Efficacy and safety of Chinese herbal medicine Wenxin Keli for ventricular premature be ats: A systematic review

•Wenxin Keli might be beneficial to reduce ventricular premature beats’ numbers and relieve symptoms.•Patients with numbers <360 beats/hour or with coronary heart disease may benefit the most of the Wenxin Keli.•Wenxin Keli, compared with Western medicine, might be associated with a reduced risk of proarrhythmic reactions.