Flunarizine(Sibelium) generic is a calcium channel blocker, prescribed for migraine occlusive peripheral vascular disease, vertigo of central and peripheral origin and as an adjuvant in the ... Know everything about Sibelium 10mg Tablet including its uses, benefits, dosage, and side effects. Compare prices and find affordable substitutes online at Zeelab Pharmacy. Sibelium tablet is used to prevent migraines. It contains flunarizine as an active ingredient. It should be taken as directed by the doctor, in doses, and for a duration as prescribed. Sibelium 10 MG Tablet is a drug that is used to prevent migraine attacks. It is used to lower the frequency of the attacks and in some instances the severity. However, it should be noted that Sibelium 10 MG Tablet should not be used for the treatment of an already occurring acute migraine attack.