Decoding Your Baby's Digestion: A Guide to Baby Poo, Formula Changes & Feeding Transitions

One of the biggest surprises of parenthood? How much time you'll spend thinking about baby poo.

From colour and consistency to frequency and smell, it's completely normal to wonder whether what you're seeing in your baby's diaper is normal. Add in a formula transition and many parents find themselves asking even more questions.

If you're considering switching to Kendamil or have recently made the change, this guide explains what to expect, what's normal during a transition, and when it's worth speaking to your healthcare provider.

Why Does Baby Poo Change So Often?

A baby's digestive system is still developing during their first year of life. Many factors can influence what appears in their diaper, including:

• Age
• Feeding method
• Formula type
• Introduction of solid foods
• Minor illnesses
• Hydration levels

Because of this, it's completely normal for your baby's poo to change over time.

What Does "Normal" Baby Poo Look Like?

The truth is that normal baby poo comes in many colours and textures.

Yellow or Mustard-Coloured

Often seen in breastfed babies, but can also occur in formula-fed babies. This colour is generally considered normal.

Tan or Light Brown

Very common among formula-fed babies.

Green

Can sometimes occur due to normal digestive processes, changes in feeding, or the iron content in formula. Green stools are often completely normal unless accompanied by other concerning symptoms.

Softer or Firmer Stools

Formula-fed babies often have stools that are slightly firmer than breastfed babies. Small day-to-day variations are common.

What Happens When Switching Formula?

Parents often worry that any change in poo means something has gone wrong. In reality, digestive changes are common whenever babies transition between formulas.

If you're moving from a traditional formula to Kendamil, you may notice temporary changes while your baby's digestive system adjusts. 

Switching From Enfamil® or Similac®

Because formulations differ, it's normal to notice temporary changes during the adjustment period, including:

• Changes in stool colour
• Changes in stool frequency
• Slight differences in stool consistency
• Changes in feeding patterns

If you have any concerns about your baby's feeding, digestion, growth, or overall wellbeing during the transition, please speak with a healthcare professional for personalised advice and support. 

What Makes Kendamil Different?

Kendamil uses a whole milk base and contains naturally occurring Milk Fat Globule Membrane (MFGM). MFGM is a naturally occurring component of milk fat that is present in breast milk and whole milk. Our recipe is designed to provide a premium feeding option for families while using carefully selected ingredients.

Kendamil also contains:

• Whole milk fats
• No palm oil
• No soy oil
• Plant-based DHA
• Vegetarian-friendly ingredients

Because of these differences, some babies may experience temporary digestive adjustments when transitioning from another formula.

How Long Does It Take for a Baby to Adjust to a New Formula?

Every baby is different. Some babies appear to transition immediately, while others may take a little longer to adapt. Parents may notice temporary digestive changes during the first few days or weeks following a switch.

Patience is often key during this period, as digestive systems need time to adapt to a new feeding routine.

Common Questions During a Formula Transition

"My Baby's Poo Is Green. Should I Be Worried?"

Green stools are often completely normal. They can occur naturally during digestive changes and are not usually a reason for concern on their own.

"My Baby Is Pooing More Often"

Changes in frequency can occur during a formula transition. Some babies may temporarily have more frequent bowel movements, while others may have fewer.

"The Poo Looks Different"

Differences in texture and appearance are common whenever feeding patterns change. A temporary change does not automatically mean a formula isn't suitable.

Understanding Signs of Formula Tolerance

According to nutrition professionals, babies generally tolerate formula well when they:

• Feed comfortably
• Continue growing appropriately
• Produce regular wet diapers
• Appear content between feeds
• Follow their usual developmental patterns

Because every baby is unique, parents should always discuss individual concerns with their healthcare provider. For additional information, parents can visit resources provided by Dietitians of Canada and their UnlockFood platform.

When Should You Contact a Healthcare Professional?

While many digestive changes are normal, parents should seek medical advice if they notice:

• Blood in stools
• Persistent vomiting
• Signs of dehydration
• Significant feeding difficulties
• Poor weight gain
• Severe or prolonged digestive symptoms

Your healthcare provider can help determine whether further assessment is needed.

Formula Changes and Parent Confidence

It's natural to closely monitor every diaper when introducing a new formula. In fact, many parents tell us they become expert poo detectives during the transition process.

The good news is that temporary digestive changes are common and often simply reflect your baby's digestive system adapting to something new. Rather than focusing on a single diaper, it can be more helpful to look at the overall picture:

• Is your baby feeding well?
• Are they producing wet diapers?
• Do they seem generally comfortable?
• Are they continuing to grow and develop?

These broader indicators often provide a clearer picture of how your baby is doing.

Frequently Asked Questions

Should I switch formulas gradually?

Some parents prefer a gradual transition, while others switch directly. If you're unsure what's right for your baby, speak with your healthcare provider.

Does Kendamil reduce colic?

Every baby is different, and no formula can guarantee specific digestive outcomes. Kendamil uses a whole milk base with naturally occurring MFGM and is designed to be gentle on little tummies.

Why does my baby's poo look different after switching?

Changes in stool colour, texture, and frequency can be a normal part of transitioning to a new formula.

How long should I wait before deciding if a formula suits my baby?

Adjustment periods vary from baby to baby. If you have concerns about feeding or digestion, speak with your healthcare professional.

Supporting Your Baby's Feeding Journey

Every baby is unique, and so is every digestive system. Whether you're introducing formula for the first time or transitioning from another brand, it's normal to notice changes along the way.

At Kendamil, we're proud to offer Canadian families a premium whole milk formula while providing carefully selected ingredients parents can feel good about. Remember: a changing diaper doesn't always mean there's a problem. More often, it's simply part of your baby's growing and developing digestive system.

If you ever have concerns, your healthcare provider is always the best source of advice for your individual baby.