Flunarizine

Migraine preventer
PRESCRIPTION ONLY IN INDIA

Flunarizine is a migraine preventer found in 1 medicine sold in India, such as Sibelium 10. Below: what it is for, how it works, how to take it, side effects, interactions and pregnancy advice.

What it is used for

Reduces how often migraines happen; also used for vertigo.

How it works

A calcium channel blocker used to prevent migraines and for vertigo.

How to take it

Usually 5 to 10 mg at night. Reviewed after 2 to 3 months.

Common side effects

  • Drowsiness
  • Weight gain
  • Tiredness

Get medical help straight away if

  • Low mood
  • Tremor or stiffness (stop the medicine)

Be careful

Can cause drowsiness, weight gain or low mood.

Other medicines and interactions

More drowsiness with alcohol and sedatives.

Pregnancy and breastfeeding

Not recommended in pregnancy or while breastfeeding.

Brands of Flunarizine (1)

Sibelium 10

Common questions

What is Flunarizine used for?

Reduces how often migraines happen; also used for vertigo.

How does Flunarizine work?

A calcium channel blocker used to prevent migraines and for vertigo.

How should I take Flunarizine?

Usually 5 to 10 mg at night. Reviewed after 2 to 3 months.

What are the side effects of Flunarizine?

Common: Drowsiness, weight gain, tiredness. Get help straight away for: Low mood, tremor or stiffness (stop the medicine).

Does Flunarizine interact with other medicines?

More drowsiness with alcohol and sedatives.

Is Flunarizine safe in pregnancy and breastfeeding?

Not recommended in pregnancy or while breastfeeding.

Does Flunarizine need a prescription in India?

Yes. In India it is a prescription (Schedule H) medicine, so a pharmacist should sell it only with a doctor's prescription.

Which brands contain Flunarizine?

Sibelium 10.

Sources and further reading

NHS (UK National Health Service) and MedlinePlus (US National Library of Medicine) are free, reviewed medicine guides. Brand names and doses there may differ from India.

Last reviewed 31 October 2026. Written by Satya Babu from standard prescribing information.

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For information only, not medical advice. This page is a plain-language summary written from standard prescribing information and the public guides linked below. Brands sometimes change their formula, so always check the composition printed on the pack. Doses here are typical adult doses; yours may differ. Do not start, stop or change a medicine without your doctor or pharmacist, and keep all medicines away from children. In an emergency, call 112 (India) or your local emergency number.