Supplement contract manufacturing: who decides what
Part 111 duties follow the work each firm does. A quality agreement records who does each duty; it cannot make a duty disappear.

In Short
- Map each operation to the Part 111 duty it carries.
- Agree whose quality control releases product.
- Write down change, complaint and recall roles.
The Contract Manufacturing & Co-Packing Guide
Your customer's spec. Your plant. One record.
- Which rules, which product
- Specs, changes and their materials
- Release and evidence
We ask for your name and email so we can handle this request. The full guide then opens on this site, ready to translate, print or save. Privacy policy. Practical orientation, not legal advice; your quality unit decides which rules apply.
UltimateFree guide
The Contract Manufacturing & Co-Packing Guide
Your customer's spec. Your plant. One record.

Part 111 applies to anyone who manufactures, packages, labels or holds a dietary supplement (21 CFR 111.1). When a brand contracts out manufacture, both firms usually hold duties. FDA's 2016 guidance on contract manufacturing quality agreements was written for drugs, but its structure is a useful model. Sources checked 3 Oct 2026.
Who Part 111 applies to
Section 111.1 covers anyone who manufactures, packages, labels or holds a dietary supplement, with a limited exception for holding at retail for direct sale to consumers. Map which operations each party performs; that shows which Part 111 duties each holds.
More on who Part 111 applies to
An agreement cannot remove a party's own legal duties.
Quality Control Duties
Under 21 CFR 111.105, quality control personnel approve or reject specifications, processes, procedures and deviations, and review supplier qualification. Under 111.127, quality control approves packaging and labeling records and approves or rejects packaged and labelled supplements for distribution.
Example Split of Duties
| Activity | Contract manufacturer | Brand owner |
|---|---|---|
| Batch record and tests | Does | Receives as agreed |
| Specifications | Applies | Approves as agreed |
| Label and artwork | Applies | Approves as agreed |
| Release for distribution | As agreed in writing | As agreed in writing |
- Batch record and tests
- Contract manufacturer
- Does
- Brand owner
- Receives as agreed
- Specifications
- Contract manufacturer
- Applies
- Brand owner
- Approves as agreed
- Label and artwork
- Contract manufacturer
- Applies
- Brand owner
- Approves as agreed
- Release for distribution
- Contract manufacturer
- As agreed in writing
- Brand owner
- As agreed in writing
More on quality Control Duties
Agree in writing whose quality control does each of these.
What the quality agreement should cover
FDA's 2016 guidance describes defining who does what, how changes are approved, how results and deviations are shared, and how disagreements are resolved. For supplements, add specifications, testing responsibility, label and artwork approval, complaints, records access and recall roles.
Release and evidence
A practical sequence is: the manufacturer completes the batch record and tests; its quality control reviews; the party responsible for release records the decision; records are shared as agreed. Keep the evidence in a form both parties can inspect.
Worked Example: a Batch Waiting on One Result
- Day 0Batch B-3310 packed; record complete except heavy metals resultContract manufacturer
- Day 2Result received within specificationLaboratory
- Day 2Quality control reviews records and approves for distributionAgreed quality control
- Day 3CoA and lot record shared with the brand ownerContract manufacturer
Changes, complaints and recalls
Write down who approves changes to formula, supplier, process or label, who receives complaints, and who leads a recall. Each party still keeps its own legal duties.
Questions
Can a brand owner contract out all its Part 111 duties?
No. Duties follow the operations each firm performs, and an agreement does not remove a legal duty. Map operations to duties and record who does each.
Does FDA's quality agreement guidance apply to supplements?
It was written for drug manufacturing. Its structure is a useful model, but Part 111 is the binding rule for supplements.
Who releases the finished supplement?
Under 21 CFR 111.127, quality control approves or rejects packaged and labelled supplements for distribution. Agree in writing whose quality control does this.
How does V5 help both parties?
V5 keeps specifications, master and batch records, lab results, a release queue, change control, complaints and lot trace, with role-based access and a customer portal for sharing CoAs and lot records. People decide release.
Practical orientation, not legal advice. Rules differ by jurisdiction; your quality and compliance team decides what applies.
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