May be antagonized by concomitant (within 30 minutes) sumatriptan nasal spray. Sedation, dizziness, nasal congestion, insomnia, GI upset, respiratory depression, sweating, hypo- or hypertension ...

Get detailed information on Butorphanol, including pronunciation ... Skin- Itching, sweating/clamminess, rash and hives. Eye and ENT- Nasal congestion, blurred vision, ear pain, inflammation ...