Dietary Supplement. Pure, Pharmaceutical Grade. Fat-Soluble Form of Thiamine. Vegetarian Benfotiamine is a more bioavailable and physiologically active derivative of Thiamine. Unlike regular thiamine, a water-soluble nutrient also known as Vitamin B-1, Benfotiamine is lipid soluble. Benfotiamine readily passes through intestinal mucosal cells, where it is converted into physiologically active thiamine. And clinical research has shown that Benfotiamine s unique open-ringed structure, making it a fat-soluble nutrient, increases its bioavailability. Contains no added yeast, sugar, salt, starch, soy, wheat, gluten, dairy, artificial colors, preservatives, or animal products.