FDA Guidance Documents
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FDA Guidance Documents

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Stay current with the latest FDA guidance documents affecting drug, biologic, device, and diagnostic development. Browse recently issued and updated guidance to identify evolving regulatory expectations, compliance considerations, and recommendations that may influence your development and testing strategies.

Compounding Animal Drugs From Bulk Drug Substances: Compounding Under CGMP in Federally-Registered Facilities

August 28th, 2026|

This draft guidance (GFI #256B) describes circumstances where FDA generally does not intend to take enforcement action against the compounding of animal drug products from bulk drug substances at facilities registered under sections 503B(b) or 510(b) of the FD&C Act operating under current good manufacturing practice (CGMP). It extends FDA's...

Evaluation of Therapeutic Equivalence

August 24th, 2026|

This final guidance explains the criteria FDA uses to evaluate the therapeutic equivalence (TE) of drug products and what TE codes indicate for multisource prescription drug products listed in the Approved Drug Products With Therapeutic Equivalence Evaluations (the Orange Book). This guidance finalizes the draft guidance of the same title...

Potency Assessment of Active Immunotherapy Products

August 20th, 2026|

This draft guidance provides recommendations for developing assays to evaluate potency as part of a potency assurance strategy for active immunotherapy products (ACTIMPs), including peptide- and protein-based ACTIMPs that are not cellular or gene therapy products. It supplements FDA's December 2023 draft guidance "Potency Assurance for Cellular and Gene Therapy...

Frequently Asked Questions — Developing Potential Cellular and Gene Therapy Products

August 20th, 2026|

This final guidance provides industry with answers to frequently asked questions (FAQs) and commonly faced issues that arise during the development of cellular and gene therapy (CGT) products, spanning regulatory review, chemistry, manufacturing, and controls (CMC), pharmacology/toxicology, clinical, and clinical pharmacology topics. This guidance finalizes the draft version issued in...

Determining Whether To Submit an ANDA or a 505(b)(2) Application

August 18th, 2026|

This draft guidance describes FDA's current thinking on determining whether to submit an Abbreviated New Drug Application (ANDA) under section 505(j) of the FD&C Act or a 505(b)(2) application, including criteria for choosing between the two pathways and how to seek FDA's assistance. This revised draft updates and supersedes the...

Container Closure Systems for Human Drugs and Biological Products

August 14th, 2026|

This draft guidance provides a risk-based framework for evaluating the quality of container closure systems (CCSs) used with human drugs and biological products, including quality assessments and quality control of packaging materials and components. It applies to new applications, amendments, supplements, and legally marketed drugs under section 505G, and FDA...

Formal Meetings Between the FDA and Sponsors or Applicants of PDUFA Products

August 13th, 2026|

This guidance provides recommendations to sponsors and applicants of Prescription Drug User Fee Act (PDUFA) products on formal meetings with FDA's Center for Drug Evaluation and Research and Center for Biologics Evaluation and Research, including principles of good meeting management, procedures for requesting and conducting meetings, meeting types and formats,...

CVM GFI #152 Evaluating the Safety of Antimicrobial New Animal Drugs with Regard to Their Microbiological Effects on Bacteria of Human Health Concern

August 5th, 2026|

Prior to approving an antimicrobial new animal drug application, FDA must determine that the drug is safe and effective for its intended use in the animal, including an evaluation of the potential microbiological effects of the drug residues on bacteria of human health concern....

Biosimilar and Interchangeable Biosimilar Products: Considerations for Container Closure Systems and Device Constituent Parts

August 3rd, 2026|

This draft guidance is intended to help applicants develop container closure systems and device constituent parts for proposed biosimilar and interchangeable biosimilar products. This draft guidance expands on and clarifies the Agency's recommendations and expectations regarding the development of delivery devices and container closure systems described in Q.I.4 of the...

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