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Gold Standard 100% Casein

Optimum Nutrition · Supplements · 24g · casein
4.53rd party testedemerging evidence
7.6of 10
Optimum Nutrition Gold Standard 100% Casein
Good for: strength, recovery.

The score explained

evidence, testing and value, weighed before price

Why 7.6 of 10: Provisional: modest timing evidence, reference-brand execution.

what’s good
  • Slow overnight release
  • Tested
worth knowing
  • Not for post-workout

what the evidence says

Casein digests slowly, and small trials support pre-sleep casein for overnight muscle protein synthesis, particularly in trained people on structured programs. The honest summary: total daily protein still dominates outcomes, and casein's timing advantage is a modest optimisation on top, not a separate effect. Gold Standard Casein is the default execution of the pre-bed protein idea from the most trusted stable.

Plain-language assessment of the human evidence. No cherry-picked citations.

reviews

4.5· 3,300 reviews, aggregated

Most reviewers take it for strength and report it doing its job quietly. Ratings cluster around 4.5 stars across retailer sites, with price the main hesitation.

strengtheasy to toleratefair price
AI summary of public reviews