I bought the magnet from my chiropractor, so I don't know much about it. I think I saw the receptionist taking it out of a bag that said Mikken on it, but it's not like the magnets that I had bought from Nikkena couple of years ago. It's about 1 1/2 X 2 1/2 inches and it's thin. He told me to tape it onto my rib cage near my liver. I go to a different chiropractor now, but I can ask him if he knows anything about them next time I see him.