This is a multivitamin and mineral mixture with extra amounts of the vitamin A,C, &E. These provide the higher levels of vitamins required by certain groups. Larger lizards and chelonia in particular are known to require extra vitamin A. Runny nose syndrone in chelonia responds in some cases to supplementation with A.C & E. It is also beneficial to all species during periods of stress and disease when special demands are made. Vitamin A & E are both involved in helping the body resist infection