What Is cGMP?

The FDA's quality standards for the manufacturing, packaging, labelling, and storage of dietary supplements, codified in 21 CFR Part 111. Compliance is mandatory for all supplement manufacturers.

Why It Matters for Supplement Brands

cGMP compliance is not optional — it's the law. Every supplement manufacturer, packer, and labeller in the US must follow these regulations. Violations can result in FDA warning letters, product seizures, injunctions, and criminal prosecution. For brands, ensuring your contract manufacturer is cGMP-compliant protects your products and your reputation.

How It Works

The dietary supplement cGMPs (21 CFR Part 111) require:

1. **Personnel**: Qualified personnel with proper training and hygiene practices. 2. **Physical plant**: Clean, properly maintained facilities with adequate equipment. 3. **Quality control**: Written specifications for raw materials, in-process materials, and finished products. 4. **Manufacturing operations**: Documented procedures for all production steps, batch records, and process validation. 5. **Identity testing**: Testing to verify the identity of all incoming dietary ingredients (this is mandatory — not optional). 6. **Finished product testing**: Testing to verify that finished products meet specifications for identity, purity, strength, and composition. 7. **Record keeping**: Complete records that can be recalled and reviewed by the FDA. 8. **Returned/rejected products**: Procedures for handling returned, rejected, or recalled products.

The 'c' in cGMP stands for 'current' — meaning practices must reflect the latest standards and technology, not outdated methods.

Common Mistakes to Avoid

  • ✗Assuming cGMP compliance means the product is FDA-approved — it doesn't, it means the manufacturing process meets quality standards
  • ✗Not auditing contract manufacturers for cGMP compliance before engaging them
  • ✗Skipping identity testing of raw materials — this is a mandatory requirement, not optional
  • ✗Confusing food cGMPs (21 CFR Part 117) with dietary supplement cGMPs (21 CFR Part 111) — they are different
  • ✗Not maintaining adequate documentation — if it isn't documented, it didn't happen (from the FDA's perspective)

Related Terms

SubstantiationDSHEA (Dietary Supplement Health and Education Act)

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