It is important to note that Ativan is a prescription medication used to treat anxiety disorders, insomnia, seizures, alcohol withdrawal, and chemotherapy-induced nausea and vomiting. It belongs to the benzodiazepine class of drugs and works by enhancing the effects of a neurotransmitter in the brain called GABA, resulting in a calming effect. Ativan is available in tablet forms such as 1mg and 2mg.