Brewers Yeast tablets

[Shilasdair]

I wonder if anyone can tell me the best/cheapest place to get BY tablets, and how many to feed a 550kg horse?
She's a fussy feeder and probably won't eat powder in her feed, but I can sneak tablets into apples (her weakness ).
Thanks
S

 

[Oberon]

Not sure. They horses on it on our yard love the taste of it - even my fussy boy.