Health and Human Services Department, Food and Drug Administration
The Food and Drug Administration (FDA or Agency) is announcing the availability of a final guidance for industry entitled "Physicochemical and Structural (Q3) Characterization of Topical Drug Products Submitted in ANDAs." This guidance is intended to assist applicants who submit abbreviated new drug applications (ANDAs) for liquid-based and/or other semisolid products applied to the skin, including integumentary and mucosal (e.g., vaginal) membranes (referred to as "topical products"). This guidance provides recommendations for physicochemical and structural (collectively, "Q3") characterizations that can be used to identify the dosage form of a proposed generic (test) topical product, and to describe properties of the drug product that may be critical to its performance (to support a demonstration of bioequivalence (BE)). This guidance finalizes the draft guidance of the same title issued on October 21, 2022.
Document Headings Document headings vary by document type but may contain the following: the agency or agencies that issued and signed a document the number of the CFR title and the number of each part the document amends, proposes to amend, or is directly related to the agency docket number / agency internal file number the RIN which identifies each regulatory action listed in the Unified Agenda of Federal Regulatory and Deregulatory Actions See the Document Drafting Handbook for more details. Department of Health and Human Services Food and Drug Administration [Docket No. FDA-2022-D-1864] AGENCY: Food and Drug Administration, HHS. ACTION: Notice of availability. SUMMARY: The Food and Drug Administration (FDA or Agency) is announcing the availability of a final guidance for industry entitled “Physicochemical and Structural (Q3) Characterization of Topical Drug Products Submitted in ANDAs.” This guidance is intended to assist applicants who submit abbreviated new drug applications (ANDAs) for liquid-based and/or other semisolid products applied to the skin, including integumentary and mucosal ( e.g., vaginal) membranes (referred to as “topical products”). This guidance provides recommendations for physicochemical and structural (collectively, “Q3”) characterizations that can be used to identify the dosage form of a proposed generic (test) topical product, and to describe properties of the drug product that may be critical to its performance (to support a demonstration of bioequivalence (BE)). This guidance finalizes the draft guidance of the same title issued on October 21, 2022. DATES: The announcement of the guidance is published in the Federal Register on March 18, 2026. ADDRESSES: You may submit either electronic or written comments on Agency guidance at any time as follows: Electronic Submissions Submit electronic comments in the following way: Federal eRulemaking Portal: https://www.regulations.gov . Follow the instructions …
Other Federal Register documents from the same docket.
Citation: 91 FR 13039
