The pharmacist is teaching a patient about prescribed medications. One of the medications is a ...

The pharmacist is teaching a patient about prescribed medications. One of the medications is a controlled substance and the patient asks the pharmacist to explain what that means. What is the best response by the pharmacist?

1.   A controlled substance is regulated under the Controlled Drugs and Substances Act, and may have many restrictions placed on ordering or refilling this medication.
2.   A controlled substance requires both a written prescription and a telephone call from the prescribing practitioner.
3.   A controlled substance does not require a prescription to purchase.
4.   A controlled substance is always called in to the pharmacy by the practitioner.