Jan 2011 - Arizona | Attorney General Tom Horne is using a loophole in Prop 203 (the medicalmarijuana law that voters passed in 2010) on which to base his sales tax ruling. The law says would-be medical marijuana patients can get a “doctors’ recommendation” for the drug– not a prescription. Prescriptions are not taxable; doctors’ recommendations are. (This is like saying your doctor recommended aspirin or multi-vitamins; when you go to buy the aspirin or multi-vitamins, they are subject to sales tax.)