While data have been reported most extensively for fluoxetine and paroxetine, class effects of SSRI therapy appear to include increased sleep onset latency and/or an increased number of awakenings and arousals, leading to an overall decrease in sleep efficiency.12,13 Virtually all of the SSRIs examined have been noted to suppress REM sleep.1 Clinically, reports of a change in the frequency, intensity, and content of dreaming can be associated with SSRIs, as well as the occurrence of these symptoms on discontinuation.