Copper Sulfate?

A friend told me she uses a feed thru copper sulfate and that it keeps her horses from having worms and works great.  Is this safe, healthy and ok to do. 
Kirsten M.

I wouldn’t feed it at all. Copper is very toxic and honestly it can get many other minerals toally out of balance. See our RED Cal product for a much better option. Page 21 of our magazine has a great article and you’ll find more by using the links at the right on this page.