Final answer:
Compounded medications have a beyond use date that is different from the expiration date and is determined by the pharmacist.
Step-by-step explanation:
Compounded medications have a beyond use date that is a date when the stability or potency of a medication can no longer be guaranteed. This is different from the expiration date, which is the date at which the manufacturer can no longer guarantee the effectiveness and safety of the medication. The beyond use date is determined by the pharmacist and is based on factors such as the ingredients used, the storage conditions, and the intended use of the medication.