[Investigate into of effective constituent transference of herba Ephedrae and cortex Magnoliae officinalis in preparation course of Shujin Kechuan capsule].

Objective: Investigate into transport rate and retention rate transference of principal effective constituent in Shujin Kechuang capsule, a new development Chinese patent medicine for theraphy asthma.

Method: HPLC was applied to analyze the content of ephedrine hydrochloride and honokiol and magnolol in crude drugs and 60% ethanol extracting solution and 25% concentrated solution,50% concentrated solution, 100% concentrated solution and finished product ( Shujin Kechuang capsule).

Result: The transport rate of ephedrine hydrochloride and honokiol and magnolol is 56.