Every ingredient amount is disclosed
The panel gives a per-ingredient amount rather than hiding quantities inside a proprietary blend, so each one can be compared to published research.
Full record · lc-9b623a3b · back to the summary
Doctor's Best Glucosamine Chondroitin Msm with OptiMSM Capsules
Exact product checkedGTIN not published · checked 2026-07-21
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How to read this report
What this is. We compare what a listing claims against what public records show — label arithmetic, barcode registries, NIH’s label catalog, FDA enforcement data, certification registries, and published research. Every statement below traces to one of those.
What the states mean. Confirmed = an outside source agrees. Contradicted = an outside source disagrees. Caution = something needs explaining. No data = we looked and found nothing — a gap, not a strike.
What it is not. A clean record is not an endorsement and never proof a product works. A thin record is not an accusation. We publish evidence and gaps; the conclusion is yours. Nothing here is medical advice.
Something wrong? Every figure is meant to be checkable — sources are named and linked. Send a correction and we’ll fix the record.
Panel, decoded
What the label discloses
6listed rows
6separately quantified
0combined blend totals
The listing-image panel publishes an amount for each of its 6 listed rows. That supports ingredient-by-ingredient review; it does not verify the contents.
| Panel row | Amount | %DV | What to notice |
|---|---|---|---|
| Chloride | 170 mg | — | |
| Sodium (from chondroitin sulfate sodium) | 120 mg | — | |
| Potassium | 190 mg | — | |
| Glucosamine Hydrochloride Potassium Sulfate | 1500 mg | — | |
| Chondroitin Sulfate Sodium | 1200 mg | — | |
| MSM (methylsulfonylmethane)(OptiMSM®) | 1000 mg | — |
FDA rules (21 CFR 101.36) require the amount of each dietary ingredient per serving unless hidden in a listed “proprietary blend” (legal, but a transparency yellow flag). A label stating no amount at all is non-compliant — a checkable red flag. This panel states amounts; the open question is whether those listed amounts are independently verified and how they compare with relevant research.
vision:google/gemini-2.5-flash Amounts are shown as listed panel data, not independently lab-tested contents.
Every check we ran
Confirmed evidence
What checked out1
These checks found support in the public record. They confirm specific facts, not the product as a whole.
Confirmed
Documented concerns
What needs caution1
These are documented contradictions or claims that need more evidence. They are separate from missing data.
The listing says 1,200 mg of chondroitin; the panel says 120 mg
We could not find an explanation for the difference — no blend, extract ratio, compound form or multi-capsule serving accounts for it. You are getting 120 mg of chondroitin per serving. Worth asking the brand which number describes the capsule you swallow.
Unresolved public record
What is still missing4
We looked for these signals but could not settle them from public sources. A gap is not a strike.
Multi-ingredient formula — panel read, serving weight unknown
We read the full Supplement Facts panel from the listing-image panel (below), but the label doesn’t state a serving weight, so the arithmetic can’t run. A gap in the label’s information, not evidence of a problem.
No recall found — which is not the same as being tested
This means only that no enforcement record matched the brand name — it does not mean the product was tested, reviewed, or cleared by FDA. New and untested products also have no recall records.
This item belongs to a catalog variation family
The paid catalog links this exact item to a parent listing. Review counts on public product pages may be shared across sizes, flavors, or other variants, so the count history is listing context — not evidence that reviewers received or tested this exact variant.
180-day review-count history is on file
Exact-listing history records written-review counts from 271 on 2025-08-04 to 245 on 2026-08-24 (net -26). Count movements can reflect sales, listing variants, collection resets, or moderation; this history does not establish whether reviews are authentic.
What to ask and check
What would settle the open questions
Why is this shown?
Everything we couldn’t verify is something a person can still ask about. Rather than leave gaps sitting as dead ends, we turn each one into a specific question — the exact document, citation, or number that would settle it — plus the things you can confirm yourself with the bottle in your hand.
Ask the brand or seller
1
What is the product’s UPC or GTIN?
The barcode is how a product gets matched to outside records — certification registries, label databases, recall data. Without it, almost nothing can be cross-checked.
2
Is this label filed with NIH’s Dietary Supplement Label Database (DSLD)?
Filing is voluntary, so absence proves nothing — but a filed label puts the full ingredient table on public record where anyone can read it.
3
Where are the ingredients sourced, and where is the product manufactured?
“Made in USA” can describe only the final bottling step. Ask which country the actives came from and whether the facility is audited.
Most brands and sellers publish a contact route. A clear answer adds evidence to the record; no answer leaves the question open.
Check for yourself — no one’s permission needed
1
Compare the panel on the bottle in your hand to the one shown in this record.
Ours was read from listing photos and can contain reading errors. The physical label is the source of truth — if they disagree, tell us and we’ll correct the record.
2
Check the lot number and expiry on the bottle against any COA you’re given.
A certificate that doesn’t name your lot doesn’t describe what you’re holding.
These are the open questions on this specific record — not a warning about the product, and not a suggestion to buy or avoid it. Getting them answered is how you decide for yourself.
What the listing promises — claim by claim
Why is this shown?
A listing’s promises are the reason people buy. Each one gets its own row: what was promised, what evidence would settle it, and what we could actually find. We never call a claim false — only whether proof proportionate to it exists on the public record.
| Claim | Status | What we found |
|---|---|---|
| Origin claim “…* TRUST AND PURE - Made in the USA with Globally-Sourced ingredients.…” | Claimed, not verifiable We looked for: customs records or label filings showing where ingredients were sourced and where it was made | “Made in USA” can describe only final bottling. Ingredient-sourcing records were not located for this product. |
| Benefit claim “Doctor's Best Glucosamine Chondroitin Msm with OptiMSM Capsules, Joint Support Supplement Supports Healthy Joint Structure, Function & Comfort, Non-GMO, Gluten Free, Soy ” | Not checked yet We looked for: whether the ingredient doses on the label match the doses used in published research | Ingredient-level evidence for this formula isn’t in our knowledge base yet. Recorded as not checked yet — not as a negative. |
“No evidence located” does not mean a claim is false — it means the seller has not put evidence proportionate to the claim on the public record, and we could not find any. Absence of proof is not proof of absence.
Verifiability profile — 2 of 6 public signals
✓ Supplement Facts visible in photos✓ Brand's own store found· Per-serving dose established — not published· UPC / GTIN published — not published· Found in NIH's label catalog (DSLD) — not published· Third-party lab named or registry-certified — not published
What this listing gives the public to check. Publishing these signals doesn't prove quality — but withholding them means claims can only be taken on faith.
Identity
| LookCloser record ID | lc-9b623a3b (internal — no barcode published, which limits cross-checking) |
| Brand | Doctor's BEST |
| Source listing identifier | B00KH6Q8X0 |
| Retailer listing title | Doctor's Best Glucosamine Chondroitin Msm with OptiMSM Capsules, Joint… show full titleDoctor's Best Glucosamine Chondroitin Msm with OptiMSM Capsules, Joint Support Supplement Supports Healthy Joint Structure, Function & Comfort, Non-GMO, Gluten Free, Soy Free, 360 Count |
From the label (photo-read)
| Serving size | 4 Capsules |
| Servings per container | 90 |
| Pack statement | 360 Veggie Capsules |
| Badges printed on pack | OptiMSM, GLUTEN-FREE, NON GMO, SOY-FREE |
Supplement Facts panel (photo-read):
| Ingredient | Amount per serving | Reading confidence |
|---|---|---|
| Chloride | 170 mg | High clearly legible in the photo |
| Sodium (from chondroitin sulfate sodium) | 120 mg | High clearly legible in the photo |
| Potassium | 190 mg | High clearly legible in the photo |
| Glucosamine Hydrochloride Potassium Sulfate | 1500 mg | High clearly legible in the photo |
| Chondroitin Sulfate Sodium | 1200 mg | High clearly legible in the photo |
| MSM (methylsulfonylmethane)(OptiMSM®) | 1000 mg | High clearly legible in the photo |
Claims printed on the packaging:
“Science-Based Nutrition™” · “Healthy Hair, Skin, Nails, & Joint Support*” · “Dietary Supplement” · “Supports Joint Mobility*” · “Chondroitin Works To Enhance Joint Comfort*” · “MSM Supports Joint Health & Benefits Hair, Skin, and Nails*” · “Contains Shellfish (crab and shrimp shells)” · “Store in a cool dry place.”
Read by a vision model from 5 listing photos — verbatim extraction; OCR errors possible. Spot a mistake? It will be corrected on review.
Where it sells
We found a brand storefront, but we could not match any price on it to this exact product when we checked.
Official brand domain: www.doctorsbest.com. This storefront does not expose a complete public catalog count.
Reference links for identification only — LookCloser has no affiliate relationships and earns nothing from any link on this page.
Ingredient science
No knowledge-base entry yet for this formula's active ingredients — entries are added as the KB grows. Absence of a science card is a coverage gap, not a judgment.
Ingredient science — NIH references
Potassium — NIH ODS · MedlinePlus · PubMed (16,128) · no UL; supplements capped at 99 mg OTC
Reference data from the NIH Office of Dietary Supplements, IOM Dietary Reference Intakes, and PubMed. A Tolerable Upper Intake Level is a documented reference figure, not a safety verdict — both the listed amount and the reference are shown for your own judgment. LookCloser gives no medical advice.
Record lc-9b623a3b · built September 03, 2026 · lookcloser.ai · corrections@lookcloser.ai