Will a few glugs of corn oil a day do any harm?

I feed 1/2 mug of corn oil twice a day to my mare, this is on vets orders though I may add for her joints as she has ringbone, side bones and DJD.

But she is gleaming right now after being on it for about a month and a half :D
 
Thanks guys, if it's only a small amount do I need to worry about it unbalancing the diet? The Outshine already contains vitE and selenium which is what I'm a bit worried about.
 
Top