Detailed dosage guidelines and administration information for Ativan Tablets (lorazepam). Includes dose adjustments, warnings and precautions. Mar 10, - Learn about Ativan (Lorazepam) may treat, uses, dosage, side effects, drug interactions, warnings, patient labeling, reviews, and related ?Ativan (Lorazepam) · ?Side Effects · ?B.i.d. 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.