Baby Refusing the Bottle: Common Reasons and What to Try

There are few things more stressful than watching your baby turn their little head away from a bottle and refuse to take a feed. Although you may be panicking, you’re not alone in this struggle. Bottle refusal is common, often short-lived, and almost always fixable with a little patience and a few small tweaks.

At Kendamil, we hear this from parents all the time. So we have pulled together the most common reasons why a baby will not take the bottle, along with gentle, practical things you can try today to help your little one feed more happily.

Why is my baby refusing the bottle?

Every baby is different, but bottle refusal usually comes down to a handful of familiar culprits. Here are six of the most common.

1. They prefer the comfort of the breast

For a breastfed baby refusing the bottle, the reason is often the simplest one. Skin, warmth, smell, and closeness are hard to replicate. Younger babies especially can be very particular about how milk arrives, and a silicone teat is a big change from mum. This is one of the most common causes of bottle refusal in the early weeks and months.

2. The teat flow or shape does not suit them

Teats come in different shapes, sizes, and flow speeds. A slow-flow teat can feel too much like hard work for a hungrier, older baby, while a fast-flow teat can overwhelm a newborn refusing the bottle. Some babies also prefer a wider, breast-shaped teat, while others do better with a narrower, softer one. If your baby latches, feeds for a moment, then pushes the bottle away, the teat is often the first thing worth changing.

3. The milk is too hot or too cold

Babies are surprisingly sensitive to temperature. Milk that is too cool can feel unfamiliar, especially for a breastfed baby who is used to the natural warmth of a feed. Milk that is a little too warm can be off-putting too. Aim for body temperature, roughly 37°C, which usually feels just warm to the wrist. You can probably make a bottle in your sleep by now but double check our guide on how to prepare a bottle for a refresher.

4. They are teething or feeling under the weather

Sore gums, a cold, an ear infection, or reflux can all make sucking painful or uncomfortable, and can send even the most reliable bottle feeder into a spell of baby bottle refusal. If your baby is dribbling more than usual, gnawing on hands, has a temperature, or seems generally not themselves, teething or a minor illness may be behind it.

5. They are distracted, tired, or overstimulated

Older babies in particular can become very interested in the world around them. Bright lights, background noise, TV, siblings, or a busy kitchen can all make it hard to settle for a feed. A tired or overstimulated baby may also arch, cry, and refuse the bottle even when they are hungry.

6. They are not actually hungry yet

It sounds obvious, but if your baby has recently fed, is going through a slower growth patch, or is starting solids, they may simply not want as much milk as before. What can look like sudden bottle refusal is sometimes just a natural dip in appetite.

What to try when your baby won't take the bottle

If your baby is refusing the bottle, small changes can often make a big difference. Try one or two of these at a time so you can see what is really helping.

• 1. Let someone else offer the bottle: For a breastfed baby, the parent who normally breastfeeds can be the hardest person to take a bottle from. Ask your partner, a grandparent, or a trusted friend to try. It can also help if mum leaves the room, or even the house, so your baby is not tempted by the familiar smell of breastmilk.
• 2. Experiment with a different teat: Try a slower or faster flow, or a different shape. A wider, softer, breast-shaped teat often works well when introducing a bottle to a breastfed baby. Warming the teat under the tap for a moment before offering can also make it feel more natural in the mouth.
• 3. Get the temperature right: Warm the milk to body temperature and always test a drop on the inside of your wrist first. If your baby is used to breastmilk, aim for a similar warmth. For formula, follow the instructions on the pack and never microwave, as this can create hot spots.
• 4. Feed in a calm, familiar place: Choose somewhere quiet, dim the lights, and put phones and screens away. Some babies also prefer to be held facing outwards rather than in the usual cradle position.
• 5. Offer the bottle before they get too hungry: A frantic, ravenous baby is not usually in the mood to try something new. Offer the bottle when they are calm, alert, and just starting to show hunger cues. If you are combination feeding, try a bottle midway through a feed rather than right at the start.
• 6. Keep it gentle and give it time: Never force the teat into your baby's mouth. Instead, let them latch onto it in their own time, the way they would at the breast. Some babies take a few tries over several days to accept the bottle, and that is completely normal. If today does not work, offer again later or tomorrow.

When to speak to your health visitor or GP

Most cases of bottle refusal pass with a little patience and a few tweaks. But it is worth speaking to your health visitor, GP, or midwife if your baby is showing signs of dehydration or is not gaining weight as expected.

Trust your instincts. You know your baby best.

Choosing a formula

If you are switching to formula, or combining breast and bottle (called combination feeding), it can help to choose a formula that is made with ingredients you can trust, such as Kendamil Classic or Kendamil Organic.

Baby refusing the bottle: FAQs

Why is my baby suddenly refusing the bottle?

Sudden bottle refusal is usually caused by teething, illness, a growth or feeding change, or a switch in teat or formula. Check for signs of a cold, sore gums, or reflux, and think about anything that has changed recently, from the teat shape to the milk temperature. In most cases, a small adjustment or a day or two of patience is enough to sort it.

How long does bottle refusal usually last?

For most babies, bottle refusal lasts a few days to a couple of weeks. Once you have identified the cause and made a few small changes, your baby will often settle back into feeding happily. If you are worried about their intake or weight, speak to your health visitor or GP.

Can teething cause a baby to refuse the bottle?

Yes, teething can absolutely cause a baby to refuse the bottle. Sore, swollen gums make sucking uncomfortable, so babies may take a few sips and then pull away, or refuse the teat altogether. Try a chilled teether before the feed, a gentle gum massage, and speak to your pharmacist about age-appropriate relief if your baby is really uncomfortable.

How do I introduce a bottle to a breastfed baby?

To introduce a bottle to a breastfed baby and maintain breast milk supply, guidelines recommend waiting until breastfeeding is well-established, at least 6 to 8 weeks after the birth. Have someone other than mum offer a bottle feed, use a wide, breast-shaped teat, and warm the milk to body temperature. Offer the bottle when your baby is calm and only mildly hungry, and keep the first attempts short and pressure-free.

What if my baby refuses the bottle and I have to go back to work?

Start practising with the bottle a few weeks before you return, offering it once a day at a relaxed time. Try different people, teats, and settings until you find what works. For older babies you can also offer expressed breastmilk or formula in a small open beaker or a paced-feeding bottle. Your childminder or nursery will have seen this many times before.

Could refusing the bottle mean my baby does not like the formula?

It can, especially if you have recently changed brands. Some babies like the creamy taste of whole milk formulas like Kendamil Classic. If you suspect the formula is the issue, switch gradually over several days rather than all at once. For more information on how to switch formulas, take a look at our formula transition guide.