full reportFull record · 661799414777 · back to the summary
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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.
The listing-image panel publishes an amount for each of its 1 listed row. That supports ingredient-by-ingredient review; it does not verify the contents.
| Panel row | Amount | %DV | What to notice |
|---|---|---|---|
| Vitamin D3 | 125mcg (5,000IU) mcg | — |
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-flash-1.5 Amounts are shown as listed panel data, not independently lab-tested contents.
Every check we ran
Confirmed evidence
These checks found support in the public record. They confirm specific facts, not the product as a whole.
USPTO lists Premier Research Labs, LP (LIMITED PARTNERSHIP; LIMITED LIABILITY COMPANY) in TEXAS, USA for the exact brand wordmark. This identifies the USPTO mark owner or applicant; it does not by itself prove who manufactures or sells this product.
Label #26067 “D3 Serum” (Premier Research Labs), entered 2013-10-25, with the full Supplement Facts on file — see the panel below. NIH marks this label as off-market (superseded or discontinued version). Company on file: Manufacturer — Premier Research Labs, Round Rock, TX.
Written reviews grew from 189 to 190 across 2026-07-09 – 2026-07-23 with no single manufactured spike (largest 30-day gain ~1).
Documented concerns
These are documented contradictions or claims that need more evidence. They are separate from missing data.
No contradictions or product-specific cautions were found at this check depth.
Unresolved public record
We looked for these signals but could not settle them from public sources. A gap is not a strike.
The current image extraction saved 1 ingredient name(s) but no usable amounts. This is a LookCloser processing gap, not evidence that the brand withheld the numbers; dose arithmetic is withheld until the panel is re-read.
Brand-level context only, not a finding about this product. Premier Research Labs LLC recalled a different or not-exactly-bound product on 2022-06-15: “Product spoiling over time; spoilage visible beneath lid/closure upon opening.” (status: Terminated). The recalled product was: “AloePro Dietary Supplement Made With Organic ALOE VERA LIQUID 16 FL Oz. (475 mL) PREMIER RESEARCH LABS UPC Code: 80773500137 packaged in plastic HDPW bottles” — not necessarily the product on this page. Verify at FDA’s recall database.
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.
Exact-listing history records written-review counts from 189 on 2026-07-09 to 190 on 2026-07-23 (net +1). Count movements can reflect sales, listing variants, collection resets, or moderation; this history does not establish whether reviews are authentic.
Check digit passes; no third-party database record found yet. Coverage gaps are common — not a strike.
What to ask and check
Check for yourself — no one’s permission needed
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.
Scan the barcode on the package and confirm it reads 661799414777.
A mismatch between the barcode on the box and the one on the listing is worth pausing over — it can indicate a different variant, a repack, or a counterfeit.
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
| Claim | Status | What we found |
|---|---|---|
| Benefit claim “…rced liquid vitamin D3 per five-drop dose to promote overall health and wellness BONE HEALTH & IM…” | 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 — 4 of 6 public signals
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
| UPC (barcode) — also our record ID | 661799414777 — via source listing UPC |
| Brand | Premier Research Labs |
| Source listing identifier | B006PFBVAC |
| Retailer listing title | Premier Research Labs Vitamin D3 Serum - Liquid Vitamin D Oil Drops fo… show full titlePremier Research Labs Vitamin D3 Serum - Liquid Vitamin D Oil Drops for Adults, Liquid D3 5000 IU, High Potency VIT D3 Liquid, Easy to Take Formula - 0.43 fl oz |
| USPTO brand owner | Premier Research Labs, LP · LIMITED PARTNERSHIP; LIMITED LIABILITY COMPANY · TEXAS, USA |
| Owner filed address | Building B, 3500 Wadley Place, Austin, TEXAS 78728, UNITED STATES |
From the label (photo-read)
| Serving size | 5 Drops (0.11 mL) |
| Servings per container | 114 |
| Net weight | 0.43 FL OZ (12.6 mL) |
| Badges printed on pack | U |
Supplement Facts panel (photo-read):
| Ingredient | Amount per serving | Reading confidence |
|---|---|---|
| Vitamin D3 | 125mcg (5,000IU) mcg | High clearly legible in the photo |
Claims printed on the packaging:
“High Potency Vitamin D3” · “Natural Source” · “DIETARY SUPPLEMENT” · “High Potency” · “Premier-Quality Ingredients” · “promote bone health” · “optimal mineral balance” · “natural immune response”
Read by a vision model from 6 listing photos — verbatim extraction; OCR errors possible. Spot a mistake? It will be corrected on review.
Supplement Facts — NIH DSLD registry
serving: 0.04 mL · contents: 0.5 fl. Oz. · label #26067 at dsld.od.nih.gov
| Ingredient | Amount per serving |
|---|---|
| Vitamin D3 | 2000 IU |
mcg = 1/1,000 of a mg. As filed in the NIH Dietary Supplement Label Database — the authoritative digitization of the printed label. Label versions can lag reformulations.
Where it sells
| Seller | Price |
|---|---|
| Retailer listing ↗ | $23.99 checked Jul 25, 2026 — varies by variant/session; price history pending |
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
Vitamin D — NIH ODS · MedlinePlus · PubMed (26,500) · UL 100 mcg (adults; 100 mcg = 4,000 IU)
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 661799414777 · built July 25, 2026 · lookcloser.ai · corrections@lookcloser.ai