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. 32%, 14. 43%, 14. 56% in the finished product respectively.

Conclusion: should be concentrate and desiccation in the condition that decompress and low temperature.

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