Medscape - Anxiety, status epilepticus, sedation-specific dosing for Ativan, Lorazepam Intensol (lorazepam), frequency-based adverse effects, comprehensive. Mar 17, - Lorazepam may be habit-forming, so do not take higher doses of the medication or use it for a longer time than your doctor recommends. Some. ATIVAN INJECTION (Lorazepam) drug information & product resources from is desired; >50yrs: max IV dose of mg/kg or 2mg total, whichever is lower.