Now® inositol powder: cellular health inositol is a non-essential member of the b-complex family with dietary sources from both animal and plant foods. The form of inositol used in this product is myo-inositol, the most abundant form of this nutrient. Inositol is found in all cell membranes, with the highest concentration in the brain and central nervous system, where it plays an important role in neurotransmitter signaling. Inositol is also critical; for the proper action of. Lipid metabolism and for the maintenance of cellular calcium balance. Supports healthy membrane function in myo-inositol form vegetarian/vegan kosher. Now inositol powder healthy - 1 lb (622 servings) lbs.