Hypervitaminosis A: Hypervitaminiosis A is a true toxicity and is usually caused iatrogenicly by an overdose injection of concentrated vitamin A preparation by the veterinarian. Clinical signs mimic a dermal burn and include sloughing of the skin. Treatment resembles burn wound therapy, including antibiotics, addressing the open wound and administering parenteral fluid.
Injections with highly concentrated vitamin A (e.g. 500,000 IU/ml) should be avoided and this preparation given only orally. Aquasol A (by Astra) is a good alternative for injection because it contains only 50,000 IU/ml.