Big-O Bar

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74 reviews
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The first product from the new brand O15 Nutrition by Mr. Olympia Brandon Curry. The 100g Big-O bar represents whole-food meal replacement at its finest. It is built on 4 key ingredients (peanut butter, honey, 100% whey protein hydrolysate, and MCT oil) to provide satiation and nutrient-rich calories that your body can utilize for physical performance and recovery.

O15 Nutrition Big O Bar Callouts

The Peanut Butter and MCT Oil provide a strong healthy fat base for energy and cognitive support.  The super-food honey is the primary carbohydrate giving you a low-glycemic energy source. Each bar boasts 24g or more of premium protein from 100% Whey Hydrolysate and Peanut Butter. 

These ingredients will not cause GI discomfort since they are derived from whole foods. Ingredients that are easier to digest equals more nutrients toward muscle tissue repair, glycogen replenishment, and cognitive function. 

Available in Birthday Cake and Fruit Cereal, Big-O bars can be consumed as a snack or as a meal in and of itself. 

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Customer Reviews
4.9 Based on 74 Reviews
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Kim Z.
United States

Best protein bars

I am completely addicted to these delicious protein bars! I always buy them from as they are dependable and quick to ship. I definitely recommend this product and company for all your fitness needs!

Hunter A.
United States United States

I liked these

They were pretty tasty for a protein bar

Alexander W.
United States United States

Bars are amazing

They do a good job of keeping me full.

Braden A.
United States United States

Great pre workout snack

I’m not very hungry before working it and I do want a good amount of calories for my sessions, these are my go to snack. They taste great and have a good amount of calories, but it doesn’t make me full and I can lift and not be bloated.

Darryl L.
United States United States

Big 0

I liked it it was good I would recommend it to my friends

Nutrition Info

Warning Concerning California Residents: This product may contain chemicals known to the State of California to cause cancer and birth defects or reproductive harm.