Rep-Cal Tortoise Food is formulated to ensure proper growth and health by providing complete and balanced nutrition. It is a veterinarian recommended food containing natural plant and fruit ingredients tortoises love and provides the 100% complete daily nutrition they need. Rep-Cal Tortoise Food has been tested successfully for tortoises by reptile veterinarians. It is fortified with optimal levels of vitamins and minerals like calcium and Vitamin D3 so no other food or supplements are required.