Which date is assigned by the manufacturer of the medication?

The date assigned by the manufacturer of the medication is known as the expiration date. This date signifies the last day that the manufacturer guarantees the full potency and safety of the medication when stored under specified conditions. After this date, the product may no longer be effective or safe to use.

In contrast, the beyond use date is assigned to compounded medications and indicates the date until which the compounded product can be considered effective, based on how it has been prepared and stored. Storage date doesn't refer to a specific deadline of use but rather provides information on the appropriate conditions to maintain the integrity of the medication. The compounding date is relevant to when the drug is actually prepared in a pharmacy setting and does not apply to the manufacturer's role.