Lo Carb Bar

Ingredients:

Soy protein isolate, whey protein concentrate, glycerine, canola oil, peanut butter, natural flavors, peanut flour, Vitamin and mineral blend (contains: Dicalcium phosphate, magnesium oxide, vitamin A palmitate, ascorbic acid, vitamin E acetate, niacinamide, zinc oxide, pantothenic acid, pyradoxin hydrochloride,copper gluconate, ergocalciferol, riboflavin, thiamin mononitrate, folic acid, biotin, potassium iodide, and cyanocobalamin), stevia extract.

What is the function of glycerine (aka glycerin or glycerol)?

Why don't they add iron?

What is stevia extrac and is it legal?