Say goodbye to your baby’s allergy symptoms

  • Once your baby’s diet no longer contains milk protein, her symptoms may improve in a few days, but it might take a few weeks for her symptoms to disappear.
  • Children often outgrow cow’s milk protein allergy between the ages of two and five years old.

If your baby has a cow’s milk protein allergy, one of your first questions may be, “How long will it be before she feels better?” The answer depends on a few things: her symptoms and whether she gets breastmilk or formula.

Breastfed babies
Once you eliminate cow’s milk proteins from your diet, allergy symptoms may begin to improve within 6 to 8 days. It may take a couple of weeks for your breastmilk to be completely clear of the proteins. And you might have to wait a little longer for all of your baby’s allergy symptoms to go away.

Formula-fed babies
Formula-fed babies who switch to a hypoallergenic formula can expect to see symptoms improve within a few days. After 2 to 4 weeks, symptoms should disappear. If your baby has severe symptoms, more than one food allergy, or if her symptoms don’t improve on an extensively hydrolyzed formula, your doctor may switch her to an amino acid-based formula.

Your baby’s doctor may suggest that you continue a hypoallergenic formula until her first birthday. In some babies, cow’s milk proteins may be gradually brought back into her diet after the first year, but it’s important to work with the doctor or dietitian to know how and when.

Will she always have a milk allergy?
The good news is cow’s milk protein allergy is one of the allergies children often outgrow. This usually happens by the time they are two to five years old, and 80% of children will be cow’s milk protein allergy-free by their sixteenth birthday. Allergies to eggs, soy and wheat are also often outgrown; however, allergies to peanuts, tree nuts, fish or shellfish may be life long.

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