Ativan (lorazepam) is a benzodiazepine medication used to treat anxiety, insomnia, and seizures. It is also sometimes used to treat muscle spasms and alcohol withdrawal. Ativan can help you fall asleep faster, however, it is important to discuss its use with your doctor to make sure it is medically appropriate for you. Common side effects of Ativan may include drowsiness, fatigue, dizziness, blurred vision, and memory problems, which may make it more difficult to stay awake.