Because there is a theoretical basis that these effects may be additive, use of ergotamine-containing or ergot-type medications (like dihydroergotamine or methysergide) and AXERT within 24 hours of each other should be avoided.
<ergotamine, advise, AXERT>, <ergot-type medications, advise, AXERT>, <dihydroergotamine, advise, AXERT>, <methysergide, advise, AXERT>