Ativan is accessible in a generic form called Lorazepam. Generic drugs are often less costly than the brand-name version. Generally, the brand-name drug and the general version may be accessible in different forms and strengths.rnThis medication is sometimes used off-label for the short-term treatment of symptoms of vertigo. These symptoms involve vomiting and nausea. In some cases, other medicines with Ativan may be used for this purpose. It is thought that lorazepam works by enhancing the activity of certain neurotransmitters in the brain.