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). Mar 31, - Lorazepam and Xanax are both benzodiazepines that provide a tranquilizing Uses; Side effects; Dosage; Interactions; Warning; Takeaway. This information is intended for use by health professionals. 1. Name of Lorazepam 1mg Tablets contain 1mg of the active ingredient lorazepam. Lorazepam.