Changing the Type of Milk (Infant Formula)
What it is
The type of milk or infant formula may be changed to better meet the baby’s needs or on the recommendation of a healthcare professional. For example, this may involve changing formulas or introducing a type of milk suited to the baby’s age. This sheet is for babies aged 0 to 11 months.
What you can do at home
What to do
- Change the type of milk only when necessary or when recommended by a healthcare professional.
Introduce the new milk gradually, using one of the following methods
- For a few days, gradually replace the previous milk with the new milk, increasing the proportion of new milk each day.
- Or gradually replace bottles of the previous milk with bottles of the new milk.
- Position the baby properly for bottle-feeding.
- Make sure the baby is drinking enough.
- Give the baby time to adjust to the new milk.
- If the baby has an intolerance to cow’s milk protein or lactose, follow the doctor’s recommendations.
- Watch for symptoms such as vomiting, diarrhea (watery stools), gas, or abdominal pain.
- If needed, see the Food Allergies or Intolerances health advice sheet.
What to avoid
- Changing the type of milk frequently or trying several types over a short period.
- Cow’s or goat’s milk before 9 months of age.
- Adding any other food or ingredient, such as sugar, to the bottle unless recommended by a healthcare professional.
When to seek medical attention
Inadequate weight gain
Diarrhea (watery stools) and gas after every feeding
Frequent vomiting after feedings
Need help?
Call Info-Santé at 811, Option 1, to speak with a nurse at any time.
Go to the pharmacy for advice on medications or treatment.
Make an appointment at your medical clinic or CLSC.
If you do not have a family doctor, go to gap.soinsvirtuels or call 811, Option 3.
When to go to the hospital right away
Symptoms of a severe allergic reaction (redness, itchy skin, swelling of the lips, tongue, or face), along with at least one of the following:
- high-pitched breathing sounds (stridor) or difficulty breathing.
- bluish or purplish lips or fingers.
- feeling weak or dizzy, or loss of consciousness.
- very fast heartbeat.
- stomach pain, vomiting, or diarrhea.