Final answer:
A pharmacist prescribes something on the "pharmacist formulary" when the drug or medication is listed on the formulary, which is a list of drugs that a pharmacist is authorized to prescribe in their practice.
Step-by-step explanation:
When a pharmacist prescribes something on the "pharmacist formulary," it means that the drug or medication is listed on the formulary. A formulary is a list of drugs that a pharmacist is authorized to prescribe in their practice. It includes both over-the-counter and prescription medications that the pharmacist is allowed to recommend or dispense to patients. The pharmacist formulary varies by state and may include different drugs based on state-specific regulations and guidelines.