Who should not take melatonin supplements?
Since the safety of melatonin use during pregnancy has not been adequately studied, women who are pregnant or breast feeding a child should not take melatonin.
Both Ativan and melatonin can be used for sleep, but melatonin is not a depressant. While ativan will actual make you tired, melatonin simply promotes sleep. As melatonin does not depress respiration, it should be safe to take it with ativan at the same time, and to take one at any point after you took the other. Just remember, you should discuss all supplements with your doctor before use to prevent potential interactions.