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 a cleaner 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
Products covered
Key Products
We don't link to buy products we flag. Read why above, or see Nordic Naturals, which meets our top criteria.
- Gold Standard 100% Whey
- Serious Mass (see alert)
- Amino Energy