---
kind: "section"
citation: "21 C.F.R. § 20.25"
title: "21"
number: "20.25"
heading: "Retroactive application of regulations."
url: "https://uscodex.org/cfr/21/20.25"
---

# §20.25. Retroactive application of regulations.


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


## Notes

### Authority

Authority: 5 U.S.C. 552; 18 U.S.C. 1905; 19 U.S.C. 2531-2582; 21 U.S.C. 321-393, 1401-1403; 42 U.S.C. 241, 242, 242a, 242l, 242n, 243, 262, 263, 263b-263n, 264, 265, 300u-300u-5, 300aa-1.

### Source

Source: 42 FR 15616, Mar. 22, 1977, unless otherwise noted.