The effects of epinephrine hydrochloride injection mainly include two categories of effects on the heart and the lungs: First, the effect on the heart, can excite the heart, causing an increase in heart rate and a strong heartbeat, because it can excite alpha receptors and beta1 receptors, especially for patients with a slow heartbeat and poor heart function application, this drug is more effective. Second, epinephrine also often has the role of excitation of β2 receptors, can be used in the treatment of critical asthma, with obvious antispasmodic, asthma, but the application of asthma treatment should pay attention to whether the patient has heart-related diseases. If you have heart disease, it is best not to use this drug because it can significantly excite the heart and cause complications such as palpitations and tachycardia.