Each white, scored, oblong tablet, engraved with Ativan on one side and 1 on the other side, contains lorazepam 1 mg. Nonmedicinal ingredients: lactose. Lorazepam, sold under the brand name Ativan among others, is a benzodiazepine medication. Common side effects include weakness, sleepiness, low blood pressure, and a decreased effort to breathe. .. inactive glucuronide form) and by its high relative potency (lorazepam 1 mg is equal in effect to diazepam 10 mg). Nov 16, - Know Ativan 1 MG Tablet uses, side effects, dosage, contraindications, substitutes, benefit, interactions, purpose, drug interactions, precautions.