21 CFR 1.1390 - When will modified requirements that we adopt or an exemption that we grant become effective?

Regulations last checked for updates: Feb 12, 2026

Title 21 - Food and Drugs last revised: Dec 18, 2026

View all text of Subpart S [§ 1.1300 - § 1.1465]

§ 1.1390 - When will modified requirements that we adopt or an exemption that we grant become effective?

Any modified requirements that FDA adopts or exemption that we grant will become effective on the date that notice of the modified requirements or exemption is published in the Federal Register, unless otherwise stated in the notice.

authority: 15 U.S.C. 1333,1453,1454,1455,4402; 19 U.S.C. 1490,1491; 21 U.S.C. 321,331,332,333,334,335a,342,343,350c,350d,350j,352,355,360b,360ccc,360ccc-1,360ccc-2,362,371,374,381,382,384a,387,387a,387c,393,and; 42 U.S.C. 216,241,243,262,264,271

source: 42 FR 15553, Mar. 22, 1977, unless otherwise noted.

cite as: 21 CFR 1.1390