 Infants and patients fed via a gastrostomy tube can also be given a ketogenic diet . Parents make up a prescribed powdered formula , such as <unk> , into a liquid feed . <unk> feeding avoids any issues with palatability , and bottle @-@ fed infants readily accept the ketogenic formula . Some studies have found this liquid feed to be more efficacious and associated with lower total cholesterol than a solid ketogenic diet . <unk> is a nutritionally complete food containing milk protein and is supplemented with amino acids , fat , carbohydrate , vitamins , minerals and trace elements . It is used to administer the 4 : 1 ratio classic ketogenic diet in children over one year . The formula is available in both 3 : 1 and 4 : 1 ratios , either <unk> or in an artificially sweetened vanilla flavour and is suitable for tube or oral feeding . Other formula products include <unk> and <unk> . Alternatively , a liquid ketogenic diet may be produced by combining Ross <unk> Free soy formula with <unk> and <unk> . 
