Herbal Medicine for the Treatment of Arrhythmia

In traditional Chinese medicine, arrhythmias are categorized by the characteristic symptoms of palpitations and abnormal pulse. Numerous Chinese herbal medicines are identified to have antiarrhythmic effects, such as xin bao, ci zhu wan, bu xin dan, and several others. However, few clinical trials have been conducted to study their effects and safety. Xin bao is one agent that has begun to be examined. The mechanism of action of xin bao is thought to be through its stimulation and increased excitability of the sinuatrial node. In one observational study, the effects of xin bao were documented in 87 patients with sick sinus syndrome. Xin bao was administered orally 2 to 3 times per day for 2 months. Patients with major symptoms of sick sinus syndrome, which included dizziness, palpitations, and chest pressure, improved significantly after treatment. No serious adverse effects were noted. This study suggests a possible role of xin bao in the treatment of sick sinus syndrome. However, more scientific research on xin bao and other antiarrhythmic Chinese herbs mentioned previously are necessary before any recommendations can be made for their routine use in patients with sick sinus syndrome or other arrhythmias.