Question: what is the best vitamin and mineral supplement for horses?
Answer: Vitamin K. ...  Copper. ...  Iron. ...  Selenium. ...  Iodine. ...  Cobalt. ...  Manganese. Manganese is required for carbohydrate and fat metabolism and also has a role in the production of joint cartilage. Zinc. Zinc is an important co-factor in many enzyme reactions in the body and has a particular role in skin health and wound healing.