Piper methysticum Root and Rhizome Powder
DEFINITION
The article consists of the dried root and rhizome of Piper methysticum G. Forst (Family Piperaceae) reduced to powder or very fine powder. It contains NLT 4.5% of kavalactones, calculated as the sum of methysticin, dihydromethysticin, kawain, dihydrokawain, yangonin, and desmethoxyyangonin, on the dried basis.
POTENTIAL CONFOUNDING MATERIALS
Piper wichmannii C.DC.
Piper methysticum var. wichmannii (C.DC) Lebot.
CONSTITUENTS OF INTEREST
Kavalactones: Kawain (kavain), dihydrokawain, methysticin, dihydromethysticin, yangonin, and demethoxyyangonin
Chalconoides: Flavokavain A–C
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