The Food and Drug Administration (FDA) is announcing the availability of a draft guidance for industry entitled “Bioequivalence Studies With Pharmacokinetic Endpoints for Drugs Submitted Under an ANDA.” This guidance provides recommendations to applicants planning to include bioequivalence (BE) information in abbreviated new drug applications (ANDAs) and ANDA supplements. The guidance describes how to meet the BE requirements set forth in FDA regulations. The guidance is applicable to dosage forms intended for oral administration and to non-orally administered drug products in which reliance on systemic exposure measures is suitable for documenting BE. The guidance will be especially useful when planning BE studies intended to be conducted during the postapproval period for certain changes in an ANDA.