Conclusion: Changkang capsule possesses the effect of antispastic, analgesia and anti-diarrhea related to the therapeutic effects on diarrhoea -predominant Irritable bowel syndrome.

Methords:To adopt the method of separating alcohol from water and the technique of intestine-dissolvable coatings.

Objective:To observe the effect of Western drugs combined with traditional Chinese drug, KangXi capsule in treating unstable angina of coronary heart disease.