Effectiveness of Shenshu Guanxin recipe granules for improving exercise tolerance in patients with stable angina pectoris: a randomized, double-blind, placebo-controlled trial.

Objective: To assess the effectivess of Shenshu Guanxin recipe granules (, SGR) in improving exercise tolerance and the quality of life in patients with Stable Angina Pectoris (SAP).

Methods: A total of 189 patients were consecutively enrolled between December 2012 and December 2014. The included patients were randomly assigned to SGR and placebo groups. The primary endpoints included mainly the results of treadmill exercise test and Seattle Angina Questionnaire (SAQ) during 12 weeks of treatment.

Results: After 12 weeks of treatment, SGR extended the time of exercise-induced ST-segment depression of 0.1 MV, lowered the maximum ST-segment depression, and shortened the duration of ST-segment depression in patients with SAP in southern China. Besides, the study also proved that SGR could improve the quality of life and functional status of patients with SAP.

Conclusions: SGR showed a positive effect on exercise tolerance compared with the placebo besides optimal medical therapy. Also, the study proved that SGR could improve the SAQ score of the patients.