I’m not sure I am actually going to go this route as I haven’t found the majority of supplements of any kind to be particularly effective, but it’s something I’ve been considering for my older guy who holds a lot of worry, has his whole life, and while he’s a whole lot better than he used to be and continues to improve slowly over time, he’s just one of those horses that is always going to be sensitive to change. A recent barn move totally threw him out of whack and he’s not settling well, so I am going to get him A) back in a barn with a more fixed routine, and B) do a month of Gastroguard.
Once the Gastroguard is done I am toying with the idea of putting him on some sort of feed-through gut support, but it’s not something I’ve done for any of my other horses - past or present - as constant access to good forage, lots of turnout and correct work has kept them all happy and content. This guy just does not do well with major changes and at nearly 17 I don’t think much is going to improve in that regard.
What do folks feed for digestive support when all the other essentials are taken care of? He keeps good weight - he drops it fast when he gets stressed but it comes back fairly easily - his coat quality is good, his manure is normal, etc. This is really just to minimize the potential effects that “the worry” has on him internally and help him manage through some of the other changes so they don’t have such a ripple effect.