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| Attribute | RXBAR RXBAR — Peanut Butter | Quest Nutrition Quest Protein Bar — Chocolate Chip Cookie Dough | KOS Organic Plant-Based Protein — Vanilla | Isopure Whey Protein Isolate — Unflavored |
|---|---|---|---|---|
| Type | Protein bar | Protein bar | Plant protein | Whey isolate |
| Protein per serving | 12 g | 21 g | 20 g | 25 g |
| Cost per 20 g protein | — | — | — | — |
| Calories | — | — | — | — |
| Sugar | — | — | — | — |
| Our rating | — | — | — | — |
| Third-party tested | Not listed | Not listed | Not listed | Not listed |