Do you find the flax makes pinto/white horses more suseptable(sp) to sun posioning? I've used linseed in the past, but a few years back my daughter's paint horse was being boarded where a lot of the other 4-Hers had their horses. They supplemented with a small amount of Ultium. Her horse, who had never done this before, ended up with sun posioning on his back in a matter of a few days. Needless to say I banned him to the barn during the daylight hours. That's when someone told me not to feed Paints/Pinto/white horses flax and what it would do. Guess they'd had the same thing happen to one of their horses earlier in the year.The show horses get ground flax seed as a supplement. Everyone is regularly dewormed and free access to minerals / salt.