Hey folks, I tested 'strongly positive' to a urine test done recently for Hydrogen Sulfide. My doc recommended Questran. I have read mixed reports about it on here so far. Seems it will either be good or bad depending on the individual - but at least it will do something. I've also heard of Refaxamin and Bismuth Subsalicylate as possible treatment options for this, but have not spoken about them with my doc. Is anyone familiar with any of these three? I'm also aware that clay can absorb some bad guys and the little reading I've done so far suggests it can absorb Hydrogen Sulfide. If so, then perhaps oral clay (calcium bentonite) may be of benefit, but having not done much reading on it yet, this is pure speculation on my part. Anyone have any experience here?