Multi-Nutrients Pack by Schiff/Bio Foods. A Vegetarian Multiple. The demand for supplements to ensure optimal health and performance has increased, as consumers take responsibility for their own health and well-being. Multi-nutrient packs contain natural ingredients formulated with whole food concentrates, our body's primary source of energy. Each Nutri-lock packet seals in freshness and potency while serving as an impervious barrier to light, air, moisture and other potentially destructive environmental factors. This maintains a quality product for people concerned with maintaining their health and fitness.