I also had good results with Clarks parasite herbs, then went on to do the other parasite treatments she advised. I used the complete program - parasite, kidney, Liver Flushes and it brought me back to being able to work. But the problems kept coming back and it was many years before I found out that I had both Celiac Disease and non-Celiac Sprue (Leaky Gut). Clark did not write about the problems people have with gluten although she did put a few children on a gluten free diet while doing a parasite program. It would be a good idea to have the tests for CD after following a gluten challange diet. Quite a few people have been mis-diagnosed with various intestinal problems when they have CD or an intolerance to gluten in wheat , barley and rye.