Dietary Supplements of Vitamins E, C, and β-Carotene to Reduce Oxidative Stress in Horses: An Overview

•Horses are animals that face various stress situations throughout their daily activities.•Oxidative stress is the excess generation of free radicals, causing damage to the horse's health.•Supplements of vitamin E, C, and β-carotene in the diet show beneficial effects on horses.•Vitamin E, C and β-carotene prevent diseases associated with the oxidative stress.