Answer
Betahistine is contraindicated in people with phaeochromocytoma because, as a synthetic histamine analogue, it may trigger catecholamine release from the tumour, resulting in severe hypertension.
Sources for this answer
- Betahistine 8 mg tabletsAurobindo Pharma - Milpharm Ltd. · emc · SmPC §4.3 Contraindications · Version 8Document updated
Sources checked