Ativan and sleepIt . . Find patient medical information for Ativan Oral on WebMD including its uses, side . . At first, I thought it didn't work . headache, coma; respiratory depression, apnea, worsening of sleep apnea, worsening . Best Answer: I take 100 mg. User ratings and reviews for drugs, medications, treatments, herbs, vitamins and conditionsOther side effects include a feeling of depression, loss of orientation, headache, and sleep disturbance. 3/31/2011 · Someone searched my blo... more