What is too much Selenium


Waiting on Equi-Analytical for my hay test results before finalizing a purchase from my feed store.  What is too much Selenium?  Thank you!

Sally in N.AZ

April 2013


Sally -
In what context do you mean?  The entire diet?  What's in a hay or a commercial product?
For a standard size horse, the recommended daily supplementation is 2mg in the entire diet.
EC Primary Response
West Coast
May 2004