Betahistine Hydrochloride Injection is usually infused for 5 to 7 days, please follow your doctor’s instructions. Betahistine Hydrochloride Injection is an H1 receptor agonist, which can dilate blood vessels, and its effect on the vertebral base artery system is more significant, and improve the blood supply and circulation of the heart and brain; it can increase the cochlea and vestibular blood flow, and alleviate tinnitus and occlusal sensation; and it can also increase the vascular permeability and other effects. It is commonly used in the treatment of Meniere’s syndrome, benign positional vertigo and other diseases. Betahistine Hydrochloride Injection usually needs to be infused for 5 to 7 days to gradually achieve the therapeutic effect. This drug is effective for vertigo with ear discomfort, and the treatment time can be extended appropriately for those whose vertigo condition is prone to recurrence. If the treatment effect of Betahistine Hydrochloride Injection is poor, it is recommended to find out the cause of the disease and combine with other medicines to improve the circulation on the one hand. Occasionally, there are adverse reactions such as stomach discomfort, dry mouth, palpitation (rapid heartbeat, often accompanied by panic), itching of the skin. The use of this drug is prohibited in children, people who are allergic to the drug, asthma, patients with pheochromocytoma. Betahistine hydrochloride is available in tablets, oral solution and other dosage forms in addition to injections, and can be taken orally for treatment if infusion is not convenient. Specific medication and course of treatment need to follow the doctor’s instructions.