Best whey protein powders
Ranked by leucine per serving — the metric that decides whether one scoop triggers muscle protein synthesis.
Weighing whey against casein? See our whey vs casein comparison — identical density, different digestion speed.
Deciding whether the isolate premium is worth it? See whey isolate vs concentrate — same brand, same certification, only the filtration differs.
| Product | Protein | Leucine | Density | Quality |
|---|---|---|---|---|
| Nutricost Whey Protein Isolate whey isolate | 30g 130 kcal | 3.15g | 92.3% Platinum | Complete |
| Transparent Labs 100% Grass-Fed Whey Protein Isolate whey isolate | 28g 120 kcal | 2.94g | 93.3% Platinum | Complete |
| BulkSupplements Whey Protein Isolate 90% whey isolate | 27g 115 kcal | 2.84g | 93.9% Platinum | Complete |
| Dymatize ISO100 Hydrolyzed 100% Whey Isolate whey isolate | 25g 130 kcal | 2.7g | 76.9% Platinum | Complete |
| NOW Sports Whey Protein Isolate whey isolate | 25g 100 kcal | 2.7g | 100% Platinum | Complete |
| Naked Nutrition Naked Whey whey concentrate | 25g 120 kcal | 2.6g | 83.3% Platinum | Complete |
| Optimum Nutrition Gold Standard 100% Whey whey blend | 24g 120 kcal | 2.5g | 80% Platinum | Complete |
| NOW Sports Whey Protein Concentrate, Unflavored whey concentrate | 24g 130 kcal | 2.47g | 73.8% Platinum | Complete |
| BulkSupplements Whey Protein Concentrate 80% whey concentrate | 23g 120 kcal | 2.43g | 76.7% Platinum | Complete |
| Legion Whey+ whey isolate | 22g 120 kcal | 2.31g | 73.3% Platinum | Complete |