Switching Formulas and Milk Allergies

• Switching from one milk-based formula to another milk-based formula is not helpful for any symptom. It is also not harmful.
• Switching from milk formula to soy formula is helpful for cow's milk allergy (1-2% of infants), severe diarrhea (from acquired lactase deficiency) and vegetarianism.
• Switching formulas for excessive crying, spitting up or gas is rarely helpful.
• Don't switch formulas without discussing it with your child's doctor.