Subcutaneous and intramuscular injections are generally more effective than the nasal spray and can be self-administered by patients. Intravenous injection is considered very effective for severe migraine or status migrainosus.<unk>  is also used in the treatment of medication overuse headache.
Dihydroergotamine
Allergan
Dicycloverine
Piperoxan
Ergotamine
Oxymetazoline
Metergoline
Betahistine