Each white plain tablet contains 6 mg of betahistine mesilate.
(See Table 1.)
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Nonproprietary name: Betahistine Mesilate (JAN); Betahistine (INN).
Chemical name: N
Molecular formula: C8
Molecular weight: 328.41.
Betahistine mesilate occurs as white crystals or crystalline powder. It is very soluble in water, freely soluble in acetic acid (100) and sparingly soluble in ethanol (99.5). It is soluble in dilute hydrochloric acid. It is hygroscopic.
Melting point: 110~114°C (after desiccation).
It also contains hydrated silicon dioxide, microcrystalline cellulose, calcium stearate, talc,low substituted hydroxypropylcellulose and hydroxypropylcellulose as inactive ingredients.