Journal of ethnopharmacology
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Randomized Controlled Trial
Effects of So-cheong-ryong-tang and Yeon-gyo-pae-dok-san on the common cold: randomized, double blind, placebo controlled trial.
So-cheong-ryong-tang (SCRT) and Yeon-gyo-pae-dok-san (YPS) extracts are widely used in treatment of the common cold. The purpose of this study is to evaluate the efficacy of SCRT and YPS on the common cold. ⋯ SCRT and YPS have beneficial, albeit limited, effects on common cold patients, especially those with the Wind-cold pattern cold.