You can often buy a complete suppliment that you add to the meat. It will have everything you could possibly need in one powder (or similar substance). Some feel that all that supplimenting is not necessary, and only suppliment with a few things (bone meal for calcium, omega 3's for skin and coat, possibly a digestive enzyme, things like that). You shouldn't need to suppliment extra taurine if you're feeding enough organ meat. (Heart is an excellent source of taurine).