The aim of the study is to assess the hypoallergenicity of a new thickened extensively hydrolyzed formula.

Inclusion Criteria:

• between 1 and 12 months old
• having a cow milk allergy confirmed by a positive double-blind food challenge performed in the last 3 months,
• whose parent(s) signed the informed consent form

Exclusion Criteria:

• Infants mainly or exclusively breastfed,
• Infants having a weight at inclusion < 2500g,
• Infants who refused to drink an extensively hydrolyzed formula anytime prior to inclusion,
• Infants fed an amino acid based formula
• Infants who had an anaphylactic reaction in the past,