Lidocaine Hydrochloride effects are excitation and inhibition of the central nervous system, etc. This product is a local anesthetic and should be used under medical supervision. Lidocaine hydrochloride is commonly used as an injection. It is an amide local anesthetic. It can excite and inhibit the central nervous system, can be analgesic, anticonvulsant, reduce myocardial autoregulation, anti-ventricular arrhythmia, slow down cardiac conduction velocity, inhibit myocardial contractility, so that the cardiac blood volume decreased. Lidocaine hydrochloride is used for infiltration anesthesia, surface anesthesia, epidural anesthesia and nerve conduction block. It is also used for (after acute myocardial infarction) ventricular premature beats or ventricular tachycardia, ventricular arrhythmias due to (cardiac surgery, etc.), and digitalis intoxication. Adverse effects of this product include abnormal sensation, convulsive coma, drowsiness, muscle tremor, respiratory depression. It is prohibited for those who are allergic to local anesthetics. Patients should use the drug reasonably under the guidance of a doctor to avoid adverse consequences.