“GMP-certified” describes factory processes, not what is in the bottle. The claim does not name a certifier or public register that a shopper can check.

ZHOU Black Seed Oil Capsules
Checked against public sources on July 21, 2026 · LookCloser does not sell or recommend supplements.
Does the marketing hold up?
Every ingredient shows its amount · 3 ingredients listed. Every ingredient shows its real amount — nothing is hidden in a proprietary blend.
“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.
What the Supplement Facts panel says
| Calories | 10 |
|---|---|
| Total Fat | 1 g |
| Black Cumin (Nigella sativa) (seed oil) | 1300 mg |
Printed on the package: LAB VERIFIED · VEGAN · NON-GMO · GMP · VEGETARIAN · GLUTEN FREE · LAB VERIFED · NON-GHO
We read 3 lines from the package photograph. It is our transcript of the label, not the manufacturer’s panel, and it may be incomplete.
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.
Marketing language, not scored
Extra Strength Antioxidant*
What is worth knowing.
Headlines first. Open evidence only when you want the source trail.
Every ingredient shows its amount · 3 ingredients listed.
Every ingredient shows its real amount — nothing is hidden in a proprietary blend.
Evidence and sources
The panel gives a per-ingredient amount rather than hiding quantities inside a proprietary blend, so each one can be compared to published research.
Locked evidence record →Open the full source-linked findingRegistered in NIH's supplement label database (DSLD)
A government label filing makes the listed formula easier to inspect and compare over time.
Evidence and sources
Label #286205 “Black Seed Oil” (ZHOU), entered 2023-06-22, with the full Supplement Facts on file. Company on file: Distributor — ZHOU Nutrition Zhou, Inc., Park City, UT.
Locked evidence record →Open the full source-linked findingWhat remains open 1
- No FDA recall matched this brand in the current search.
These are evidence gaps, not strikes against the product.
Dose and research context
We could not match an amount on this product to a studied range for the same ingredient, so these links are ingredient background rather than a measurement of this product.
Where you can check or buy it
Open related seller leads before buying, then confirm the flavor, count, and serving size. Their prices are visible, but LookCloser does not claim savings until the pages share a UPC/GTIN.
Amazon
Submitted listingLowest New observed via Keepa on 2026-09-02.
View on Amazon ↗Brand website
Official product-page candidate · UPC absentUseful official shopping lead; excluded from exact price comparisons.
Black Seed Oil Capsules · Default Title. The page matches the same named product, but omits the identifier needed to bind the exact sellable unit.
Check brand website ↗iHerb
Not confirmedNo matching product page was confirmed in the current record. Search results cannot be attached as this product until the UPC/GTIN matches.
Search iHerb ↗Target
Not confirmedNo matching product page was confirmed in the current record. Search results cannot be attached as this product until the UPC/GTIN matches.
Search Target ↗Walmart
Not confirmedNo matching product page was confirmed in the current record. Search results cannot be attached as this product until the UPC/GTIN matches.
Search Walmart ↗Prices and stock are point-in-time observations. Related pages are never used as product evidence. No affiliate links; LookCloser earns nothing from these sellers.
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 September 03, 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.