Kava Facts
Depressant;
Description
Kava (Piper methysticum G.Forst., Piperaceae) is a Pacific Island root beverage prized for its calming and muscle-relaxing properties. Its dominant active constituent, kavain, is a kavalactone — a family of compounds chemically distinct from opioids and benzodiazepines.[1][2] Kavain amplifies the brain's main inhibitory signal, producing relaxation without the memory suppression typical of benzodiazepines.[3]
Subjective effects include anxiolysis, skeletal muscle relaxation, mild euphoria, sociability enhancement, and a distinctive perioral numbness. Traditional aqueous preparations from noble cultivars produce a clear-headed, sociable calm — lighter than alcohol and without the cognitive fog of benzodiazepines.
Dependence risk at moderate doses is low; one severe withdrawal case has been documented after heavy combined kava and kratom use.[4] The primary danger is liver injury — approximately 100 cases globally, most linked to organic solvent extracts and non-noble cultivars — and combining kava with benzodiazepines carries potentially life-threatening sedation risk.[5][6]
Dose and duration
No dose or duration recorded for any route.
Body and dependence
- Acute toxicity
- Low
- Chronic toxicity
- Moderate
- Physical dependence
- Low
- Psychological dependence
- Low
- Withdrawal
- Severe · medical supervision
- Compulsive redosing
- Low
Tolerance
- Builds
- None
- Fully resets after
- Not recorded
- Carries over to
- benzodiazepines;
alcohol
Effectslikely at a common dose
- Perception
- none likely · 5 possible, including Spatial disorientation, Vestibular distortion
- Body
- Muscle relaxation;
Tingling / electric sensations; +10 possible, including Motor control impairment, Dizziness, Nausea - Thinking
- none likely · 7 possible, including Cognitive impairment, Decision impairment, Information processing suppression
- Feeling
- Anxiety suppression;
+1 possible
Who shouldn't take it
Combinations60 recorded
Seek help immediately if
No emergency profile is recorded for this substance. Not recorded never means no risk.
988 Suicide & Crisis LifelineFireside Project: 62-FIRESIDE
References
- [1]^Singh YN, Singh NN (2002) Therapeutic potential of kava in the treatment of anxiety disorders — CNS Drugs PMID:12383029
- [2]^Bian T, Corral P, Wang Y, Botello J, Kingston R, Daniels T, Salloum RG, Johnston E, Huo Z, Lu J, Liu AC, Xing C (2020) Kava as a Clinical Nutrient: Promises and Challenges — Nutrients doi:10.3390/nu12103044
- [3]^Chua HC, Christensen ET, Hoestgaard-Jensen K, et al. (2016) Kavain, the Major Constituent of the Anxiolytic Kava Extract, Potentiates GABAA Receptors: Functional Characteristics and Molecular Mechanism — PloS One doi:10.1371/journal.pone.0157700
- [4]^Bleifuss W, Boley S, Bardwell J, Goebel C, Wilkinson J (2025) Severe kava withdrawal managed with phenobarbital — American Journal of Emergency Medicine doi:10.1016/j.ajem.2025.06.016
- [5]^Pantano F, Tittarelli R, Mannocchi G, et al. (2016) Hepatotoxicity Induced by the 3Ks: Kava, Kratom and Khat — International Journal of Molecular Sciences doi:10.3390/ijms17040580
- [6]^Almeida JC, Grimsley EW (1996) Coma from the health food store: interaction between kava and alprazolam — Annals of Internal Medicine PMID:8967683