Sho-seiryu-to (TJ-19) for asthma (Kampo)
Tradition: Kampo Medicine · Evidence: Established
A standardized Kampo formula for asthma and allergic rhinitis with clear watery mucus, often pediatric.
Sho-seiryu-to (TJ-19) contains Ma Huang, Gui Zhi, Shao Yao, Gan Cao, Xi Xin, Gan Jiang, Wu Wei Zi, and Ban Xia. Used for "external cold with internal water" patterns: wheezing or sneezing with copious clear runny secretions. Pediatric Japanese studies show benefit in seasonal allergic asthma flares.
Tradition context
Distinct from Saiboku-to: Sho-seiryu-to suits cold/watery patterns; Saiboku-to suits maintenance with anxiety overlay.
Preparation
Standardized granules.
Typical dosing
Adult: 7.5 g/day in 2-3 divided doses. Pediatric per practitioner.
Cautions
Contains Ma Huang — same cardiovascular and hypertension cautions. Long-term licorice caution.