Final answer:
In Arizona, most prescriptions are valid for one year from the written date, but controlled substances have different rules: Schedule II cannot be refilled, and Schedules III and IV are valid for 6 months.
Step-by-step explanation:
In Arizona (AZ), the duration for which a prescription is considered valid varies depending on the type of prescription. For most medications, prescriptions are generally valid for one year from the date they were written. However, prescriptions for controlled substances are subject to stricter regulations. According to federal and state laws, prescriptions for Schedule II controlled substances cannot be refilled; a new prescription is required for each fill. For Schedule III and IV controlled substances, the prescription is valid for 6 months.
It's important for patients to be aware of these regulations to ensure that they aren't trying to use an outdated prescription. Pharmacists in AZ will not be able to fill a prescription that has expired. When in doubt, consult with a healthcare professional or the prescribing physician to determine the exact validity period of your specific prescription.