Lopressor is an oral solution of betahistine hydrochloride, which is used to treat dizziness and vertigo. Betahistine Hydrochloride Oral Solution can be used to treat dizziness and vertigo caused by Meniere’s syndrome and cerebrovascular disease. Betahistine Hydrochloride Oral Liquid belongs to histamine drugs, which can improve the blood circulation of cerebrovascular, cardiovascular and vertebral artery systems, increase the blood flow of cardiovascular and cerebrovascular vessels, thus improving the dizziness and vertigo caused by ischemia and hypoxia. In addition, Betahistine Hydrochloride Oral Solution can also increase blood flow to the cochlea and vestibule, which also has a therapeutic effect on dizziness and vertigo caused by Meniere’s syndrome. Betahistine Hydrochloride Oral Solution needs to be used under medical supervision, not on its own.