I originally bought these when my grocery store was out of generic Metamucil capsules and OMG... I have never had such volume of gas loudly escape me in my life. The farts were so loud they were impossible to hide even going to the bathroom and trying to muffle them. One of them was so legendary my friend will never let me live it down. It wasnt just the sound, but the sheer volume. I felt like I was a human balloon deflating. I dont know if everyones GI system reacts the same to different brands of fiber, but this one was a bad match for me.