Dietary Supplement. 100% Natural Chelated Boron. Tri-Boron capsules are of the highest quality and purity available. No tablet binders, coatings or colorings. Free of corn, soy, yeast, wheat, milk and egg products. No added flavorings, sugars, salt, artificial sweeteners, colorings or preservatives. Tri-Boron is a unique synergistic combination of three highly utilizable, 100% natural chelated sources of the trace mineral boron. Packaged in a glass bottle for maximum stability, quality and freshness.