The T-Rex Leopard Gecko is a high-quality supplement that provides calcium, phosphorus, magnesium, zinc, manganese, selenium, copper and iron to the body. This all-in-one super food also includes vitamins B12, D3, A, C and E as well as minerals such as zinc, manganese, selenium and copper. The T-Rex Leopard Gecko is perfect for those who are looking for an all-in-one super food that provides all of their daily needs.