daily epson salts

I have searched for the old post talking about taking epson salts daily and guess I just can't come up with the right keywords to find them.
I was wondering about the amounts some said they had taken daily. I am looking into this as an alternative to laxitives for my dad who has a serious back injury and the vicadin they are pumping him full of is making it impossible for him to go. anyone used it as a daily suppliment to stay regular when having problems going? ANd is there a time limit on how long one can use them to do this?

thanks, Ghostfalcon Tweet