Abstract: A new galenical form of administration of betahistine and its derivatives, its preparation method and pharmaceutical products containing this new galenical form.

Abstract: There is provided a medicament in a form having surprising effectiveness against vertigo in Meniere's syndrome. This medicament comprises, as active ingredient, betahistinemethanesulfonate. The medicament further comprises a core of pharmaceutially acceptable thereapeutically inert carrier material having the active ingredient absorbed thereon, said active ingredient being covered with a dialysis membrane said membrane further carrying a second layer of active ingredient which, if desired, is itself absorbed upon a layer of therapeutically inert carrier material and is covered with a further dialysis membrane. There may be utilized a plurality of substantially concentric layers of active material suitably absorbed on the carrier, and covered with a dialysis membrane to provide a long-acting medicament form.