Daily's Coral Calcium Powder is the highest quality coral from the Caribbean. Daily Coral Calcium is taken from land deposits of ancient coral, thereby assuring that ocean coral reefs are not disturbed. Coral calcium from land deposits are free of pollutants that were introduced by man into the ocean, because the coral was formed long before modern man was there. All Daily coral products are mined and processed following strict pharmaceutical standards and further processed and packaged under strict American standards at Daily Manufacturing's FDA inspected facility. Daily Coral Calcium is ground extremely fine (7-10 micron). Assuring that all of the calcium forms a colloidal suspension and is easily absorbed. Non-GMO Daily Coral Calcium in powder form provides Calcium 500 mg per 1/4 tsp.