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Qingyanhou Heji is a Traditional Chinese Medicine (TCM) hospital preparation developed by Sun Yat-sen Memorial Hospital of Sun Yat-sen University. Formulated as an oral mixture (Heji), it is specifically indicated for the treatment of acute pharyngitis, particularly the 'wind-heat syndrome' in TCM typology. The preparation is designed to clear heat, detoxify, and soothe the throat. It has been evaluated in exploratory clinical trials (e.g., ChiCTR2600119212) to assess its efficacy and safety in relieving sore throat and other clinical symptoms compared to established TCM treatments like Lan Qin Oral Liquid.
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