Efficacy of modified Banxia Xiexin decoction in the management of Wei-Pi syndrome (postprandial distress syndrome): study protocol for a randomized, waitlist-controlled trial.

Background: Postprandial distress syndrome manifests as a feeling of fullness and early satiation that can significantly reduce the quality of life of the patients. In Chinese medicine (CM), the syndrome is traditionally regarded as the Wei-Pi syndrome, and Banxia Xiexin decoction (BXD) has been used in the empirical treatment of the same for a long time. The current study aims to evaluate the efficacy of modified BXD in the management of Wei-Pi syndrome.