This symptom of your father is suitable for taking Shen Song Yangxin Capsule to prevent and treat. Shen Song Yangxin Capsule has the characteristics of "treating both symptoms and root causes slowly", which can not only block cardiac multi-ion channels, regulate cardiac autonomic nerves and treat various tachyarrhythmia, but also enhance cardiac pacing current and improve cardiac conduction function, so it can also treat bradyarrhythmia. By regulating the autonomic nervous function of the heart, the blood supply to the myocardium is improved, and the symptoms such as insomnia, palpitation, shortness of breath and fatigue caused by various arrhythmia are eliminated.