“GMP”
Evidence →“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.
Exact product checked · GTIN 00850053522604KAPPA NUTRITION · checked Aug 16, 2026 · on sale since Dec 3, 2023🇺🇸 USPTO wordmark owner · Mando International LLC · TEXAS, USA
Quick read · KAPPA NUTRITION
KAPPA NUTRITION Sleep 60
Checked against public sources on August 16, 2026 · LookCloser does not sell or recommend supplements.
60capsules
60servings per container
Does the marketing hold up?
Ingredient amounts are hidden inside “SLEEP 60® ADVANCED COMPLEX”. The panel lists “SLEEP 60® ADVANCED COMPLEX” (705 mg) as a combined amount. A blend total can’t tell you whether any single ingredient reaches a dose used in research.
Is the dose real?✓Listing and panel agreeboth say 60 mg of Melatonin
What a serving costs$0.22per serving, at the checked price
Is it tested?No testing claim made
Who’s behind it?🇺🇸Mando International LLClimited liability company · TEXAS, USA
Is it the real thing?✓Barcode matches outside records
Trouble on record?✓No recalls found
“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.
2◖ partly confirmed1? couldn’t verifyno contradictions · no recalls
The label itself
What the Supplement Facts panel says
| SLEEP 60® ADVANCED COMPLEX | 705 mg |
|---|---|
| Melatonin | 60 mg |
Printed on the package: MADE IN USA · NON GMO · GMP · TESTED · GLUTEN FREE · PURE VEGAN
We read 2 lines from the package photograph. It is our transcript of the label, not the manufacturer’s panel, and it may be incomplete.
Marketing claims, checked
The checks, one by one
The public sources did not settle the marketing promises on this label.
◐Partly confirmed2
“IMMUNE HEALTH WITH BETTER SLEEP: Lack of sleep can weaken the body's immune system, making quality sleep essential for overall”
Evidence →Published research exists for ingredients in this formula. Whether this product’s doses match those studies could not be confirmed.
Ingredient research can support context, but it is not a trial of this exact product.
?Couldn’t verify independently1
“IN”
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.
Marketing language, not scored
HIGH POTENCY SUPERIOR ABSORPTION
Quick read · 1 useful finding
What is worth knowing.
Headlines first. Open evidence only when you want the source trail.
CheckedCan you trust the review pattern?
Reviews rose from 59 to 82 between July 26, 2025 and April 8, 2026 — no sudden jump.
A count that moves steadily is ordinary. A sudden burst is what deserves a closer look.
Evidence and sources
Written reviews rose from 59 to 82 between July 26, 2025 and April 8, 2026. The largest rise inside any single 30-day window was about 7, so the count moved in steps rather than in one burst.
Locked evidence record →Open the full source-linked findingWhat remains open 3
- No FDA recall matched this brand in the current search.
- We have not found a public label filing for this exact product.
- Barcode checksum is valid; no independent product record was found.
These are evidence gaps, not strikes against the product.
Who owns the brand wordmark?
🇺🇸
Mando International LLCLimited Liability Company · exact supplement-class mark for KAPPA NUTRITION
Filed address
6845 Solitude Creek Ct, Frisco, TEXAS 75036, 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 ↗
Research behind the findings
Dose and research context
The label amount is shown beside the range used in the linked ingredient studies.
Dose vs research
Melatonin
STUDIED RANGE066 mg
60 mg per serving — above the 0.5–5 mg/day used in the linked studies.
Linked ingredient research · label amount, not a recommendation
Background reading
What the research says about these amounts
Not a score. Studies disagree with each other and change over time, so this sits beside the evidence rather than counting toward it — it is here so you can read the sources yourself.
The panel lists 60 mg of melatonin per serving. Studies we found used 0.5 mg–5 mg a day, so this sits above that range.
0studied 0.5 mg–5 mg
Study ranges differ between trials and change as research changes. This is background reading, not a pass, a failure, or a recommendation.
Where it sells
Price check for this exact product
Amazon
Exact UPC/GTIN match$12.99
$0.22 per labeled serving
matching UPC/GTIN · checked Aug 17, 2026
View on Amazon ↗iHerb
Not confirmedNo exact listing saved
We only show a price when the seller publishes the same barcode as the bottle. We haven’t found that match here.
Search iHerb ↗Target
Not confirmedNo exact listing saved
We only show a price when the seller publishes the same barcode as the bottle. We haven’t found that match here.
Search Target ↗Walmart
Not confirmedNo exact listing saved
We only show a price when the seller publishes the same barcode as the bottle. We haven’t found that match here.
Search Walmart ↗Only one exact price was available at build time; prices change by date, seller, and promotion.
Reference prices only · no affiliate links · every compared seller must publish the matching UPC/GTIN.
Want to inspect the evidence?
The full report shows every source, the exact unresolved question, and the documentation that would settle it.
Record built August 16, 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.