治療頭暈 Vertigo cause by M？ni？re&rsquo's disease.

Betahistine is an analog of histamine with weak agonist properties at histamine H1 receptors and more potent anatgonistic effects at histamine H3 receptors.

Betahistine is rapidly absorbed following oral administration. Betahistine is converted to 2-pyridylacetic acid, presumably in the liver. The majority of a dose of betahistine is excreted in the urine as metabolites within 3 days of oral administration.

Phaeochromocytoma, Asthma,Gastric or duodenal ulcer.

Australian Drug Evaluation Committee's (ADEC) Category: B2.

Excretion in breast milk unknown/use caution

Headache (5%) , Nausea (2%), dyspepsia, Pruritus, Skin rash.

Adults: 24 mg twice daily. Administration with meals is recommended to avoid adverse gastrointestinal effects. Children: No dosage recommendations.