Even if you already have a favorite SPIRU-TEIN® flavor, you might have a desire to create your own flavor, or flavor combo. That's why Nature's Plus developed a simple, unsweetened SPIRU-TEIN so consumers can use their own taste imagination a and create the SPIRU-TEIN they really want! The possibilities are endless! Add fruit, nuts, cereals, anything healthy and natural! SPIRU-TEIN Simply Natural has all of the vitamins, minerals, vegetarian protein and special nutrients that make the SPIRU-TEIN formula unique.