An old label is a record, not today’s pack

What a preserved label can tell you

NIH ODS describes the Dietary Supplement Label Database as a collection of information printed on US supplement labels. It includes products reported on and off the market, and records are added or updated as label information changes. It is useful for identifying what a particular recorded version declared.

That purpose has limits. The database disclaimer states that manufacturers or distributors are responsible for the label information; entries can be incomplete or inaccurate. Inclusion is not NIH or FDA endorsement or a guarantee of accuracy. A record therefore supports wording such as “the archived label declares”, not “this product has been independently verified”.

On Proof & Price, US label records belong in the international reference collection. They are not evidence that a seller can deliver the product worldwide. Their value is research visibility: ingredient identity, serving basis, stated quantities and recorded precautions can be examined while the missing commercial checks stay explicit.

Sources: NIH ODS · What the Dietary Supplement Label Database contains ↗ · NIH DSLD · Label information and endorsement disclaimer ↗

Keep four dates separate

A source can involve several dates with different meanings. The date a label entered a database describes that record. A website retrieval date describes when someone viewed it. A certificate date describes a particular document or assessment. The batch’s manufacture or expiry details describe the physical pack. One should not be substituted for another.

Fictional example: a researcher retrieves a record on 3 November 2026, but the database entry dates from May 2023. The researcher can honestly report a 2026 retrieval and a 2023 label record. That does not show the formula was checked with the manufacturer in 2026. Nor does the older entry date establish that an item currently for sale is expired.

A current manufacturer page might differ from the archived label. Keep the two versions identifiable and compare them; do not merge the newest claim from one with the serving size from another. If the difference cannot be resolved, display the conflict and suspend any comparison that depends on the disputed field.

Sources: NIH DSLD · Current and historical records: frequently asked questions ↗

Build a chain of identity before comparing versions

Our editorial matching checklist is: brand, full product name, flavour or variant, formula or concentration, serving size, net quantity and intended market. Then record the source URL and any database label ID. A familiar name is a starting point, not enough evidence that two records describe the same item.

Fictional example: a US vanilla powder uses a 32 g serving, while an India-market listing with a similar name shows 35 g. Do not attach the US protein amount to the Indian price until the actual local panel establishes that relationship. Inspect panel details rather than inferring formula identity from package appearance.

When the physical pack is available, compare its panel and identifying details with the selected reference. Keep the seller’s invoice and photograph the batch and expiry information for your own records. If essential identity information is missing, ask for it rather than replacing it with a matching-looking image from another retailer.

Verify a certification at its own source

A claim copied onto a shopping page is different from a match in the certification organisation’s directory. NSF Certified for Sport offers searches including product, company and lot information. USADA warns that certification logos can be misused and advises checking both the product and the relevant batch instead of trusting the logo alone.

Use the exact scheme name, then match the directory details that the scheme actually provides. Record the search date, product and any applicable lot. A listing for one formula, flavour or lot does not automatically cover another. If a result is unclear, treat the match as unresolved and contact the certifier through its official channel.

Even a confirmed match has a scope. It does not demonstrate that a supplement treats disease, that you need it, or that every possible risk is eliminated. Ingredient research, label content, manufacturing standards and sport-focused certification answer different questions. Avoid collapsing them into a single “approved” badge.

Sources: NSF Certified for Sport · Official product and lot search ↗ · USADA · Verify certification logos against the product and batch ↗ · NIH ODS · Supplement quality and evidence limits ↗

Write a useful evidence note, not a vague confidence score

A practical note could read: “US archived label, entry dated May 2023, retrieved 3 November 2026. Declared quantities recorded for the stated two-capsule serving. Current manufacturer formulation, local stock, delivered price and purchased-batch status not established.” This fictional wording is intentionally specific about what was checked and what was not.

Use distinct fields for label source, current formulation check, price observation, delivery-market check and batch evidence. Mark an unfinished check as unverified. Missing evidence does not prove a product is counterfeit or unsafe; equally, the absence of a warning in a database does not prove safety.

A visitor can use a historical profile while recognising its limits. New evidence can then be attached to the correct field and version, rather than making every old claim look newly confirmed.