Harley was treated for ulcers twice since we've had him (5 yrs). He does not live a stressful life, has access to forage 24/7 in slow feeder nets or pasture, and beet pulp + hay cubes as well as a balanced range of minerals customized for him after hay analysis. However, my daughter's new riding coach noticed he swishes his tail when she does up the girth so she suggested we put him on an ulcer-prevention med. She recommended Comfort Gut, which is essentially charcoal. Thoughts? I know that the theory is that toxins bind to it, but he shouldn't have a lot of toxins in his diet anyway. I just struggle with the idea of feeding my horse charcoal I guess. And it isn't cheap at 80$ a month (over and above the hundreds of $$$ I spend on supps, etc.).