T-Rex Tortoise Supplement - Salad TopperT Rex Tortoise Supplement is a salad topper calcium supplement dust with added vitamins and minerals. If youre feeding your tortoise veggies, there is no need for using a variety of different supplements. Just sprinkle this dust onto the veggies before feeding, and combined with the dietary value of the veggies, Tortoise Supplement will complete the vitamin, nutrient, mineral and trace element requirements for your pets feeding needs.