Mg-28 is an isotope of magnesium. It is used for many health issues. One of these issues is cancer. A pill was created with mg-28 to cure cancer. When the isotope encounters the cancer cell, it sticks onto the cell and completely swallows it. Because Mg is the third most used metal, it is extremely strong. The cancer cell dissenagrates inside of mg-28 because of the magnesium. Magnesium is a regularly taken vitamin for some, so the pill does no harm in your body!