45% Minimum Crude Protein, 9% Minimum Crude Fat, 4% Maximum Crude Fiber Made from a blend of fish meal, shrimp meal, soy and wheat flours, brewer's yeast, krill meal, fish oil, vitamins and preservatives with Erythromycin added. Prepared for our customers to provide the most efficient method of medicating your fish. Refer to the literature for best uses of Erythromycin for treating disease problems. FOR USE ON ORNAMENTAL FISH ONLY. DO NOT USE ON FISH INTENDED FOR HUMAN CONSUMPTION!