Tag: FDA bioequivalence

Deficiency Letters in Generic Applications: Common FDA Findings and How to Avoid Them
Deficiency Letters in Generic Applications: Common FDA Findings and How to Avoid Them
Graham Everly December 2, 2025

Deficiency letters from the FDA are a major roadblock for generic drug applicants. Learn the most common reasons they’re issued-like dissolution failures, impurity gaps, and DS sameness issues-and how to avoid them to speed up approval.