“match label contents. USA MANUFACTURED & 3RD PARTY TESTED: This NatureWise supplement is”
Evidence →A testing body is named on the listing, but we found no lot-specific certificate of analysis.
Exact product checked · GTIN 00858081006400NatureWise · checked Jul 25, 2026 · on sale since Jul 28, 2016🇺🇸 USPTO wordmark owner · HeartWise Inc. · OREGON, USA
Quick read · NatureWise
NatureWise Vitamin D3 2000iu (50 mcg) 1-Year Supply for Immune…
Checked against public sources on July 25, 2026 · LookCloser does not sell or recommend supplements.
360softgels
360servings per container
Does the marketing hold up?
The barcode identity checks out · 858081006400. The barcode matches, so we are checking the right product rather than a look-alike.
Is the dose real?✓Panel read — 2 ingredients listed
What a serving costs$0.04per serving, at the checked price
Is it tested?Claimed — not yet checked
Who’s behind it?🇺🇸HeartWise Inc.corporation · OREGON, USA
Is it the real thing?✓Barcode matches outside records
Trouble on record?Recall check not run yeta gap in our records, not a finding about the product
“Couldn’t verify” means we looked and found no public proof — not a mark against the product. Most supplement claims cannot be independently verified by anyone, so grey is the normal state of this industry.
1◖ partly confirmed1? couldn’t verifyno contradictions · no recalls
Marketing claims, checked
The checks, one by one
The public sources did not settle the marketing promises on this label.
◐Partly confirmed1
Ingredient research can support context, but it is not a trial of this exact product.
?Couldn’t verify independently1
“TESTED: This NatureWise supplement is manufactured in the USA in a facility that follows cGMP and”
Evidence →“Made in USA” can describe only final bottling. Ingredient-sourcing records were not located for this product.
We looked and found no public proof. That does not count against the product.
Quick read · 2 useful findings
What is worth knowing.
Headlines first. Open evidence only when you want the source trail.
Checks outWho is behind it?
The barcode identity checks out · 858081006400.
The barcode matches, so we are checking the right product rather than a look-alike.
Evidence and sources
Open Food Facts resolves 858081006400 to "Vitamin D3 50 Mcg (2,000 Iu)" (naturewise) — consistent with this listing.
Locked evidence record →Open the full source-linked findingChecks outCan you trust the review pattern?
Reviews grew steadily — about 51 between January 29, 2026 to July 8, 2026, with no sudden spike.
Gradual growth is more ordinary. A sudden burst deserves a closer look.
Evidence and sources
Written reviews grew from 1709 to 1757 across 2026-01-31 – 2026-07-08 with no single manufactured spike (largest 30-day gain ~12).
Locked evidence record →Open the full source-linked findingWhat remains open 2
- Panel amounts still need a clearer source image.
- No matched to this exact product public label filing is saved in this record.
These are evidence gaps, not strikes against the product.
Who owns the brand wordmark?
🇺🇸
HeartWise Inc.Corporation · exact supplement-class mark for NATUREWISE
Filed address
472, 2973 Harbor Blvd., Costa Mesa, CALIFORNIA 92626, 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 ↗
Where it sells
Price check for this exact product
Amazon
Exact UPC/GTIN match$12.91
$0.04 per labeled serving
matching UPC/GTIN · checked Jul 26, 2026
View on Amazon ↗iHerb
Exact UPC/GTIN match$17.22
$0.05 per labeled serving
matching UPC/GTIN · checked Jul 25, 2026
View on iHerb ↗Target
Not confirmedNo exact listing saved
Search results remain not linked to this exact product until this retailer publishes the matching UPC/GTIN.
Search Target ↗Walmart
Not confirmedNo exact listing saved
Search results remain not linked to this exact product until this retailer publishes the matching UPC/GTIN.
Search Walmart ↗Same UPC/GTIN observed across 2 sellers. Amazon was lowest at $12.91; iHerb was highest at $17.22 — a $4.31 range at check time.
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.