Hey Daniel I used to use vitamins, I would grind them in a coffee grinder but I haven’t done that for the last couple times because I didn’t have any vitamins laying around. it doesn’t seem to have made much of a difference so I just stoped doing it. I add shrimp and bananas because those two ingredients besides their nutrition have helped keep the beef heart from dissolving into the water, it’s kind of a binder. The paprika brings out the red in the fish. If I had yellows I wouldn’t add it.