"i started taking ambien back in january 05 after i had gastric bypass, which also means i don&#039;t get the full dose or affect of the medicine. however, last october i was arrested for dui of having ambien in my blood. a cop never saw me driving but some crazy old lady did and followed me all the way home to report i crossed over the yellow line at 7:30 in the morning after taking my son to school and thought i was a drunk driver. i had not been drinking at all. i had taken a 10 mg pill at 11pm the night before and had been for all these years so i knew how it affected me. when the cops showed up and i (like a dumby) told them what medicines i took they arrested me for dui of drugs. they took me to the hospital took my blood, since it showed up i got charged."