Oxypowder dependance

I've been taking Oxypowder for over 2 years now for constipation . When I started I had completely messed up my body by doing daily enemas for a year. My peristaltic movements went from "very active" to "zero". Oxypowder worked and I continued to take a maintenance dose of 4 every other day. I do parasite cleanses twice year (herbal ones) and then I take Oxy every day.

This winter has been really bad. Eczema on my face and eyes that I’ve never had before. I did an extra month of parasite cleansing and took more Oxypowder . I had to eliminate foods all over again. I even wondered if I was reacting to oxypowder but I wasn’t. The eczema calmed down but has not gone. Now I find I need to take 4 Oxy every day.

What bothers me is that if I stop taking it I have such bloat and blockage (and moods!) it’s scarey. The Oxy people say that it is impossible to say what a regular dose is as everyone reacts differently.
Also, what is really weird is that I think I absorb the magnesium (though it is not supposed to happen). I always sleep better taking it and I have tried other magnesium supplements without such good effect.
I should also add that BM’s are not brilliant - loose and explosive and never really enough but better than nothing!

I do all the obvious things – drink water, walk 3 miles daily, eat veg. (can't take probiotics because of history of parasites - I still react)