The main ingredients are Chuanxiong Ligusticum and Bing Pieces, among which Chuanxiong Ligusticum has the effect of moving qi and opening depression, activating blood circulation and relieving pain, while Bing Pieces has the effect of opening the body and waking up the mind, dispelling obscenities and resolving turbidity. Therefore, it has the functions of promoting the flow of Qi and blood, dispelling blood stasis and relieving pain, increasing coronary artery blood flow, relaxing vascular smooth muscle, anti-myocardial ischemia, protecting cardiomyocytes, inhibiting atheromatous artery formation, reducing blood viscosity and having significant antispasmodic and analgesic effects. It is mainly used clinically for coronary artery disease and angina pectoris of Qi stagnation and blood stasis. The use of quick-acting cardiac pills requires good timing and a normal method of administration in order to make them work and help relieve the condition. Patients should take 4-6 capsules once, 3 times a day when symptoms such as chest discomfort and brain congestion occur. For acute attacks, 10-15 capsules at a time. When a coronary heart patient has aura symptoms such as chest tightness and precordial discomfort, they should quickly take quick-acting heart pills, and should not wait for a typical angina attack before taking them. The initial dose should be small, generally 4 capsules, containing 5 minutes after the onset of effect. When the effect of the drug, there should be a bitter and spicy taste under the tongue and clear heart cool feeling. If the pain is not relieved after 10 minutes, you can take 4-6 capsules again as appropriate. If it does not work for 2-3 times, you should go to the hospital immediately. It is best to take a sitting position when containing. It is important to note that not every patient can take quick-acting heart pills, such as the weak spleen and stomach can not be commonly used, because of the cold nature of the ice chips component, the stomach and intestines stimulation, may appear stomach discomfort, diarrhea. Not all patients with “chest pain” are effective after taking them.