 Infants and patients fed via a gastrostomy tube can also be given a ketogenic diet . Parents make up a prescribed powdered formula , such as KetoCal , into a liquid feed . Gastrostomy 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 . KetoCal 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 unflavoured or in an artificially sweetened vanilla flavour and is suitable for tube or oral feeding . Other formula products include KetoVolve and Ketonia . Alternatively , a liquid ketogenic diet may be produced by combining Ross Carbohydrate Free soy formula with Microlipid and Polycose . 
