Objective To observe the curative effect and change of plasma levels of brain natriuretic peptides (BNP) and C-response protein (CRP) in patients with unstable angina.

Methods 118 patients with unstable angina were divided randomly into two groups, one was control group treated with regular treatment, and another was treatment group treated with danhong injection on the basis of above regular treatment. All the patients were followed up for fourteen days and observed the changes of the clinical symptoms, change of plasma levels of BNP and CRP.

Results After danhong injection treatment, the curative effect was better in treatment group than control group (p<0.01), BNP and CRP plasma levels both decreased significantly (p<0.01). In treatment group, BNP and CRP plasma levels more decreased significantly (p<0.05).

Conclusion Danhong injection can be the effective drug used in clinic for treating unstable angina.