Yes. Whether it is a prescription or non-prescription drug, DUI involves driving
or being in actual physical control of a vehicle while you are impaired. Even if
you are prescribed medicinal marijuana, consuming said marijuana may impair you,
affecting your ability to safely operate a motor vehicle.
Our firm has very experienced medical marijuana DUI attorneys that have dealt with
these issues countless times. Some vital factors include when you consumed the medicinal
marijuana and whether the officer who stopped or arrested you has sufficient training/experience
to be able to legally prove that you were impaired by marijuana while you were operating
the vehicle.  As with any other instance, it is likely best to remain silent
concerning any drug consumption when confronted by a stopping officer.