yes you can be charged for DUI if you're driving while high off anything (not just weed)

the only thing i don't get is if you admittedly tell a cop you're on bars for example, and driving (but not prescribed them) you can be charged with DUI.... but if you're prescribed that med, you can't be charged with DUI....

whether you're prescribed it or not you're still driving under the influence of it.... so wtf?