligible/not applicable as a pure isolated toxic compound. Micronutrients: none of nutritional relevance. Bioactive compounds: Anisatin itself is the primary bioactive constituent, classified as a potent non-competitive GABA-A receptor antagonist and convulsant neurotoxin. It acts by blocking chloride ion channels, disrupting inhibitory neurotransmission. Approximate toxic threshold in humans is extremely low (microgram range). Bioavailability notes: Anisatin is readily absorbed through the gastrointestinal tract, which contributes to its acute toxicity profile. It is not metabolized into any beneficial compounds. There are no dietary reference intakes, recommended daily values, or nutritional benchmarks applicable to this compound. It is strictly categorized as a phytotoxin with no caloric, vitamin, mineral, or beneficial bioactive contribution to human nutrition. Consumption in any amount is considered dangerous and potentially lethal. ## Dosage & Preparation No clinically studied dosage ranges exist, as anisatin is a potent toxin and lacks any therapeutic human studies. It is not intended for human consumption in any form or amount. Consult a healthcare provider before starting any new supplement. ## Safety & Drug Interactions Anisatin is extremely toxic and potentially fatal even in small amounts. Symptoms of poisoning include nausea, vomiting, seizures, respiratory depression, and [cardiovascular](/ingredients/condition/heart-health) collapse. No safe dosage has been established for human consumption. The compound is contraindicated in all populations, especially children, pregnant women, and individuals with seizure disorders. Japanese star anise products should be avoided entirely due to anisatin contamination risk. ## Scientific Research No human clinical trials, randomized controlled trials (RCTs), or meta-analyses were identified for anisatin in the provided research. All available literature describes it as a dangerous plant toxin, and its study is confined to in vitro and toxicological research rather than therapeutic applications. ## Historical & Cultural Context There is no evidence of anisatin being used in traditional medicine. While its source plant, *Illicium anisatum*, has been burned as incense in Japan, anisatin itself is recognized historically only as a toxic component of the plant. ## Synergistic Combinations Not applicable; Anisatin is a toxic substance not intended for supplementation or combination with other ingredients. ## Frequently Asked Questions ### What is anisatin used for medically? Anisatin has no recognized medical uses and is classified as a dangerous neurotoxin. All research focuses on its toxic effects rather than therapeutic applications, and it should never be used as a supplement or medicine. ### How toxic is anisatin to humans? Anisatin is extremely toxic with lethal doses as low as 1-2 mg/kg body weight in animal studies. Human poisoning cases have resulted in seizures, coma, and death from consuming contaminated Japanese star anise products. ### What are the symptoms of anisatin poisoning? Anisatin poisoning causes nausea, vomiting, severe seizures, respiratory depression, and cardiovascular collapse. Symptoms typically appear within hours of ingestion and can progress rapidly to coma and death without immediate medical intervention. ### Is Japanese star anise safe to consume? Japanese star anise (Illicium anisatum) should never be consumed due to its high anisatin content. Only Chinese star anise (Illicium verum) is safe for culinary use, but contamination between species has occurred in commercial products. ### How does anisatin cause seizures? Anisatin blocks GABA-A receptors in the brain, preventing the normal inhibitory signals that control neuronal activity. This leads to uncontrolled electrical activity and severe convulsions that are difficult to treat with standard anticonvulsant medications. ### Which foods and plants contain anisatin that should be avoided? Anisatin is primarily found in Japanese star anise (Illicium anisatum) and related Illicium species native to East Asia, which are toxic and distinct from culinary star anise (Illicium verum). Chinese star anise used in cooking is generally safe and contains negligible anisatin levels. Contamination can occur if Japanese star anise is accidentally mixed with culinary varieties, making source verification critical for consumer safety. ### What is the difference between anisatin's toxicity and the safety of culinary star anise? Anisatin is a potent neurotoxin with a low lethal dose, while culinary star anise (Illicium verum) contains little to no anisatin and is considered safe for consumption in normal food quantities. Japanese star anise (Illicium anisatum) contains high concentrations of anisatin and is strictly toxic, whereas Chinese star anise is the species used in spice blends and traditional medicine. This distinction is critical because the two plants are botanically different species with vastly different safety profiles. ### What research exists on anisatin's mechanism as a neurotoxin at the molecular level? Research shows anisatin acts as a GABA receptor antagonist, blocking inhibitory neurotransmission in the central nervous system and leading to uncontrolled neuronal excitation and seizures. Studies have primarily been conducted in vitro and in animal models rather than humans, establishing its potency as a convulsant but offering limited understanding of dose-response relationships in humans. The compound's molecular mechanism makes it a research tool for studying GABAergic function rather than a candidate for therapeutic use. --- *Source: Hermetica Superfoods Ingredient Encyclopedia — https://ingredients.hermeticasuperfoods.com* *License: CC BY-NC-SA 4.0 — Attribution required. Commercial use: admin@hermeticasuperfoods.com*