Western medicine nitroglycerin drugs have great side effects such as blushing, headache, palpitation, hypotension, etc. It is suggested to choose Chinese patent medicine, which has the same effect as nitroglycerin drugs, but the side effects are very light.

Shexiang Baoxin Pill is a typical modern Chinese patent medicine, which can immediately relieve the symptoms of angina pectoris and cardiac insufficiency. It takes effect in 30 seconds at the earliest, and the curative effect is remarkable. Large-scale clinical trials in multi-centers have proved that the effect in first aid is the same as that of isosorbide dinitrate, and the side effects are extremely low. Long-term use can also fundamentally improve the blood supply of myocardium.