Driving Performance After Middle of the Night Administration of 3.5 mg Zolpidem Tartrate Sublingual Tablet

7.5 mg tablet by mouth. Zopiclone is a commonly used hypnotic in Europe that is known to impair driving in the morning 9 hours after dosing.

3.5 mg zolpidem tartrate sublingual tablet taken either 3 or 4 hours prior to driving. Participants placed the study drug under the tongue and allowed it to dissolve there for about 2 minutes, then swallowed after dissolved.

Placebo matching zolpidem tartrate sublingual tablet taken either 3 or 4 hours prior to driving. Participants placed the study drug under the tongue and allowed it to dissolve there for about 2 minutes, then swallowed after dissolved.

Placebo matching zopiclone