^Uebelhack, R; Franke L; Schewe HL (September 1998). “Inhibition of platelet MAO-B by kava pyrone-enriched extract from Piper methysticum Forster (kava-kava)”. Pharmacopsychiatry31 (5): 187-192. doi:10.1055/s-2007-979325. PMID9832350.
^Baum, SS; Hill R; Rommelspacher H (October 1998). “Effect of kava extract and individual kavapyrones on neurotransmitter levels in the nucleus accumbens of rats”. Progress in Neuro-Psychopharmacology and Biological Psychiatry22 (7): 1105-1120. doi:10.1016/S0278-5846(98)00062-1. PMID9829291.
^Ma, Yuzhong; Karuna Sachdeva; Jirong Liu1; Michael Ford; Dongfang Yang; Ikhlas Khan; Clinton Chichester; Bingfang Yan (November 2004). “Desmethoxyyangonin and dihydromethysticin are two major pharmacological kavalactones with marked activity on the induction of CYP3A23”. Drug Metabolism and Disposition32 (11): 1317-1324. doi:10.1124/dmd.104.000786. PMID15282211.