“Made in USA” can describe only final bottling. Ingredient-sourcing records were not located for this product.

Nutramax Avmacol Extra Strength Sulforaphane Producing…
Checked against public sources on August 1, 2026 · LookCloser does not sell or recommend supplements.
Does the marketing hold up?
Ingredient amounts are hidden inside “Proprietary Sulforaphane Glucosinolate (Glucoraphanin) & Myr”. The panel lists “Proprietary Sulforaphane Glucosinolate (Glucoraphanin) & Myr” (480 mg) as a combined amount. A blend total can’t tell you whether any single ingredient reaches a dose used in research.
“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
| Total Carbohydrates | less than 1 g |
|---|---|
| Vitamin C (from Ascorbic Acid) | 25 mg |
| Proprietary Sulforaphane Glucosinolate (Glucoraphanin) & Myrosinase Blend | 480 mg |
Printed on the package: NSF · CONTENTS CERTIFIED · GLUTEN FREE · VEGETARIAN · Made In USA
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.
?Couldn’t verify independently1
We looked and found no public proof. That does not count against the product.
Marketing language, not scored
EXTRA STRENGTH
What is worth knowing.
Headlines first. Open evidence only when you want the source trail.
What 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.
Filed address
946 Quality Drive, Lancaster, SOUTH CAROLINA 29720, 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 ↗
Price check for this exact product
Amazon
Exact UPC/GTIN match$1.17 per labeled serving
matching UPC/GTIN · checked Aug 1, 2026
View on Amazon ↗iHerb
Not confirmedWe 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 confirmedWe 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 confirmedWe 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 02, 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.