Private Label vs White Label Peptides: What Is the Difference?
As this guide uses the terms, in both models one company makes the product and another sells it under its own brand. In this guide, white label means a stock product in standard packaging, with the buyer’s brand added to a standard label layout; private label means the product, the label design or the packaging is made custom for the brand. This guide found no single definition of either term, so the contract should define them.
This guide is for people setting up a research-use-only (RUO) peptide brand and for procurement staff comparing supply models. It describes the models in general terms. It names no supplier and gives no prices or figures, and it is not legal advice.
What do private label and white label mean?
Neither term has one definition that this guide found in a primary source. For “private label”, the closest authoritative text is in a drug regulation, 21 CFR 207.1, whose definitions “apply to this part”, Part 207, which concerns establishment registration and drug listing. It reads: “Private label distribution means commercial distribution of a drug under the label or trade name of a person who did not manufacture, repack, relabel, or salvage that drug.” It also reads: “Private label distributor means, with respect to a particular drug, a person who did not manufacture, repack, relabel, or salvage the drug but under whose label or trade name the drug is commercially distributed.” These are definitions for a drug within that part. This guide does not decide whether the part applies to any product.
FDA’s 2016 guidance “Contract Manufacturing Arrangements for Drugs: Quality Agreements” uses the terms “private label distributors” and “own label distributors” without defining them, and does not use “white label”: “We encourage entities that engage in manufacturing related solely to drug distribution (e.g., distributors, brokers, private label distributors, own label distributors) to follow the recommendations in this guidance document, as appropriate.”
For “white label”, no authoritative definition was found. So this guide uses the terms as follows, and states no claim about how widely either is used:
- White label: a stock product in standard packaging, with the buyer’s brand added to a standard label layout.
- Private label: the product, the label design or the packaging is made custom for the brand.
A supplier may use either word in its own sense, so treat each term as a starting question, not an answer.
How do the two models differ in practice?
The table shows how the two models can differ. Any row can come out differently under a given supplier’s terms, which is why each is worth asking about.
| Topic | Private label, as defined here | White label, as defined here |
|---|---|---|
| Label artwork and wording | The brand may supply its own design and text, which the supplier prints and applies | The brand may add its name to a layout the supplier already uses |
| Who owns the artwork | Settled in the contract; ask who holds the files and whether the brand can move them to another supplier | Settled in the contract; the layout may belong to the supplier |
| Exclusivity | The specification or packaging may be reserved to one brand, if the contract says so | The same product may be sold to other resellers |
| Specification control | The brand may set or approve the specification, and changes to it | The supplier may set the specification, and the brand accepts it or does not |
| Minimums | Custom labels and packaging may mean larger or different minimums | Existing stock may allow smaller orders, depending on the supplier |
| Lead times | Label design, proofing and a printing run can add time | A product and layout already in place may take less time |
| Who writes and approves label and marketing statements | The brand owner, for its own label and marketing, as the contract sets out | The brand owner, for its own label and marketing, as the contract sets out |
Minimums are covered further in How White Label Peptide Suppliers Set Minimum Order Quantities.
What stays the same under either model?
These three points apply under either model as this guide defines them.
Lot records. Under either model, a brand owner can ask for a record for each lot, and for the lot to be traceable from finished vial back to the materials and steps behind it.
A COA for each lot. A brand owner can ask that each lot carry its own certificate of analysis (COA), and that the testing laboratory’s report reach the brand unchanged, not as a retyped summary.
The brand’s label and marketing words are its own. A supplier can print and apply a label, but the words the brand chooses and the claims it makes are the brand’s. 21 CFR 201.128, which explains the words “intended uses” in the sections it lists, says they refer to “the objective intent of the persons legally responsible for the labeling of an article”, and that it can be shown by “labeling claims, advertising matter, or oral or written statements by such persons or their representatives”. The same section adds that if “a packer, distributor, or seller intends an article for different uses than those intended by the person from whom he or she received the article, such packer, distributor, or seller is required to supply adequate labeling in accordance with the new intended uses.”
Choosing a model name does not by itself settle who does what, so the contract should set out each party’s duties. The quality-agreement guide, What a Quality Agreement With a Peptide Manufacturer Should Cover, goes further into what to write down.
What should a brand owner put in writing?
A short checklist, whichever term the supplier uses:
- Definitions. State in the contract what “private label” and “white label” mean for this deal, in a sentence each.
- Label ownership. Who owns the artwork files and the label wording, and whether they can be moved to another supplier.
- Exclusivity. Whether the product, the specification or the packaging is reserved to the brand, for how long, and what that costs.
- Specification control. Who sets the specification, who approves changes, and how a change is requested.
- Minimums. The unit they are counted in, whether they apply per product or per order, and what happens to labeled stock if orders stop.
- Lead times. For a first order, a reorder, and a label change, and what happens if a date is missed.
- Lot records and COA. What each lot record holds, how lots are numbered, that every lot has its own COA, and that the laboratory’s report is passed on unchanged.
- Label and marketing statements. Who writes them and who approves and signs off on them. The brand’s own label and marketing statements remain the brand’s.
- Label changes. Who may request one, who signs off, and what happens to labels already printed.
Two plain checks help with every item. Ask for the answer in the contract, not on a call. And ask the same question of each supplier being compared, so the answers can be laid side by side.
Last reviewed: 2026-11-13
References
- 21 CFR 207.1, What definitions and interpretations of terms apply to this part? eCFR, current as of 2026-11-01. https://www.ecfr.gov/current/title-21/chapter-I/subchapter-C/part-207/subpart-A/section-207.1
- 21 CFR 201.128, Meaning of “intended uses”. eCFR. https://www.ecfr.gov/current/title-21/chapter-I/subchapter-C/part-201/subpart-D/section-201.128
- Contract Manufacturing Arrangements for Drugs: Quality Agreements, Guidance for Industry (the sentence naming “private label distributors, own label distributors”). U.S. Food and Drug Administration. November 2016. https://www.fda.gov/media/86193/download
Frequently asked questions
Is there one legal definition of private label and white label?
None was found for white label. For private label, 21 CFR 207.1 defines "private label distribution" for part 207, which concerns drug establishment registration and listing; this guide does not decide whether that part applies to any product. Because this guide found no single definition, define both terms in the contract.
Who writes and approves the label under either model?
The contract should say who writes, approves and signs off on the label and marketing statements. The brand owner's label and marketing words are its own.
Does a COA come with either model?
It can. A brand owner can ask for a certificate of analysis (COA) for each lot under either model, and ask that the testing laboratory's report be passed on unchanged.
What should be in writing?
Definitions of the terms, who owns the label artwork and wording, exclusivity, specification control, minimums, lead times, lot records, COA delivery and who approves label changes.