Betahistine
Also sold as: Serc, Vertin
Prescription neededParkinson's, dizziness and migraine
Comes as:Tablet
Usual adult dose
Usual adult dose: 8 mg to 16 mg three times a day with food (no more than 48 mg a day).
Your doctor may give you a different dose. Children's doses depend on weight.
Side effects
Common
- mild stomach upset
- headache
- bloating
Serious — get help
Stop taking it and see a doctor straight away if you notice:
- severe allergic reaction (swelling of face or throat)
- severe skin rash
Do not take it, or take care, if
- Phaeochromocytoma (a rare adrenal tumour)
- Asthma (use with caution)
- Active stomach ulcer (use with caution)
- Pregnancy and breastfeeding (ask your doctor)
Interactions
Medicines that can react with this one.
Minor1 medicineUsually not a problem, but tell your doctor.
- Chlorphenamine
Antihistamines may reduce the effect of betahistine.