Final answer:
In an emergency where the prescriber is unavailable, a pharmacist may generally dispense a 72-hour supply of medication, although it can vary by jurisdiction and the type of medication.
Step-by-step explanation:
In the context of an emergency, when a prescriber is unavailable, a pharmacist may dispense a medication as an emergency fill which typically covers a short period. The duration for which an emergency fill can be dispensed varies by jurisdiction, but it is common for laws to allow for a 72-hour supply of medication. Some states may allow for a longer supply, up to a 30-day fill, under specific circumstances. It's important to note that this is dependent on the medication in question and the state's regulations. For example, controlled substances may have stricter rules regarding emergency fills.