Answer
Starting fingolimod hydrochloride in a patient taking verapamil can cause additive heart-rate slowing, potentially resulting in severe bradycardia and heart block.
Sources for this answer
- Gilenya 0.25mg and 0.5mg hard capsulesNovartis Pharmaceuticals UK Ltd · emc · SmPC §4.4 Special warnings and precautions for use · Version 37Document updated
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