ROUTE. ONSET. PEAK. DURATION. Inhaln. 1 min unknown. 1 – 3 hr. Subcut Lactation: High intravenous doses of epinephrine mightpmilk production or let- . caclium, lidocaine, linezolid, lorazepam, magnesium sulfate, mannitol, mechlor-. lorazepam. Apo-Lorazepam ◇, Ativan, Novo-Lorazem ◇ Adults: Initially, 2 to 3 mg P.O. daily in two to three divided doses. Route, Onset, Peak, medicalcases.eug: epinephrine. Medscape - Indication-specific dosing for Versed (midazolam), frequency-based Has twice the affinity for benzodiazepine receptors that diazepam has.