Atfter 30 years of gastric distress continually waiting for my next event, I started taking Metamucil, which changed my life. I have been on a fiber supplement for 15 years, currently Citrucel. I have tried to quit but so far I have not been successful. I am down to only once a day, from twice. I have been on the diet for a couple months. Before that is has been agradual process from low GI to low carb to Paelo to now BP. Each step being an improvement in my health and state of being. I have been wheat free for almost 6 months. What are BP position on fiber supplements. My impression is it is probably not BP and I am trying to wean myself, but so far I have not. I have always had a sensitive gut, certain foods would cause weeks of gastric distress. Except for that I am fairly healthy. I understand now that I have sensitivities to certain food grains, legumes. What are the down sides to taking fiber supplements.