Our take
Why It’s on Our Radar
We don't recommend it as a clean pick on ownership: it's owned by the public company Glanbia. Its flagship whey tested relatively well, but its Serious Mass gainer was flagged for arsenic. Here as a rated cautionary reference.
What's inside
Ingredients & Safety
Its Gold Standard whey tested among the safer products in Consumer Reports (Oct 2025), but its Serious Mass gainer showed inorganic arsenic at ~2× the safe daily limit, and the mass gainer is maltodextrin-based.
Ingredient list reviewed
- Maltodextrin also listed as Dextrin, Modified Food Starch Watch
- Whey Protein Blend
- Creatine
Formula scope: the disclosed ingredient list captured for this review. Formulas can differ by product, scent, country, and date; compare the current package with this list before deciding.
Want another top-tier option? Nordic Naturals in Supplements & Protein currently meets our top criteria. Review its formula scope and cited records before deciding.
Who owns it
Ownership & Independence
A wholly-owned subsidiary of Glanbia plc (public), acquired in 2008 (~$315M); not independent.
- Founded
- 1986
- Headquarters
- Downers Grove, IL
- Control
- Owned by Glanbia plc (public): acquired 2008
Where to buy
Key Products
As an Amazon Associate, we earn from qualifying purchases. Commissions never influence scores.
Check the exact formula, size, seller, and availability on Amazon. Search links show results that may include other brands. Links open in a new tab.
- Gold Standard 100% Whey Search on Amazon →
- Serious Mass (see alert) Search on Amazon →
- Amino Energy Search on Amazon →