Dried Tangerine Peel Classic Formulas

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Regulates Qi and relieves fullness - Chen Pi is a core herb for abdominal distension, bloating, chest oppression, and stagnation of the middle burner.
Dries dampness and strengthens digestive transformation - it is used when poor appetite, nausea, greasy obstruction, and sluggish digestion reflect dampness and weak Spleen transport.
Transforms phlegm and harmonizes the Lung - traditional use extends to cough, copious sputum, and phlegm-damp congestion, especially when digestion is also impaired.

Er Chen Tang - classic phlegm-damp formula in which Chen Pi regulates Qi and helps dry dampness while transforming phlegm.
Liu Jun Zi Tang - Chen Pi harmonizes the middle and helps prevent tonic ingredients from causing cloying stagnation.
Ping Wei San - uses Chen Pi to move Qi and support dampness transformation in fullness, poor appetite, and digestive obstruction.

Traditional materia medica describe Chen Pi as acrid, bitter, and warm, entering the Lung and Spleen to regulate Qi, dry dampness, and transform phlegm.
Its blend of aromatic movement and digestive support explains why Chen Pi appears in so many formulas that address both the gut and the chest.