24 essential vitamins & minerals plus taurine, specifically designed to balance the recipes in the "Complete & Balanced for Cats" cookbook by Hilary Watson or formulate your own recipes using the free software at www.hilarysblend.ca 100% fit for human consumption. 100% active, no fillers, no preservatives, no additives. Hypoallergenic, no proteins or allergens, suitable for cats with allergies. One 250g jar will last an average size cat about 1.5 to 2 months.