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| Attribute | Pure Protein Pure Protein Bar — Chocolate Peanut Caramel | RXBAR RXBAR — Peanut Butter | Quest Nutrition Quest Protein Bar — Cookies & Cream | Isopure Whey Protein Isolate — Creamy Vanilla |
|---|---|---|---|---|
| Type | Protein bar | Protein bar | Protein bar | Whey isolate |
| Protein per serving | 20 g | 12 g | 21 g | 25 g |
| Cost per 20 g protein | — | — | — | — |
| Calories | — | — | — | — |
| Sugar | — | — | — | — |
| Our rating | — | — | — | — |
| Third-party tested | Not listed | Not listed | Not listed | Not listed |