Hi. I purchase and it is my only thing I do online magnesium glycinate. I saw a holisitc doc who suggested this type. I am not sure if it is really better then one at a store well of course not the oxide which is a no but anyhow I am creature of habit. For me and supp spliting. I do that with calcium and d one morn and one night,glucosamine,omegas. The rest I try to take with a big meal but who knows if that is good or bad.