What is the expiry period of a filled prescription?

The expiry period of a filled prescription generally refers to the length of time a prescription remains valid for dispensing and use after it has been filled. In most jurisdictions, the standard period is 12 months from the dispense date for most prescriptions. However, certain medications, particularly those that are stable and don't deteriorate quickly, may have a longer expiry period of up to 18 months.

In this scenario, if the correct answer indicates 18 months, it aligns with the understanding that specific categories of medication or prescriptions may indeed allow for an extended validity period, considering factors such as the stability of the drug, classification of the medication (e.g., controlled substances may have different regulations), and state or provincial laws.

The other options, such as 6 months, 12 months, and 24 months, do not generally conform to the standard practices regarding prescription validity, making 18 months the most fitting choice. This option reflects common regulations that pharmacy technicians must be aware of when managing prescriptions and ensuring they are filled within the legal timeframe.