The formula milks used in the treatment of gastroesophageal reflux disease fall into 2 main categories:
The hydrolysed formulas can be thought of as a partially digested form of cow’s milk. This means that the proteins have been broken down into smaller pieces but not quite to the building blocks of the proteins which are called amino acids.
Amino acid formulas are the most pre-digested form of milk as they contain only the amino acids and no full length proteins that can cause an allergic response.
Both these milks taste different to normal milk but babies adapt well to them. The more you digest a milk the more bitter it tastes to adults.