A formulary (also known as a Prescription Drug List or PDL) is a list of the most commonly prescribed medications that may be covered by your plan. The list includes both brand-name and generic prescription medications approved by the Food and Drug Administration (FDA). Medications are listed by common categories or classes and placed in tiers that represent the cost you pay out of pocket. This makes it easier for you and your doctor to find other options to help you save money. To make sure you are viewing the correct prescription drug list, log in to your member account.