From Optimum Nutrition comes Optimal Protein Diet Bars. As the name suggests, they are designed for ‘dieters’ – people looking to curb fat gains. Optimum Nutrition have achieved this by formulating their Optimal Protein Diet Bars with no sugar, only 19g of carbs, 2.5g of fat, and a tidy 20g Whey Protein Isolate, Calcium Caseinate and Soy Protein Isolate blend. Each bar is 50g in weight, and only 180 calories. They are also free from collagen and gelatin.

Optimal Protein Diet Bars come in boxes of 15, available in the following flavors: Chocolate Mint, Fudge Truffle, Peanut Butter and Toasted Coconut.