I to- ugersundersøgelserne hos ældre patienter afkortede Sonata 5 mg ofte indsovningstiden i forhold til placebo, mens Sonata 10 mg altid gav kortere indsovningstid end placebo.
In elderly patients, the time taken to fall asleep was often decreased with Sonata 5 mg and was always decreased with Sonata 10 mg, when they were compared with placebo in the two-week studies.