Epsom is a town in England where they mine the MINERAL magnesium.
It is a pure product. The process of making magnesium sulfate chrystallizes the mineral and it turns out looking like another english product Maldon salt which is a salt!I find it absolutely lifepending to use it! Then again I have experienced vile so called gallstone attacks and stuck stones/pancreatis. The ES makes my flushing (also psychologically) 100 % safe. The bitter test for a few seconds is nearly unbearable and one must stay focused and not whossy....I always think of the pains of giving birth as the worst thing I ever experienced as a physical beeing, and compare everything to that!(also the pains of the stuck stones)
We are all different, and react accordingly, to everything.