Exact product checked · GTIN 00661799414777Premier Research Labs · checked Jul 25, 2026 · on sale since Dec 3, 2011🇺🇸 USPTO wordmark owner · Premier Research Labs, LP · TEXAS, USA
Quick read · Premier Research Labs
Premier Research Labs Vitamin D3 Serum
Checked against public sources on July 25, 2026 · LookCloser does not sell or recommend supplements.
Does the marketing hold up?
FDA recall appears in this brand's history An exact-product recall is a direct signal. A different product from the same firm is company context, not a strike against this item.
Is the dose real?✓Panel read — 1 ingredient listed
What a serving costs$0.21per serving, at the checked price
Is it tested?No testing claim made
Who’s behind it?🇺🇸Premier Research Labs, LPlimited partnership; limited liability company · TEXAS, USA
Is it the real thing?✓Barcode matches outside records
Trouble on record?Brand history — not this product
Quick read · 3 useful findings
What is worth knowing.
Headlines first. Open evidence only when you want the source trail.
Needs explanationAny trouble in public records?
FDA recall appears in this brand's history
An exact-product recall is a direct signal. A different product from the same firm is company context, not a strike against this item.
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: …
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 NIH marks this label as off-market (superseded or discontinued version).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.
Barcode checksum is valid; no independent product record was found.
These are evidence gaps, not strikes against the product.
Who owns the brand wordmark?
🇺🇸
Premier Research Labs, LPLimited Partnership; Limited Liability Company · exact supplement-class mark for PREMIER RESEARCH LABS
Registration4346054
Registered2013-06-04
AssignmentsYes
Filed address Building B, 3500 Wadley Place, Austin, TEXAS 78728, UNITED STATES
USPTO identifies the public owner or applicant behind this brand wordmark. This does not by itself identify the product manufacturer or prove where the product was made. Open USPTO source ↗
Only one exact price was available at build time; prices change by date, seller, and promotion.
No official brand storefront is confirmed in this record. That is neutral, but it prevents a direct brand-price, label, review, and document check.
Reference prices only · no affiliate links · every compared seller must publish the matching UPC/GTIN.
Want the complete evidence trail?
The summary stops at product-specific facts. The full report preserves every source, calculation, limitation, and unresolved check for review or sharing.
Record built July 25, 2026. Sources: source listing observed at check time · USPTO Trademark Search · Keepa exact-listing history · NIH / published research · certification and regulator records where available. LookCloser publishes evidence and gaps; it does not advise for or against any supplement. Evidence-based corrections welcome.
