A guide to switching formula to minimise any disturbance to your baby

If for some reason you want or need to switch to a different brand of infant or follow-on formula, there are a few things you should do.

Many babies will transition to a new formula easily, but some may be more sensitive to the taste of a new formulation and may also need to learn to ‘digest’ the new formula. In short, your little one may need a bit of time to get used to a new formula.

That’s why it makes sense to introduce a new formula gradually. If you are switching your baby to Diamond pro+ Premium Infant Formula or Follow-on-Formula, we suggest the following schedule.

Seven-day transition plan
Day One For your baby’s first morning feed, offer one bottle or feeding cup of Diamond pro+ Premium formula. For the remaining feeds for the day, offer the previous formula.
Day Two Offer Diamond pro+ Premium formula for the first two feeds of the day, then the previous formula for the remaining feeds.
Day Three Offer Diamond pro+ Premium formula for the first three feeds of the day, then the previous formula for the remaining feeds.
Days Four
to Seven
Continue this method until your baby has fully transitioned across to Diamond pro+ Premium formula, which may take around seven days.

The pace of transition will really just depend on how well your baby accepts the new formula. If everything is going smoothly, you may decide to change more quickly. Equally, even if you stick to the suggested schedule, it may still take your baby a few weeks after the transition to fully accept the new formula.

It may sound obvious, but make sure you follow the preparation instructions for the right formula during the changeover. The National Health and Medical Research Council says that changing formulas can increase the risk of incorrect preparation, as each brand uses slightly different amounts of formula and water to prepare. For the same reason, we don’t recommend mixing formula brands together.

When changing formula brands, the frequency, texture and colour of your baby’s bowel motions may also change. This is quite normal, but they should not be dry and solid, and nor should they be watery. If your baby’s bowel motions become dry and solid, check the new formula’s preparation instructions and feeding guide to ensure you’re following them correctly.

A formula-fed baby’s bowel motions are usually loose and mustard-yellow in colour (sometimes with milk curds), although sometimes they may have a green or orange appearance. If your baby is experiencing frequent, watery bowel motions (i.e. diarrhoea), consult your doctor or maternal and child health nurse.

Your baby should have around six or more wet nappies per day. The nappies should be soaked and contain a pale or colourless urine. If your baby’s urine becomes scanty and strong yellow in colour, read the preparation instructions and the feeding guide to check the formula is being prepared correctly.

If you have any concerns about your baby’s acceptance of a formula, consult your doctor or maternal and child health nurse. You can also talk to one of our infant nutrition experts if you have any questions about Diamond pro+ Premium Infant Formula, Follow-on Formula or Toddler Milk Drink.