thanks spaniel - how much do i feed (do you know?) Also if you see my other post today, you were right yesterday i will be leaving her on 1 bute a day - thanks x
Mag Ox isn't generally available from feed merchants - Calmag is but has a lower proportion of magnesium. Someone on ebay is selling Mag Ox or email Metabolic Horse 2006@MetabolicHorse.Co.UK and they will send you a price list.
I feed mine in a daily small carrier feed, damped if necessary - started with a couple of teaspoonfuls (he is 16.2hh warmblood) and assessed the effect from there. You will find if you overfeed they get runny droppings, but I think with most horses that would take huge quantities.