Hi all, has anyone here experienced this after taking some new supplement or medication? The first time I took calcium ascorbate, B6, B12, Antihistamines, DAO, enzymes, cortef...they all seemed to work great, at least I was feeling a lot better but within 2-3 days they all stopped working completely. I take a new supplement and sometimes it works really good but stops pretty fast. If I continue taking it I get all kind of weird sideeffects but the positive first experience is gone completely. If I wait for several weeks I can do it all over again, positive effect on the first day, no effect on 2nd, bad effect on 3rd. I read on a forum for histamine intolerance. Those people make the same experience. They take DAO or antihistamines and have success on the first 1-2 days but then it stops. Why is this so? Does the body adapt? Any ideas?