Adult: Administer 2.5 mg. Dilute 0.5 ml of 0.5% solution for inhalation with 2.5 ml normal saline in nebulizer and administer over 10-15 minutes. MDI: 1-2 inhalations (90-180 mcg). Five minutes between inhalations.
Pediatric: Administer solution of 0.01-0.03 ml (0.05-0.15 mg/kg/dose diluted in 2 ml of 0.09% normal saline. May repeat every 20 minutes three times.
Duration of action
Onset: in 5-15 minutes with
Peak effect: in 30 minutes to 2 hours and
Duration: of 3-4 hours.
Pregnancy safety: Category C. Antagonized by beta blockers (eg, Inderal, Lopressor). May precipitate angina pectoris and arrhythmias. Should only be administered by inhalation methodology in prehospital management.