Shen Song Yangxin Capsule has the effects of benefiting qi and nourishing yin, promoting blood circulation and dredging collaterals, clearing away heart fire and calming nerves. It has a good therapeutic effect on both rapid arrhythmia and slow arrhythmia. Shen Song Yangxin Capsule can also be used to treat coronary heart disease, ventricular premature beats (deficiency of both qi and yin) and clinical symptoms such as palpitation, shortness of breath, fatigue (aggravated exercise), insomnia and dreaminess, night sweats, mental fatigue and mental burnout.