Are Modern Preparation Methods Compromising the Efficacy of Chinese Herbal Medicines? An Investigation Using Guan Ye Lian Qiao (Hypericum Perforatum L.)
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Using High Performance Liquid Chromatography (HPLC) and coupled techniques a comparison was made of
the compounds found in Guan Ye Lian Qiao (Hypericum perforatum L.) when prepared as a raw herb decoction, tincture and concentrated powder tea.
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