Interesting topic. I've wondered this for awhile, now. Although I feel anyone w/ a THC medical card should be allowed to exercise their right to intake, I also feel no medical professional should go to work impaired. Rarely (& years ago) I have imbibed & could not imagine going to work... or even wanting to, in that condition. That said, how could one prove they are not impaired if drug tested? No matter the legal substance found to be positive? Taking a med at bedtime is way different than just prior to work. And just to throw an off-topic comment, how many night shifters have gone to work "impaired" from lack of sleep?