U.S. Code of Federal Regulations
Regulations most recently checked for updates: Aug 28, 2025
A nonprescription drug product approved under section 505(c) or 505(j) of the Federal Food, Drug, and Cosmetic Act with an ACNU as defined in § 201.67(b)(1) is exempt from section 502(f)(1) only if all the following conditions are met:
(a) The label of the drug must include instructions for the ACNU as follows:
(1) Content of instructions for the ACNU must either be:
(i) ACNU Instructions, which read as follows: “To check if this drug is safe for you, go to [insert where or how consumers can find information about the ACNU; for example, applicant's website, applicant's phone number, or specific retail location] and [insert action to be taken by consumer]. Do not take this drug without completing this step”; or
(ii) Alternative ACNU Instructions: FDA may approve an NDA applicant's revisions to the ACNU Instructions when the revisions are appropriate for a specific drug product and the applicant supports the revisions with adequate data or other information that demonstrate sufficient consumer understanding of the revised statement.
(2) The locations of instructions for the ACNU are as follows:
(i) If the purpose of the ACNU is for self-selection, the instructions for the ACNU must appear under the “Use” or “Uses” heading required in § 201.66(c)(4) as the first statement, followed by the other information required in § 201.66(c)(4);
(ii) If the purpose of the ACNU is for actual use, the instructions for the ACNU must appear under the “Directions” heading required in § 201.66(c)(6) as the first direction, followed by the other information required in § 201.66(c)(6); or
(iii) If the purpose of the ACNU is for both self-selection and actual use, the instructions for the ACNU must appear under the “Use” or “Uses” heading as the first statement, followed by the other information required in § 201.66(c)(4) and may also appear under the “Directions” heading as the first direction, followed by the other information required in § 201.66(c)(6).
(b) The label of the drug must include a statement about the ACNU as follows:
(1) The content of the statement about the ACNU must either be:
(i) The ACNU Statement, which reads as follows: “You must complete an extra step to see if this drug is safe for you before you use it. Do not take this drug without completing this step. See the Drug Facts Labeling for more information”; or
(ii) An Alternative ACNU Statement: FDA may approve an NDA applicant's revisions to the ACNU Statement when the revisions are appropriate for a specific drug product and the applicant supports the revisions with adequate data or other information that demonstrate sufficient consumer understanding of the revised statement.
(2) The statement about the ACNU must be in the form and manner required by § 201.67(c).
(c) The labeling of the drug must comply with other applicable labeling requirements for nonprescription drug products under this part, including the format and content requirements for nonprescription drug product labeling under § 201.66.
(d) The ACNU must be implemented by the applicant in accordance with the following, as approved by FDA in the application:
(1) The key elements of the ACNU under § 314.56(c)(1)(iv) of this chapter for NDAs or § 314.56(c)(2)(ii) of this chapter for ANDAs; and
(2) The operationalization of the ACNU under § 314.56(c)(1)(vii) of this chapter for NDAs or § 314.56(c)(2)(iii) of this chapter for ANDAs.