Dried rhizome and roots of piper methysticum, a shrub native to oceania and known for its anti-anxiety and sedative properties. Heavy usage results in some adverse effects. It contains alkaloids; lactones; kawain, methysticin, mucilage, starch, and yangonin. kava is also the name of the pungent beverage prepared from the plant's roots.


Symptoms and diagnosis

Symptoms:

    


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