Dietary Supplement. Natural. High potency. TwinLab Magnesium Caps are easier to swallow and assimilate. Well tolerated by most highly allergic individuals. No tablet binders, coating or colorings. Free of the most common allergens such as corn, soy, yeast, rice, barley, wheat, lactose (milk sugar) and all milk, citrus, fish and egg products. No added flavorings, sugars, salt, artificial sweeteners, colorings, preservatives or salicylates.