Betahistine Hydrochloride Injection is used for the treatment of inner ear vertigo, as well as for the treatment of postural vertigo and tinnitus due to cerebral atherosclerosis, ischemic cerebrovascular disease and hypertension. This drug increases cochlear and vestibular blood flow, thus eliminating inner ear vertigo, tinnitus and ear closure. It has a more pronounced dilating effect on cerebral and cardiovascular vessels, especially on the vertebral base arterial system, significantly increases blood flow to the heart, brain and peripheral circulation, improves blood circulation and lowers systemic blood pressure. The use of this drug may cause dry mouth, loss of appetite, stomach upset, palpitations (rapid heartbeat, often accompanied by panic), skin itching and other adverse reactions, it is recommended to stop the drug in time and seek medical attention. Pregnant women should be cautious, patients who are allergic to this drug and children need to be prohibited. In addition, it is recommended that patients use Betahistine Hydrochloride Injection under the guidance of a doctor, and should not use it privately.