Tree peony root bark extract is extracted from China’ s national flower peony, the active ingredient of tree peony root bark extract is paeonol, which appear in white or light yellow crystallize powder with special smell and taste spicy. Paeonol can easily soluble in ethanol, methanol and hot water, insoluble in normal temperature water. Peony bark extract has composure, antipyretic, analgesia effects. It also has central inhibition effect.
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