thinkThin Protein & Fiber Bars Creamy Peanut Butter. thinkThin? Creamy Peanut Butter High Protein Bars. 20g protein. 0g sugar per serving. Low GI. Gluten free. I know how hard it is to eat well when you re always on the go. That s why I created thinkThin? high protein bars loaded with 20g of hunger-fighting protein and absolutely no gluten or added sugars. Every bite of my creamy peanut butter bar is packed with the delicious combination of creamy peanut butter and luscious milk chocolate. It s a guilt-free way to get the energy and nutrition your body needs- anytime anywhere. Visit us at: thinkproducts.com. 866.98THINK. Certified gluten-free by GFCO. Made with non GMO soy protein. GI labs tested.