Thank you so much for all the info. I can't wait to get my Oxypowder . I have been very slim all my life, but I can tell that when I get constipated, I also put on some fat. As soon as things start moving again, I loose that fat. When I got into my mid 40's my constipation suddenly started getting worse, despit good diet and lots of exercise (5K every evening). That's why I think I need a good cleansing, but a fiber product did not agree with me at all. I am even having a hard time getting it all moving again. I think the fiber is stuck and won't come out. I've done all day fruit, tripple heavy duty laxatives, Epsom Salt and now the master cleanse. Maybe Oxypowder will be the answer here.