Big-O Bar

21 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. 

O15 Nutrition Big O Bar Fruity Cereal Banner

Customer Reviews
5.0 Based on 21 Reviews
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Mark N.
United States United States

Great combination of macros, and great tasting too!

Jeremy M.
United States United States
Great protein bar!

Wasn’t expecting a “birthday cake” flavored bar to be so good. I’ve had similar flavors in different brands and they are all chalky or to thick. This flavor was really damn good. And the bars texture is great, it falls apart in your mouth, easy to chew, digest with no complaints about the flavor. Just ordered some fruity pebble flavor to try!

Shafer S.
United States United States
Great Protein Bar

Great flavor, no chalkiness, will be buying again for sure.

Paige H.
United States United States
Amazing bar

Best bar ever. These and the out right bars are amazing

Joe R.
United States United States
Awesome taste and texture

Amazing. I eat one a day. Flavor and nutrition profile is perfect to get extra calories in to gain size.

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.