Although it has been approved by FDA and declared a drug and is widely prescribed by the doctors and physicians and doctors to their patients having nervous disorders and anxiety. This drug performs its function by acting on the brain and nervous system. Its basic mode of action includes the amplification of the production of certain chemicals in the brain that as a result reduces anxiety and helps you feel peaceful and stress-free. Get relief from anxiety and nervous disorders with Ativan (lorazepam). Trust the FDA-approved drug.