Depending on the individual’s constitution, the onset of action of Heart Rescue Pills may vary. Generally speaking, the symptoms of chest tightness and chest pain will be relieved in 3 to 5 minutes after use, while some patients may need 10 to 15 minutes. Heart-Saving Pill belongs to the category of proprietary Chinese medicines, and the main ingredients are ice tablet and chuanxiong rhizome. It can promote qi and blood circulation, remove blood stasis and relieve pain, increase coronary blood flow and relieve angina pectoris, clinically, it is commonly used in the treatment of coronary heart disease and angina pectoris. The use of heart pills because it is not swallowed, the drug does not have the process of digestion and absorption in the digestive tract, but is directly absorbed into the blood through the sublingual vein, so the onset of action is fast, and does not pass through the liver, there is no first-pass elimination of the liver, and the bioavailability is also higher. It should be noted that it is contraindicated in pregnant women and those who are allergic to the components of the drug. Use with caution in patients with myocardial ischemia with moderate to severe heart failure. If the angina attack is not relieved after taking the drug, you should go to the hospital immediately to avoid delays.