This non-inferiority study aims to determine whether a hydrolysed rice protein formula is as effective as a cow's milk protein based extensively hydrolysed formula using a double-blind, randomised-controlled design over a 28-day intervention period followed by a 2-month follow-up period in infants 0-13 months of age presenting with symptoms/clinical history suggestive of cow's milk allergy. The primary outcome is growth, and secondary outcomes are gastrointestinal tolerance, and differences in intake, allergic symptoms, parental QOL, acceptability, dietary intake, and safety.