DOSSIER #002 // protein
Evidence: StrongProtein
• Whey isolate • Pea protein • Milk protein
COMPOUND PROFILE Essential amino acids / leucine
THE 30-SECOND VERDICT
Protein intake around training is well supported. Proprietary “muscle coffee” blends are still protein plus flavor.
Whey isolate is a convenient leucine source. Plant proteins need larger servings for the same leucine.
WHAT PEOPLE USE IT FOR
- ✓ Post-training drinks
- ✓ Breakfast shakes
WHAT THE EVIDENCE ACTUALLY PROVES
- ● Leucine per serving is more informative than a vibe word on the pouch.
- ✕ Not a hormone. Isolate is not “cleaner” in a moral sense — it is more filtered.
REGULATORY JURISDICTION BLUEPRINT
🇪🇺 EUROPEAN UNION (EFSA) Authorized food / supplement depending on form
Protein as food. Sports foods follow composition labeling.
🇺🇸 UNITED STATES (FDA / DSHEA) Dietary supplement
Usually conventional food. Some products use supplement labeling.
Forms
Whey isolateWhey concentratePeaBlends
Sources
- Jäger et al. ISSN protein position stand (2017)
Last reviewed 2026-08-12 · Lab desk