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Protein One Peanut Butter Chocolate Protein Bar package front

Image: Open Food Facts

Protein bars

Protein One Peanut Butter Chocolate Protein Bar

Protein One Peanut Butter Chocolate Protein Bar: 10 g of protein and 100 calories per serving (10 g protein per 100 calories), with just 1 g sugar. That puts it among the most protein-dense bars in our catalog. It fits keto targets at 3 g net carbs per serving.

  • Keto-friendly: ≤5 g net carbs

Nutrition last checked October 15, 2026.

Where to buy

Snack Facts

Serving size 1 bar (27 g)

Calories
100
Protein
10 g
Total fat
4 g
Saturated fat
2 g
Total carbohydrate
9 g
Dietary fiber
6 g
Total sugars
1 g
Sodium
120 mg
Protein per 100 cal
10 g

Highlighted values pass our thresholds. Per serving, from the product label and Open Food Facts. Check the package you buy; recipes change.

Passes 5 of 5 checks

How Peanut Butter Chocolate Protein Bar measures up to our five lines, per serving.

  • Protein 10 g or morePasses
  • Calories under 200Passes
  • Sugar 5 g or lessPasses
  • Fiber 3 g or morePasses
  • Sodium under 400 mgPasses

What's good

  • Excellent protein density: 10 g protein per 100 calories
  • Low sugar: 1 g per serving
  • 6 g fiber per serving
  • Low sodium: 120 mg per serving
  • Keto-friendly by the numbers: 3 g net carbs per serving
  • Shelf-stable and easy to carry

What to watch

  • Ultra-processed (NOVA group 4)
  • Contains milk, peanuts, soy
  • Uses sweeteners or sugar alcohols some people avoid

Ingredients and allergens

Chicory root extract, soy protein isolate, whey protein isolate, maltitol, vegetable glycerin, maltitol syrup, milk protein isolate, palm kernel oil, partially hydrolyzed milk protein isolate, peanut flour, calcium caseinate, dutch cocoa (processed with alkali), peanut butter (peanuts), water, soy lecithin, nonfat dry milk solids, salt, peanut oil, natural and artificial flavor, stevia extract.

Contains: milk, peanuts, soy.

NOVA processing group 4 of 4.

Source record on Open Food Facts (opens in a new tab)

Frequently asked questions

How much protein is in Protein One Peanut Butter Chocolate Protein Bar?

Protein One Peanut Butter Chocolate Protein Bar has 10 g of protein per 1 bar (27 g) serving and 100 calories, which is 10 g of protein per 100 calories.

Is Protein One Peanut Butter Chocolate Protein Bar healthy?

It passes 5 of our 5 checks (protein 10 g or more, calories under 200, sugar 5 g or less, fiber 3 g or more, sodium under 400 mg). It is ultra-processed (NOVA group 4).

Is Protein One Peanut Butter Chocolate Protein Bar keto, vegan or gluten-free?

The label we have does not claim keto, vegan or gluten-free. It is not labelled keto, but at 3 g net carbs (carbs minus fiber) per serving it fits a keto plan by the numbers. Check the package for current claims and allergens.

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