NutriCology®/Allergy Research Group® products have set the standard for hypoallergenic nutritional supplements since our inception in 1979. Our products are the purest and highest quality obtainable and are generally made without yeast, corn, wheat, soy, dairy products, flavorings, colors, salt, sugar, starch, common preservatives, binders and excipients. the only ingredients are those listed on the label, except where refined micro-crystalline cellulose is used as a filler and silicon dioxide is used as a flow agent. To ensure optimal stability, our products are stored in a humidity and temperature controlled environment. Although NutriCology®/Allergy Research Group® supplements were designed with the allergic individual in mind, they may be used by anyone since they are generally the cleanest and purest available.