Caffeine Gluten-Free | Chia & Flax Seeds Non GMO Project Verified Certified Gluten-Free The ProBar to Support Your Active Lifestyle Looking for a protein bar that resembles nature rather than a science experiment? Good. Because we packed  20 grams of plant protein and plenty of real, recognizable ingredients into this bar. And it does more than build your strength-it boasts chia and flax seeds to keep you going strong. Energy Bar - Each serving contains 55 mg of caffeine from yerba mate.ProBar