Answer
Naratriptan must not be taken together with ergotamine because of a theoretical increased risk of coronary vasospasm, and at least 24 hours must separate their administration in either order.
Sources for this answer
- Naratriptan 2.5 mg film coated tabletsMorningside Healthcare Ltd · emc · SmPC §4.5 Interaction with other medicinal products · Version 1Document updated
Sources checked