Flunarizine: What it Does and How to Use It

Ever tried a migraine drug that helps stop attacks but can change your mood or movement? That’s flunarizine. People use it mainly to prevent migraines and to treat some balance or vertigo problems. It’s not for sudden relief of a headache—think of it as a monthly shield, not a rescue pill.

Flunarizine works by blocking certain calcium channels and by acting like a mild antihistamine. That calm-down effect on the brain helps reduce how often migraines happen for many people. Expect a few weeks before you notice benefit—usually two to six weeks for steady improvement.

Typical dose and how to take it

Doctors commonly start with 5 mg at night. If needed, they raise it to 10 mg. Taking it at bedtime helps with drowsiness. Use it every day as prescribed. Stopping suddenly can cause issues, so ask your doctor how to taper off if needed.

Keep a simple headache diary for a month or two. Track attack frequency, severity, and any new symptoms like sleep changes or slowed movement. That record helps your clinician see if flunarizine is working or causing problems.

Side effects, risks and who should avoid it

Common side effects are drowsiness, weight gain, and increased appetite. These often show up in the first weeks. More serious but less common problems include depression, slowed movements, tremor, or symptoms that look like Parkinson’s disease. Older adults are more likely to get movement issues.

Avoid flunarizine if you have Parkinson’s disease or a history of severe depression. Tell your doctor right away about mood changes, new tremors, stiffness, or trouble walking. If these appear, stopping the drug usually improves the symptoms, but don’t stop on your own—get medical advice.

Be careful with other sedatives, alcohol, or drugs that can cause movement problems (some antipsychotics). These combinations can raise the risk of drowsiness or movement side effects. Always list all medicines and supplements to your prescriber.

Pregnancy and breastfeeding need a chat with your doctor. Many clinicians avoid flunarizine in pregnancy unless benefits clearly outweigh risks. Breastfeeding safety is unclear, so plan with your healthcare provider.

Practical tips: start low, give it time, and check mood and movement regularly. If weight gain is a problem, watch calories and stay active. If you travel or drive, be ready for drowsiness until you know how the drug affects you.

Want to know if flunarizine suits you? Ask about alternatives, expected benefits after 1–3 months, and a clear plan to stop if side effects show up. That short conversation can keep treatment useful and safe.