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Q3B(R) Impurities in New Drug Products (Revision 3) August 2006

Final Level 2 Revised Guidance
Docket Number:
FDA-1996-D-0048 (Revision 1)
Issued by:
Guidance Issuing Office
Center for Drug Evaluation and Research
Center for Biologics Evaluation and Research

This guidance provides recommendations for registration applications on the content and qualification of impurities in new drug products produced from chemically synthesized new drug substances not previously registered in a region or member state. This guidance revises the ICH guidance of the same title that was issued in May 1997 and first revised in February 2003. The first revision clarified the 1997 guidance and included other changes. The revision also provided consistency with more recently published ICH guidances (e.g., Q3A(R) Impurities in New Drug Substances, Q3C Impurities: Residual Solvents, and Q6A Specifications: Test Procedures and Acceptance Criteria for New Drug Substances and New Drug Products: Chemical Substances). This second revision provides clarification to Attachment 2. This guidance complements the ICH Q3A(R) guidance, which should be consulted for basic principles along with ICH Q3C when appropriate.

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5630 Fishers Lane, Rm 1061
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All written comments should be identified with this document's docket number: FDA-1996-D-0048 (Revision 1) .

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