How Much Vitamin A Is Toxic To Dogs?

How Much Vitamin A Is Toxic To Dogs? For dogs, the requirement is 3,333 IU/kg of diet fed, with up to 333,300 IU/kg of diet considered to be safe. Signs associated with acute vitamin A toxicity include general malaise, anorexia, nausea, peeling skin, weakness, tremors, convulsions, paralysis, and death. Will vitamin A hurt a dog?