ARS 13-3457 makes it a crime to have a fake prescription drug. A prescription drug is any medicine that requires a prescription, like diabetes medication or asthma inhalers.
In the state of Arizona, being found in possession of or possession with the intent to use an imitation prescription-only drug equates to a class 2 misdemeanor.
If found guilty of a class 2 misdemeanor, you could be sentenced to a custodial term of up to 4 months. More commonly, you will face fines of a maximum of $750.