Dopamine antagonists may reduce bromocriptine efficacy; bromocriptine may reduce effectiveness of dopamine antagonists. Concurrent use is not recommended.
Ergot drugs (eg, ergotamine)
Coadministration may increase occurrence of ergot-related side effects (eg, fatigue, nausea, vomiting) and may reduce effectiveness of ergot drugs when used to treat migraines. Concomitant use is not recommended.