Betahistine Hydrochloride Sodium Injection is a vasodilator drug, which can improve blood circulation and relieve tinnitus, postural vertigo and other symptoms. The main active ingredient of Betahistine Hydrochloride Sodium Chloride is Betahistine Hydrochloride, which can dilate cerebral blood vessels, cardiovascular vessels, especially the vertebral base artery system after the drug is used, so it has the effect of significantly increasing the blood flow of the heart, brain, and peripheral circulation, and lowering the systemic blood pressure. At the same time, due to its ability to increase the blood flow to the cochlea and vestibule, it can reduce the symptoms of inner ear vertigo, tinnitus, and sense of ear closure. This drug is mainly indicated for the treatment of Meniere’s disease syndrome and postural vertigo as well as tinnitus symptoms caused by arteriosclerosis, hypertension and other diseases. The drug is contraindicated in people who are allergic to the product, patients with active gastric ulcers, pheochromocytoma. Adverse reactions such as dry mouth, loss of appetite, palpitations, itching of the skin, rashes, aggravation of peptic ulcers, dizziness, headache may occur after the use of the drug. It is recommended to consult a medical professional for standardized treatment before using the drug.