Market dynamics of authorized generics in Medicaid from 2014 to 2020.

AGs represented a small share of Medicaid prescription drug use from 2014 to 2020, but when AGs were available, they accounted for sizeable market share. Among the minority of cases in which AGs were marketed a year or more before independent generics, manufacturers may be using AGs to bolster brand-name drug prices or to undermine independent generic competition, meriting further attention by regulators.