A kampo (traditional Japanese herbal medicine) made from four herbs: Huang Lian (Coptidis Rhizoma), Huang Qin (Scutellariae Radix), Zhi Zi (Gardeniae Fructus) and Huang Bai (Cortex Phellodendri) was found to be significantly more effective than placebo in controlling hypertension symptoms in a double-blind, placebo-controlled trial.

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Categories: Hypertension

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