Dietary Supplement. Plus magnesium, vitamin D and cofactors. Chelated boron with calcium. Tri-Boron Plus capsules are easier to swallow and assimilate. A University of Maryland study published in American Pharmacy has concluded that many brands of calcium tablets dissolve so slowly that they pass from the stomach before they can take effect. Tri-Boron Plus capsules disintegrate and break down quickly in the stomach. Tri-Boron Plus is a combination of three natural, highly utilizable, chelated sources of the trace mineral boron. Studies indicate that boron improves calcium metabolism and utilization. Tri-Boron Plus Capsules synergistically combine the trace mineral boron with calcium, magnesium, and vitamin D plus trace minerals zinc, manganese and copper which are integral co-factors for several enzymes involved in bone metabolism. Packaged in a glass bottle for maximum stability, quality and freshness. This product is manufactured at our own state of the art facility. (This statement has not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure or prevent any disease.)