Nutramigen 1 LGG is a hypoallergenic formula that has been specially designed to meet the daily nutritional needs of babies with a cow's milk allergy. It contains a unique combination of extensively hydrolysed (broken down) milk proteins & a friendly bacteria, LGG. Together, they help to improve the dietary management of a cow's milk allergy. Nutramigen is nutritionally complete, which means it can be used as the sole source of nutrition from birth to 6 months old.