There is no set time for how long to take betahistine mesylate, and the medication can be discontinued when the symptoms of dizziness or vertigo are relieved. Betahistine Mesylate is mainly used for Meniere’s disease, vertigo, the accompanying symptoms of vertigo and dizziness. If the drug is taken after a long period of time, gastrointestinal reactions, such as nausea and vomiting, may occur. Adjusting the medication according to the changes in the condition cannot be generalized. When the condition stabilizes, the drug should be appropriately reduced and discontinued. It should be used with caution in patients with a previous history of peptic ulcer. This product has histamine-like effect, which will affect the contraction of the respiratory tract, so patients with previous bronchial asthma should also be used with caution. Elderly patients need to reduce the dosage of the drug due to reduced metabolic function.