ACE-High is one of our key PET multivitamin products. It is a specialist product mainly used by veterinary surgeons to correct certain very unbalanced diets. For general use we recommend our Nutrobal and Arkvits. ACE High contains high levels of vitamins A, C & E. The classic terrapin problem of swollen eyes and pneumonia is a manifestation of vitamin A deficiency. Poor hatchability in chelonia (and other) eggs is thought to be linked with vitamin A and /or E deficiency. These higher levels of vitamins are also beneficial to all species during periods of stress and disease. Vitamins A and E are both involved in helping the body resist infection. Vitamin A is essential for healthy mucous membranes such as the mouth, lungs and gut. Vitamin E has been shown to boost the immune mechanism in some species. Vitamin C is used up by the body very quickly when it is under stress and so must be replaced.