Enfamil® ProSobee® helps reduce fussiness and gas due to sensitivity to milk-based formula. It uses soy protein and is tailored to be naturally easy on baby's tummy. ProSobee offers complete nutrition for healthy growth during baby's first year. Enfamil #1 brand recommended by pediatricians. Concentrated Liquid, Must Add Water Plant-Sourced Protein Soy for Sensitive Tummy