Catessy cat milk is a supplementary food for cats over the 6 weeks this lactose reduced cat milk was developed especially for cats that love cows milk but find that high lactose content does not agree with them a high lactose content can cause digestive issues or diarrhoea catessy cat milk is lactose reduced so it is easier for your cat to digest catessy cat milk contains valuable vitamins vitamin a d3 and e and taurine so it is suited to your cats nutritional needs give your cat a del