So about a month ago I started taking dietary fiber in the capsule form. Seemed like a good idea at the time. Right about the time I reordered the stuff I started getting the hives. I aint had the hives since I was a preteen kid. So I go off with the buds on our get away & start noticing shortness of breath, & more hives. @ the time we were spending most of our time outside so I just assumed most of that was seasonal allergies from pollen. Second bottle arrives & I'm taking them & the hives are getting worse as is the tightness in my chest. Last night was one of the most miserable I've had in a long time. Been eating antihistamines to the point I can't stay awake. Shortly after breakfast I start reading the fine print on the bottle. Sure enough allergic reaction are hives & tightness in the chest. Glad I didn't eat any fiber @ breakfast. Already went on Amazon to return the bottle. I hope the hives start clearing up because they suck as does the way my chest feels. Hopefully I won't need to see the doctor & get a steroid pack to get right!