Essential Trace Element. Technical description: Additives per 25ml Trace Element: E4 Copper (as Cupric chelate of glycine, hydrate): 200mg. Note: These products provides an easily absorbed form of Copper. Copper should be supplemented in areas where deficiencies exist. It is important to know the required amount of Copper supplementation necessary in your area. If in any doubt consult your Veterinarian or Nutritionist. Usage instructions: Instructions for Proper Use: Adult Horses: Feed 25ml per day. Foals & Yearlings: Feed 15ml per day.