--- title: "Kavain: Dosage & Side Effects | BodyHackGuide" url: https://www.bodyhackguide.co/compound/kavain description: "Kavain: dosing protocols, mechanism & side effects." lang: en --- Skip to content Compare notes on r/BodyHackGuide (https://reddit.com/r/bodyhackguide) Compare notes with other researchers. Join r/BodyHackGuide (https://reddit.com/r/bodyhackguide) # Kavain Nootropics: https://www.bodyhackguide.co/wiki#cat-nootropics Status Preclinical for isolated kavain (in-vitro and animal mechanistic data),, not approved for human use Evidence Not graded on a research bench yet Kavain (kawain) is the principal kavalactone in kava (Piper methysticum) and the main compound behind kava's calming, anxiolytic effect. It positively modulates GABA-A receptors outside the benzodiazepine site and dampens voltage-gated Na+ and L-type Ca2+ channels. Reviewed 30 October 2026 01 Overview ## What Kavain is Sold as a research-use-only / supplement material in some regions; it carries a documented but idiosyncratic liver-injury risk. Research use only. ### How it works Kavain is the most abundant kavalactone in kava (Piper methysticum) and the main driver of the plant's calming activity. It is a research-use-only compound; the mechanisms below come from in-vitro and animal work on isolated kavain plus human trials of the parent kava extract. Read the full mechanism Show less - GABA-A positive allosteric modulation: Kavain potentiates GABA-A receptors across many subunit combinations, enhancing GABA-evoked chloride current. This potentiation is NOT blocked by flumazenil and does not act through the classical benzodiazepine site - likely why kava produces calm without a typical benzodiazepine dependence profile [PMID:27332705]. Earlier radioligand work showed (+)-kavain enhances GABA-A binding without engaging the benzodiazepine site [PMID:9776662]. - Voltage-gated Na+ channel blockade: Kavain non-competitively inhibits batrachotoxin binding to receptor site 2 of voltage-gated Na+ channels, reducing neuronal excitability [PMID:9690349]. - Ca2+ and K+ channel effects: In hippocampal and dorsal-root-ganglion recordings, kavain shows weak Na+ antagonism, pronounced L-type Ca2+ channel antagonism, and positive modulation of the early K+ outward current - a pattern overlapping with mood-stabiliser drugs such as lamotrigine [PMID:11642654]. - Broader CNS receptor activity: Kavain-containing kava extracts also interact in vitro with dopamine D2, opioid (mu/delta) and histamine receptors, which may shape the overall subjective profile [PMID:11458444]. Net effect: reduced neuronal excitability plus enhanced GABAergic tone, producing anxiolysis, mild sedation and muscle relaxation. ### Benefits listed - Reduced anxiety and nervous tension - the parent standardized kava extract (of which kavain is the principal kavalactone) produced a moderate anxiolytic effect versus placebo in generalized anxiety disorder RCTs [PMID:23635869][PMID:19430766] - Physical and mental relaxation without the heavy sedation or dependence profile of benzodiazepines, since kavain modulates GABA-A outside the benzodiazepine site [PMID:27332705] - Calming and sleep-onset support, reported anecdotally with evening kava/kavain use (isolated-kavain benefit is extrapolated from extract data plus community use, not directly trialed) - Mild muscle relaxation and a soothing analgesic feel, consistent with kavain's effects on voltage-gated Na+ and L-type Ca2+ channels [PMID:9690349][PMID:11642654] Show 1 more Show less - Sociable, clear-headed calm frequently described in traditional and community use of kava beverages ### What to expect 1. - Onset within roughly 15-45 minutes of an oral dose; effects typically last a few hours 2. - A calm, relaxed, often sociable and clear-headed feeling rather than heavy sedation at low doses 3. - Mild muscle relaxation and reduced physical tension 4. - Possible temporary tongue/mouth numbness with kava beverages (a local-anesthetic effect of kavalactones); less pronounced with capsules 5. - At higher doses: drowsiness and reduced coordination - do not drive or operate machinery 6. - No euphoric high; tolerance and next-day grogginess can appear with frequent use Individual responses vary. Timeline based on commonly reported research observations. 02 Research Free with email ## What the research shows No research bench grades Kavain yet. Benches compare compounds people pair, with the evidence for each. ### Unlock the research summary Enter your email to keep reading. It is free, and it opens these sections on every compound page in this browser. - A summary of the key research - Safety and side effects - A link to the PubMed results You also get the free peptide cheat sheet by email. Unsubscribe anytime. Have an account? Sign in (https://www.bodyhackguide.co/auth) 03 Safety ## Kavain side effects and interactions ### Side effects Not in our record Our record lists no side effects for Kavain. That means none are recorded here, not that there are none. The Research section has the written safety notes. ### Who should not use it Contraindications Do not use with: existing liver disease or elevated liver enzymes; alcohol; other hepatotoxic drugs or supplements; pregnancy or breastfeeding. Avoid before driving or operating machinery, and before surgery (CNS-depressant and possible additive effects with anesthesia). Caution or avoid with benzodiazepines, barbiturates, opioids, Z-drugs and other CNS depressants (additive sedation). Because kava/kavain has dopamine D2 antagonist activity [PMID:11458444], avoid in Parkinson's disease or with dopaminergic therapy. Not for use under 18. Discuss with a clinician before use if you take any prescription medication, especially drugs metabolized by liver CYP450 enzymes. ### Interactions 6 pairings in our record: 6 not rated. - Not rated Alcohol - additive CNS depression and markedly increased hepatotoxicity risk; do not combine - Not rated Benzodiazepines, barbiturates, Z-drugs, opioids and other sedatives - additive sedation and CNS depression - Not rated Hepatotoxic drugs and supplements (e.g., excess acetaminophen, certain statins, other herb-induced-liver-injury agents) - compounded liver risk [PMID:34307603] - Not rated Dopaminergic / anti-Parkinson drugs - kava's D2 antagonism may oppose them and can provoke extrapyramidal effects [PMID:11458444] - Not rated Liver CYP450 substrates - kavalactones inhibit several CYP enzymes in vitro, which could raise blood levels of co-administered medications; check with a pharmacist - Not rated Anesthetics - potentiation of anesthetic/sedative effect; stop before scheduled surgery This interaction data is compiled from published research and community reports. It may not be exhaustive. Always consult a healthcare professional before combining compounds. Need bloodwork before starting? Full hormone + metabolic panels from Anabolic Insights. Code CHONCH for first-order discount. Order Bloodwork (https://anabolicinsights.ai/?ref=nwm2zjb) 04 Dosing Free with email ## Kavain dosage and protocols Dose range 50-250 mg Dosing 1-2 times daily, as needed; not intended for continuous long-term daily use ### Unlock the dosing protocols - Dose, how often and how long - Beginner, intermediate and advanced protocols - Additional dosage notes 05 Prices ## Kavain prices No listings We do not track a vendor for Kavain yet, so this page states no price. 06 Chemistry ## Chemistry and structure Molecular mass 230.26 g/mol (C14H14O3; PubChem CID 837). Naturally occurring form is the (+)-enantiomer. Half-life Not firmly established for isolated kavain in humans. Kavalactones are lipophilic and rapidly absorbed, with subjective effects generally lasting a few hours. Limited pharmacokinetic data preclude a precise elimination half-life. 07 Related ## Related to Kavain ### In the same category - 9-Me-BC (9-Methyl-β-carboline)Preclinical 9-Methyl--carboline (9-Me-BC) is a synthetic -carboline alkaloid that has drawn nootropic-community interest for a preclinical property that is genuinely unusual among -carbolines: in rodent and cell-culture studies it appears to stimulate the dopaminergic phenotype - raising tyrosine hydroxylase, the number of differentiated dopamine neurons and dopamine content - while also showing neuroprotective, neurorestorative and anti-inflammatory effects, plus in-vitro MAO-A/MAO-B inhibition [PMID:17913302, PMID:20374418, PMID:32285253].: https://www.bodyhackguide.co/compound/9-mbc - AniracetamApproved Aniracetam is a pyrrolidinone in the racetam family, developed by Hoffmann-La Roche under the code Ro 13-5057.: https://www.bodyhackguide.co/compound/aniracetam - Bemethyl (bemitil)Approved Bemethyl, known in the Russian literature as bemitil and sold in the region under names including Metaprot, Bemactor and Antihot, is 2-ethylthiobenzimidazole, normally handled as the hydrobromide salt.: https://www.bodyhackguide.co/compound/bemethyl - BPAPPreclinical BPAP, or (-)-BPAP, is a synthetic benzofuran compound, (R)-(-)-1-(benzofuran-2-yl)-2-propylaminopentane, developed by Joseph Knoll's group at Semmelweis University in Budapest with Fujimoto Pharmaceutical Corporation of Osaka as a potential successor to selegiline (deprenyl).: https://www.bodyhackguide.co/compound/bpap - BromantaneRussia Approved Bromantane is an atypical psychostimulant and anxiolytic developed in the 1980s at the Zakusov Institute of Pharmacology of the Russian Academy of Medical Sciences, originally created as an adaptogen for Soviet military and elite athletic use and later approved in Russia for the treatment of neurasthenic and asthenic disorders under the trade name Ladasten.: https://www.bodyhackguide.co/compound/bromantane - CaffeineApproved Caffeine (1,3,7-trimethylxanthine) is a natural methylxanthine alkaloid found in the seeds, fruits, leaves, and bark of over 60 plant species — most notably Coffea (coffee), Camellia sinensis (tea), Theobroma cacao (cacao), Paullinia cupana (guaraná), Ilex paraguariensis (yerba mate), and Cola acuminata (kola nut).: https://www.bodyhackguide.co/compound/caffeine All compounds (https://www.bodyhackguide.co/wiki) ### Compare Kavain - Alternatives to Kavain: https://www.bodyhackguide.co/alternatives-to/kavain ### Research tools - Peptide Calculator Reconstitution and syringe units: https://www.bodyhackguide.co/tools/reconstitution - Reconstitution Guide How to mix, step by step: https://www.bodyhackguide.co/guides/how-to-reconstitute-peptides - Nasal Spray Calc mL per actuation: https://www.bodyhackguide.co/tools/intranasal - Half-Life Visualizer Decay curves: https://www.bodyhackguide.co/tools/halflife All articles (https://www.bodyhackguide.co/blog) 08 Questions ## Frequently asked questions Is kavain the same thing as kava? No. Kava is the whole Piper methysticum root and its extract, which contains at least six major kavalactones. Kavain is the single most abundant of those kavalactones and the main driver of kava's calming effect. Most human trials used standardized whole extract, not isolated kavain [PMID:23635869][PMID:19430766]. How does kavain calm anxiety? It positively modulates GABA-A receptors without acting on the benzodiazepine site [PMID:27332705], and it blunts neuronal excitability by inhibiting voltage-gated Na+ channels and L-type Ca2+ channels [PMID:9690349][PMID:11642654]. Is kavain addictive like benzodiazepines? Kavain works outside the benzodiazepine site and has a low physical-dependence profile compared with benzodiazepines [PMID:27332705], but it can still impair coordination and cause next-day grogginess with frequent use. It is not a benzodiazepine substitute and should not be combined with one. Is kavain safe for the liver? Kava/kavain carries a real but idiosyncratic hepatotoxicity risk. Short controlled trials of standardized extract showed no liver-enzyme changes [PMID:23635869], but clinical and systematic reviews document cases of serious liver injury linked to high dose, long duration, poor material quality, alcohol and co-medication [PMID:20720265][PMID:27092496][PMID:34307603]. Avoid alcohol, get baseline and periodic liver labs, and stop at any sign of liver trouble. How much kavain do people take? Isolated-kavain supplements are typically 50-100 mg per dose; controlled kava trials delivered 120-250 mg total kavalactones per day [PMID:23635869][PMID:19430766]. There is no validated dose for isolated kavain - start low, keep it time-limited, and do not exceed the kavalactone range used in trials without medical guidance. Can I take kavain with my medications? Be cautious. Avoid alcohol and other CNS depressants (benzodiazepines, opioids, Z-drugs), avoid combining with hepatotoxic drugs, and avoid with dopaminergic/Parkinson's medications due to kava's D2 antagonism [PMID:11458444]. Kavalactones can also inhibit liver CYP450 enzymes and raise levels of other drugs - check with a pharmacist or physician first. Is kavain legal or approved? It is not FDA-approved as a drug. It is sold as a supplement/RUO material in some regions, while whole-kava products are banned or restricted in several countries over liver concerns. Isolated D,L-kavain was once a prescription anxiolytic in Germany and was later withdrawn. Research use only. Related ## Articles on Kavain - Can Nootropics Replace Alcohol? The Social Confidence Stack Guide nootropics, 3 April 2026: https://www.bodyhackguide.co/blog/nootropics-replace-alcohol-social-confidence - The Biohacker's Complete Nootropic Stack Guide nootropics, 1 April 2026: https://www.bodyhackguide.co/blog/complete-nootropic-stack-guide - Best Nootropics for Sleep: A 2026 Research Guide brain-health, 1 April 2026: https://www.bodyhackguide.co/blog/best-nootropics-for-sleep Free 2026 Peptide Cheat Sheet (PDF) 38 compounds and blends: vial sizes, BAC water volumes, dosing ranges and bloodwork markers. Download Free (https://www.bodyhackguide.co/guides/peptide-cheat-sheet-download) BodyHackGuide (https://www.bodyhackguide.co/) Your biohacking research hub: compound pricing, brain health protocols, dosing tools, and vendor reviews. support@bodyhackguide.co Join our Discord: https://discord.gg/Mhq5UdRYBA r/BodyHackGuide on Reddit: https://reddit.com/r/BodyHackGuide **Affiliate Disclosure:** We rank every vendor on the same public, reproducible methodology (https://www.bodyhackguide.co/vendors/methodology). Full details in our affiliate disclosure (https://www.bodyhackguide.co/affiliate-disclosure). **Research Disclaimer:** All compounds listed are for laboratory and research purposes only. Not for human consumption. This site does not sell or ship any products. Always consult a qualified healthcare professional and comply with local regulations. © 2026 BodyHackGuide. All rights reserved. - Terms: https://www.bodyhackguide.co/terms - Privacy: https://www.bodyhackguide.co/privacy ## Structured data ```json [ { "@context": "https://schema.org", "@type": "BreadcrumbList", "itemListElement": [ { "@type": "ListItem", "position": 1, "name": "Home", "item": "https://www.bodyhackguide.co/" }, { "@type": "ListItem", "position": 2, "name": "Compounds", "item": "https://www.bodyhackguide.co/compare" }, { "@type": "ListItem", "position": 3, "name": "Kavain" } ] }, { "@context": "https://schema.org", "@type": "MedicalWebPage", "name": "Kavain", "description": "Kavain (kawain) is the principal kavalactone in kava (Piper methysticum) and the main compound behind kava's calming, anxiolytic effect. It positively modulates GABA-A receptors outside the benzodiazepine site and dampens voltage-gated Na+ and L-type Ca2+ channels. Sold as a research-use-only / supplement material in some regions; it carries a documented but idiosyncratic liver-injury risk. 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Earlier radioligand work showed (+)-kavain enhances GABA-A binding without engaging the benzodiazepine site [PMID:9776662]. Voltage-gated Na+ channel blockade: Kavain non-competitively inhibits batrachotoxin binding to receptor site 2 of voltage-gated Na+ channels, reducing neuronal excitability [PMID:9690349]. Ca2+ and K+ channel effects: In hippocampal and dorsal-root-ganglion recordings, kavain shows weak Na+ antagonism, pronounced L-type Ca2+ channel antagonism, and positive modulation of the early K+ outward current - a pattern overlapping with mood-stabiliser drugs such as lamotrigine [PMID:11642654]. Broader CNS receptor activity: Kavain-containing kava extracts also interact in vitro with dopamine D2, opioid (mu/delta) and histamine receptors, which may shape the overall subjective profile [PMID:11458444]. 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