Calcium For GDM

It's typically made of aluminum oxide and are the most common type of filtration media, activated alumina balls are used to remove chlorine, heavy metals, and other contaminants from water. These balls are used in a variety of water treatment systems, such as point-of-entry and point-of-use filters. Activated alumina balls are used in industries such as mining, water treatment, and many others. https://kexing-chemical.com/product/activated-alumina/

My doctor prescribed Caltrate