<unk> (nasal) is an ergot that is FDA approved for the treatment of migraine headaches (with or without aura). There is a Black Box Warning for this drug as shown here.  Common adverse reactions include vasospasm, paraesthesia, hypertension, dizziness, anxiety, dyspnea, headache, flushing, diarrhea, rash, and pleural and retroperitoneal fibrosis.
Dihydroergotamine 
Dihydroergocryptine
Methylergonovine 
Oxymetazoline hydrochloride
Tramazoline
Oxymetazoline
Nitroxoline
Dolastetron 