If you haven’t done a Safeguard or Panacur
purge on your horses, do that first. My “hard keeper” mare that I
couldn’t put or keep weight on is now a pretty easy keeper after the
purge last year. I did another this winter. Also, my
friend’s 19 yr old, rapidly losing weight last year, stopped the weight
loss immediately and started putting weight on after the purge. It’s
worth a try, especially since it’s the only treatment that will get rid
of most of the encysted small strongyles your horses
may have. And after the purge, yes some probiotics
would be good. I just use yogurt.