A formulary is the list of drugs your insurance plan covers, sorted into tiers that determine your share of the cost. A medication on a higher tier costs you more out of pocket; one that isn't on the formulary at all generally isn't covered.
A formulary is the list of drugs your insurance plan covers, sorted into tiers that determine your share of the cost. A medication on a higher tier costs you more out of pocket; one that isn't on the formulary at all generally isn't covered.
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