Kirkland SignatureKirkland Signature Optifiber, 26.8 Oz

what is wheat dextrin? does these mean it's gluten free or ? thank you

What is this product made from, wheat or chicory? The original Benefibre is Inulin (a vegetable fibre from chicory). I am gluten intolerant.

is there any difference in product Optifiber and benefiber. I know one is made in france the other here by costco.

Can I add this to home baked breads and other homemade foods as they are cooked? Thank you