See Asa at Microbiome & Probiotic R&D & Business Collaboration Forum - La Jolla, California 10/13/2025

Warning Letter Wednesday Posts

A weekly exploration of FDA warning letters and enforcement trends


September 27, 2023
Takeaway -

Test ingredients for common adulterants

September 20, 2023
Takeaway -

Re-review websites if inspected by FDA

September 13, 2023
Takeaway -

Ensure vendors are properly qualified

September 6, 2023
Takeaway -

Small labeling issues increase warning letter risk

August 16, 2023
Takeaway -

Re-review online marketing if inspected by FDA

August 9, 2023
Takeaway -

Test products like glycerin for adulterants

August 2, 2023
Takeaway -

Formats that are favorable to children should be avoided

July 26, 2023
Takeaway -

Biomarkers claims elevate enforcement risk

July 12, 2023
Takeaway -

Product formats & packaging should not appeal to children

July 5, 2023
Takeaway -

Review videos for compliance concerns