Docket Number: FDA-2022-D-0108 Issued by:
Guidance Issuing Office
Center for Drug Evaluation and Research
The Food and Drug Administration (FDA or Agency) is announcing the availability of a final guidance for industry entitled “Considerations for Waiver Requests for pH Adjusters in Generic Drug Products Intended for Parenteral, Ophthalmic, or Otic Use.” This guidance is intended to assist abbreviated new drug application (ANDA) applicants that reference a drug product intended for parenteral, ophthalmic, or otic use in seeking approval of a drug that is qualitatively (Q1) different or quantitatively (Q2) different from the reference listed drug (RLD) with respect to the pH adjuster(s). This guidance describes how FDA intends to evaluate a request for a waiver of Agency requirements for a Q1 or Q2 difference in pH adjuster, including recommendations on the type of information to provide in support of such a waiver request. This guidance finalizes the draft guidance of the same title issued on April 14, 2022.
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If unable to submit comments online, please mail written comments to:
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Food and Drug Administration
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All written comments should be identified with this document’s docket number: FDA-2022-D-0108.
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Content current as of:
11/14/2025
