From experience the Epsom Salt used to make me tired a lot due to dehydration. That was when I start doing Liver-Flush about three years ago. So I tried substitute colonics and coffee enema.
I come a long way, now taking the Epsom Salt is just piece of cake. I think my body tolerates the Epsom Salt better now. I found Epsom salt is better and easier.
My point here is the Epsom salt is not the enemy but the weak and toxic body.