1. Wholesale distributor verification requirement for saleable returned drug product and dispenser verification requirements when investigating a suspect or illegitimate product: compliance policies : guidance for industry Publication: Silver Spring, MD : Center for Drug Evaluation and Research, August 2023 Subject(s): Counterfeit DrugsDrug IndustryDrug and Narcotic ControlFraudGovernment RegulationSubstandard DrugsUnited StatesUnited States.