eCFR Reference Browser

---

title: "21 CFR §20.25"

source: "https://www.ecfr.gov/current/title-21/section-20.25"

title_number: "21"

volume_number: "1"

chapter_number: "Unknown"

subchapter_code: "A"

subchapter_subject: "GENERAL"

part_code: "20"

part_subject: "PUBLIC INFORMATION"

subpart_code: "B"

subpart_subject: "General Policy"

section_number: "20.25"

section_subject: "Retroactive application of regulations."

cfr_reference: "21 CFR 20.25"

title_name: "Title 21"

title_subject: "Food and Drugs"

parts_covered: "Parts 1 to 99"

revised_date: "Revised as of April 1, 2019"

publication_date: "As of April 1, 2019"

contains_description: "Containing a codification of documents of general applicability and future effect"

publication_info: "Published by the Office of the Federal Register National Archives and Records Administration as a Special Edition of the Federal Register"

---

The provisions of this part apply to all records in Food and Drug Administration files.

§20.25 - Retroactive application of regulations.