Here you can find answers to the most common enquiries we receive.

However if we haven’t answered your question, please do not hesitate to contact us.

Bottles & Teats

Are NUK Glass Bottles suitable for freezing?

No our glass bottles are unsuitable for freezing; if you wish to freeze breast or formula milk you can use any of our plastic bottles or the breast milk containers that are supplied with our breast pumps.

I am using a NUK Bottle but the milk is coming out too fast for my baby, what can I do?

Most NUK Bottles come with a Size 1 (0-6 months) Medium size feed hole as standard however we do also offer replacement teats with Small feed holes. In this instance we would suggest using the teat with a Small feed hole as it will reduce the amount of feed and the speed at which it flows out of the bottle. Small feed holes are particularly suitable for young babies and thin liquids such as breast milk or water.

I am finding that when I shake the NUK Bottle to mix the milk formula it is leaking slightly, why is this?

All NUK Bottles come supplied with a sealing disk, this little cap fits over the neck of the bottle, with it in place and the screw ring tightened the bottle is effectively sealed, this prevents milk or feed leaking into the teat or indeed out of the bottle. The sealing disc is particularly useful for preventing spillages whilst you are out and about and it also helps when it comes to mixing formula.

In hospital I used a NUK Bottle with a disposable, pre-sterilised teat, where can I purchase this type of disposable teat?

The NUK Teats supplied into UK children’s hospitals are not available commercially. However the good news is that the orthodontic teat shape, which mimics that of a mother’s nipple during breastfeeding, is identical on both the NUK hospital teats and the NUK First Choice+ Teats which are available commercially. Because they share the same shape most babies will be able to make an easy transition from the NUK hospital teats to NUK First Choice+, which is available in silicone or latex. Latex is softer, more nipple like and closer to the feel of the NUK teats used in hospitals. Please click here for more information on NUK First Choice+.

What is the difference between silicone and latex teats?

Silicone and latex teats both have their benefits and it is possible to switch between the two materials. Silicone teats are made from a synthetic material and tend to be more durable than latex, they are less affected by temperature, exposure to sunlight or fatty foods.

NUK Latex TeatLatex is a natural material which can age more quickly; exposure to direct sunlight for example will cause a latex teat to age and thus they should be stored carefully. The natural ageing is however a good indicator as to when the teat needs to be replaced. Latex is popular with many parents because it is softer and more flexible which can make it easier for some babies to adapt to, it is also more bite-resistant. If your baby refuses a latex teat because of how it tastes, simply boil the teat in milk for 3 minutes to neutralise the taste.

The NUK TeatFor hygiene reasons it is recommended that all teats, regardless of whether they are silicone or latex, should be replaced after 1-2 months or earlier if bite marks or cracks become apparent. The choice of silicone or latex is a personal choice but there is a NUK Teat to cater for both needs.

Why do latex teats become sticky?

NUK latex teats are made from rubber milk (latex), a natural raw material that is susceptible to ageing. Becoming ‘sticky’ or ‘swelling’ are the typical signs of ageing that can appear after approximately 4 weeks of use. The fat content in food and exposure to direct light or high temperatures can accelerate the ageing process. To avoid ageing it is recommended that latex teats are stored carefully away from direct light and high temperatures and then replaced after 1-2 months of use.

Are latex teats safe to use?

Absolutely. All NUK latex teats are tested to satisfy the most stringent international quality standards which include EN 14350. All NUK Teats are also BPA free.

Can latex teats trigger allergies?

NUK latex teats are immunologically tested for their latex allergen content. The test results show us that there is no measureable risk potential. However even products that contain less than 30 mg/kg of soluble proteins, such as a latex teat can cause an allergic reaction to people who have a latex allergy. If your child experiences an allergic reaction whilst using a latex teat we would recommend that you stop using that teat immediately and switch to silicone instead.

What size teat should I purchase?
NUK Sizes

NUK Teats are available in Size 1 (for children aged 0-6 months*) and Size 2 (for children aged 6-18 months*). There is a choice of different feed holes to ensure a consistent natural flow regardless of the consistency of the feed: Small for thin liquids such as breast milk, Medium for formula milk and Large for thicker feeds.

*Please note that the age range specified is only a recommendation and may vary by child.

Do NUK Teats have a feed hole size indicator?

Yes, this is embossed on the base of the teat itself, directly underneath the NUK Air System: S for Small feed hole, M for Medium and L for Large. Unlike some other feeding brands, NUK Teats are designed to deliver a consistent flow rate, which simulates natural breastfeeding, regardless of the type of feed. The feed hole sizes are specifically designed to achieve this consistent, optimal flow rate with different feed types, for example the Small feed hole is designed for thinner feeds such as breast milk or water, Medium is designed for milk or formula and Large for thicker feeds. By offering a choice of different feed holes we can ensure that our bottles deliver the same, optimal, breastfeeding like flow rate even when you feed your child different consistencies of food.

Can I purchase NUK bottles with teats that have different sized feed holes?

All NUK First Choice+ Bottles are supplied with a size 1 medium feed hole teat as standard but we also offer replacement teats with small, medium or large feed holes. We recommend the small feed hole for younger babies and thin liquids such as breast milk or water, the medium feed hole for milk or formula and the large feed hole for thicker feed consistencies and hungrier babies! However this is purely a recommendation, different babies have different needs, which is why we offer a choice of teats with different sized feed holes, all of which are available to purchase through the NUK on-line shop. Please note that First Choice+ Teats only fit on First Choice+ bottles.

Size 2 teats are suitable for children up to 18 months, what would you recommend for older children?

NUK Learner BottleChildren aged 18 months+ are generally ready to drink by themselves and thus we would recommend a NUK Learner Bottle or the NUK Magic Cup, both are designed to help make the transition from drinking from a bottle to drinking from a cup that bit easier.

Do you sell insulated covers for your bottles?

We don’t currently have an insulated bottle cover in the range but we are constantly looking to extend and improve our range and thus it maybe something that is added to the range in the near future.

I use your Glass Bottles with a latex teat but would like to replace the teat with a spout, is this possible?

Yes, both the NUK Non-Spill Silicone Spout and Free-Flow TPE Spout are compatible with all our First Choice and First Choice+ glass and plastic bottles.

Can I use a NUK First Choice Teat on a NUK Learner Bottle to help make it easier for my child to progress from drinking from a bottle to drinking from a cup?

Yes. All NUK First Choice Bottles and Teats are interchangeable; the teats, spouts, screw rings and handles can be used with any NUK First Choice bottle.

Why is that my NUK Bottles have become discoloured?

It is rare for this to happen but occasionally plastic (PP) bottles can become discoloured with strongly coloured food types such as carrot juice. Also certain baby formulas that contain carotenoids (pro-vitamin A for example) as an ingredient can cause staining. You can’t see the colour when the formula is mixed because the agent is encased within other agents to ensure water solubility however traces of these carotenoids can remain on the bottle after cleaning and with time or due to high temperatures during sterilization or due to contact with certain chemicals the encasement gets lost and the carotenoids cause staining. This isn’t a contaminant or health risk but it does impact the look of the bottle. This doesn’t happen with PA bottles as these are made of a different material. Alternatively we would recommend washing them with the NUK Baby Bottle Cleanser prior to sterilization.

I would like to try a NUK First Choice+ Teat but have a bottle from another brand, will the NUK Teat fit my bottle?

Unfortunately not, NUK First Choice+ teats have been specially developed to ensure that they are the perfect fit for our own First Choice+ bottles and therefore will not fit onto any other brand of baby bottle.

Are NUK Nature Sense Teats compatible with other NUK Bottles?

No. NUK Nature Sense teats can only be used with NUK Nature Sense bottles, they do not fit other types of NUK bottle. The shape of the Nature Sense teat is wider for an even more natural feeding experience.

Can I purchase spare parts for my NUK baby bottles?

No unfortunately we do not sell spare parts for NUK Bottles in the UK.

Can I give my baby a bottle whilst continuing to breastfeed?

Yes, the orthodontic design of the NUK teat ensures that the same lip, jaw and tongue muscles are used when feeding from a NUK bottle as used when breastfeeding. NUK Teats are designed to simulate a mother’s nipple during breastfeeding as closely as possible which makes it easy to switch from breast to bottle feeding and vice versa without any problems, this has been clinically tested*.

*For an optimal combination of breast and bottle feeding. Moral et al. BMC Pediatrics 2010, 10:6. Further information at

How can colic be avoided when bottle feeding?

NUK Anti Colic Air SystemTo prevent colic all NUK Teats feature the Anti-Colic Air System, this compensates for the difference in air pressure in the bottle, helping to prevent the teat from collapsing and reducing the risk of the child swallowing air, otherwise known as colic. With the Anti-Colic Air System, which is essentially a small ‘slit’ located near the base of the teat, the child can continue to drink without swallowing air. The Anti-Colic Air System should always be under the baby’s nose whilst feeding.

My NUK Teat appears to be collapsing when my baby is feeding, why is this?

During the sterilisation, the NUK Anti-Colic Air System vent may become locked which can cause the teat to collapse during feeding. To ensure it is open and works properly, softly squeeze vent as well as drinking hole of the teat (or the slit of the spout) before each use. This will make sure that the air can flow into the bottle, compensates for the air pressure and once again prevents the teat from collapsing and the baby from swallowing air.

What is the difference between the NUK First Choice Bottles and Teats and the new NUK First Choice+ Bottles and Teats?

The new NUK First Choice+ Teat is an improved version of the original NUK First Choice Teat, it features the original NUK orthodontic shaped teat with a new special, super soft zone which adapts perfectly to baby's palate and is especially well accepted by breastfed babies. The improved NUK Anti-Colic Air System which even further reduces the harmful swallowing of air, commonly thought to be the cause of colic, and which also helps prevent the teat from collapsing. NUK First Choice+ Teats are clinically tested* for switching between breast and bottle feeding without any problem. As well as featuring the new and improved First Choice+ Teat, the new First Choice+ Bottles feature a beautiful new, gender neutral “fireworks” design and still come with a sealing disc to prevent the bottle from leaking whilst being transported.
*Clinically tested: For an optimal combination of breast and bottle feeding. Moral et al. BMC Pediatrics 2010, 10:6.

Do you recommend washing NUK bottles in the dishwasher?

No, most dishwasher detergents are very aggressive and can damage the decoration and material of the bottle which can cause the material to wear prematurely leading to breakage. We recommend washing bottles with the NUK Baby Bottle Cleanser and a little warm water prior to sterilising. NUK’s Baby Bottle Cleanser contains natural ingredients that effectively remove milk protein, pulp and juice residues more effectively than hot soapy water alone.

How should I clean my NUK bottles?

We recommend washing NUK bottles with the NUK Baby Bottle Cleanser and a little warm water. NUK’s Baby Bottle Cleanser contains natural ingredients that effectively remove milk protein, pulp and juice residues more effectively than hot soapy water alone. After washing, the bottle should be sterilised in a product such as the NUK Vario Express Steam Steriliser or the NUK Micro Express Plus Microwave Steam Steriliser.

I recently sterilised a NUK Latex Teat for the first time and the colour has changed slightly, is this normal?

Yes, latex is a natural material which can change colour/appearance slightly after being sterilised, however this in no way negatively affects the performance or function of the teat. A white discolouration is a sign of water absorbance, once dry the teat will return to its original golden yellow colour.

Why do my little one’s silicone teats have a yellow tinge to them?

Silicone is a synthetic material which, when exposed to externalities such as heat and UV rays, may become discoloured. This discoloration may appear as a slight yellowish tinge however rest assured that it will not have a detrimental effect on your little one’s health and will not impact the form or functionality of the teat. As with all teats, regardless as to whether they are silicone or latex we advise to replace once signs of wear, such as bite marks, swelling or stickiness, become apparent or after 1 – 2 months use for hygiene purposes.

Why are there holes in the cap of my NUK baby bottle?

The holes are in fact air vents, all NUK First Choice bottles have this feature which ensures that in the event of a child placing the cap over their mouth and nose at the same time, they are still able to breath.

Why is there a small cross cut on the side of my NUK Teat?

This is the NUK Anti-Colic Air System which is found on all NUK Teats. The NUK Anti-Colic Air System is a small cross shaped valve which allows air to flow into the bottle through a vent, stopping baby swallowing air and helping to prevent colic. Occasionally on latex teats the slits on the cross shaped valve can stick together, this is because it is a natural material. If this happens the valve can be easily opened simply by using your finger and thumb to gently prise it open.

What is the correct orientation of a NUK Teat?

The flat part of the NUK Teat should sit on the bottom of your child’s mouth; the Anti-Colic Air System valve should face upwards and sit directly under your child’s nose.

Where on the NUK Teat packaging should I look for an indication of the feed hole size?

Sometimes customers look at the large M in the top right hand corner and think that this indicates Medium feed hole whereas in fact this indicates the age range of the product e.g. 0-6 Months. If you look at the front of the packaging on the right hand side it should say the word Small, Medium or Large vertically depending on the teat you have chosen.

Is it safe to use a glass bottle to feed my baby?

Yes, glass bottles are very hygienic and are perfectly safe to feed your baby with as long as they are handled and used correctly. The key benefits of glass over plastic are a higher level of hygiene and durability. Glass bottles are more hygienic than plastic because plastic bottles are more prone to scratches inside the bottle, caused by brushes etc and these scratches can present an ideal ground for residues and germs. It becomes visible when you put carrot juice into a bottle that has been used for a longer period or when the plastic becomes less shiny. Glass bottles are also less likely to loose their shape after significant use.

It is really important that you NEVER leave your child alone with a glass bottle. Glass bottles are not suitable for children that are self feeding or for those who like to hold the bottle themselves, primarily from a safety perspective but also due to the weight of the bottle. You must never use metal spoons to stir a glass bottle as this can cause hairline cracks which can result in a fracture when hot feed is poured in. Also never use force to seal or unseal the bottle and replace it if there is even the slightest sign of damage. You should treat glass bottles in the same delicate way that you treat any other item made of glass in the house in order to prolong it’s usable life.

Do NUK Glass bottles contain lead?

No, there is no lead in NUK Glass Bottles.

Can NUK First Choice Baby Bottles be frozen?

Yes, all NUK First Choice & First Choice+ PP (plastic) Baby Bottles can be frozen, which means you can use them to safely store breast milk in the freezer. However it is recommended that frozen breast milk is used within 6 months of freezing.

When I compare the fl oz scale/liquid contents of a NUK Bottle vs. a bottle from another bottle brand the measurement is slightly different, why is that?

All NUK Bottles feature a measurement scale which is calculated in US fl oz, this is because in 1973 the UK committed to use the global metrical system instead of their own imperial fl oz scale. However the switchover period has been extended and thus there will be brands still using the old imperial measurement scale hence a slight difference. As an example 8 UK fl oz are approximately 7.6 US fl oz.

Why doesn’t the new NUK Nature Sense Bottle feature a sealing disc?

When you place the cap on the new NUK Nature Sense Bottle it automatically seals the feed holes meaning you can mix formula without any spills, this also means for your convenience there is no need for a separate sealing disc.


Is it possible to express breast milk directly into one of your bottles and then freeze them?

Yes you can either express by hand or with a manual or electric breast pump such as the NUK Jolie or First Choice + directly into a NUK Bottle or the breast milk container that is supplied with both our breast pumps. All our plastic bottles and breast milk containers come with a sealing disk and screw ring which makes then leak proof and suitable for freezing. Please note our glass bottles are not suitable for freezing.

I am struggling to get the NUK Nipple Shields to attach to my breast, what am I doing wrong?

Before placing the nipple shield on the breast, the inside of the wings should be moistened with water or breast milk for better adhesion. Pull the wings slightly outwards and place the nipple shield over the nipple with the NUK logo facing downwards. Please note the nipple shield should be held in place during breastfeeding, with your fingers supporting the underneath of your breast and your thumb positioned immediately above the nipple.

Why can’t I successfully express breast milk even though my breast pump is working properly?

The key to successful expressing is triggering the let down reflex. Without a milk ejection most of the milk will remain in the breast. The let down reflex is released by the hormone oxcytocin, which is mainly responsible for milk flow during breastfeeding or milk expression. Psychological and physical factors have a strong influence on the let down reflex. It may be triggered by breastfeeding as well as by other stimuli such as a picture of your baby, a cry of another baby, touch or even thinking about your baby. On the other hand, negative emotions like frustration, anger, stress and some medications may delay or block milk release. As expressing milk with a breast pump is different from breastfeeding you may need to relax and practice milk expression.

I’m struggling to get enough suction out of my NUK Breast Pump, what am I doing wrong?

There are a number of factors which could be affecting the suction of your pump. Firstly the basics: check to make sure that if you’re using it in battery mode the batteries are correctly fitted and have sufficient life in them. If you’re using it in mains mode then make sure the plug and mains adapter are correctly inserted. Try adjusting the suction strength controller by moving it in the “+” direction to achieve optimum suction strength. If you’re still having problems then check to make sure that the lip valve is correctly positioned, if it is damaged then use the replacement lip valve supplied, also check that the silicone cushion is correctly fitted, it should be flush with the breast shield, and the connection ring has been tightened. When you use it always make sure you hold it upright; if you’re using it at an angle it will switch off automatically. Also make sure the breast milk container isn’t full, if it is then replace with a new container and finally ensure that the breast shield is completely flush with your breast.

I am looking at purchasing a NUK electric breast pump and was wondering if the Luna is suitable for larger breasts (42J)?

Yes it is, however for larger breasts we would suggest using either the NUK Jolie Manual Breast Pump or the NUK Luna Electric Breast Pump without the silicone cushion. It is important to point out that for successful expressing it is the size of the nipple that is more important than the size of the breast and so as long as the nipple is correctly positioned within the breast shield funnel with enough room around it for milk to flow unhindered then expressing should not be an issue.


Why does the NUK Soother have a different shape to other soothers?

The special, award winning shape of all NUK soothers is designed based on Mother Nature’s perfect model; a mother’s nipple during breastfeeding. To help with the birthing process, all babies are born with under-developed jaws; the mouth, tongue and jaw muscles are then developed by the natural sucking action used in breastfeeding, which makes the baby ‘work’ for their feed. By developing these muscles correctly, there will be sufficient space for correct development of the teeth. It is this natural sucking action that NUK Soothers mimic. All babies are born with a natural instinct to suck, so much so that some even suck their fingers or thumbs in the womb. NUK soothers are designed specifically to satisfy the natural needs of babies and ensure the correct healthy oral development of their teeth and jaws.

How do I know if a soother is orthodontic?

The shape of the soother will tell you whether it is orthodontic or not. On a NUK Orthodontic Soother, the baglet (the piece the baby sucks) features an arched top which follows the contours of the palate, it also feature a flat, almost concave underside which leaves enough space for the tongue to move freely, allowing the NUK Soother to adapt perfectly to baby’s mouth. The orthodontic NUK Shape is very different to the more traditional round or “cherry top” shape.

NUK Soothers promote the healthy development of the teeth and jaw and are approved by the Oral Health Foundation.

Which type of soother is better – latex or silicone?

NUK offers both silicone and latex soothers; silicone soothers are made from a synthetic material and tend to be more durable than latex, they are less affected by temperature or exposure to sunlight. Latex teats are made from a natural material which can age more quickly; exposure to direct sunlight for example will cause a latex soother to age and thus they should be stored carefully.

NUK Latex SoothersLatex however is popular with many parents because it is softer and more flexible which can make it easier for some babies to adapt to. Latex is also more bite-resistant and the natural ageing can be seen as a good indicator for when the teat needs to be replaced.

NUK Silicone SoothersThe choice of silicone or latex is a personal choice but there is a NUK Soother to cater for both needs. For hygiene reasons, all soothers regardless of whether they are silicone or latex should be replaced after 1-2 months.

From what age can I give my baby a soother?

From birth. Babies have a natural urge to suck and thus a soother can be a good solution to enable them to do this between feeds.

When should my child stop using a soother?

When your child should stop using a soother is entirely down to your personal preference. NUK offers soothers in a choice of sizes; Size 1 for 0-6 months and Size 2 for 6-18 months. Generally speaking though when a child passes 18 months it is time to slowly move away from soothers. Your child may have become emotionally attached to the soother so it is best to say goodbye to the soother in stages, use your imagination to make the transition as easy as possible!

I am concerned that my baby could swallow the soother, could this happen?

Due to their special design, all NUK Soothers cannot be swallowed by a child. In those rare cases where a child does manage to put the whole soother into their mouth, DO NOT PANIC, simply remove the soother from the child’s mouth as gently as possible. As an extra safety precaution all NUK Soothers feature 2 x aspiration holes in the soother plate to ensure sufficient breathing in the rare event that the child does manage to put the whole soother in their mouth.

I am interested in purchasing one of your latex soothers but I am concerned that it may contain nitrosamines, please can you confirm that this isn’t the case?

Nitrosamines are chemical compounds that are used in the manufacture of some latex products but we can confirm that all NUK Latex Soothers are manufactured in our own factory in Germany in a strictly controlled process using chemicals which cannot form carcinogenic nitrosamines. Regular testing is undertaken to ensure that all our products comply with all the applicable regulations related to nitrosamines and to nitrosatable compounds. This ensures that there is no risk to human health.

Can you sterilize your soothers in the supplied storage box?

Unfortunately not, the storage box is designed only for hygienically storing the soother when not in use; it is not intended as a means of sterilizing the soother.

How can I clean the storage box that came with the soothers?

The soother box can be cleaned hygienically in the microwave oven within 4 minutes. following these instructions: First, fill each side of the box with 20ml water and put in the pacifier. Close the box and heat on 700-1000W for 4 minutes. The steam in this process prepares the pacifier hygienically. Leave the microwave closed for another 5 minutes. Empty out any water remaining. Leave soothers to dry in the open box. To make the instructions more visible, there is a small instruction on the package. The whole and detailed description can be found in the inlay sheet.

Can I sterilise the NUK Soother Pod in a Microwave Steriliser?

No we do not recommend sterilising it in either a Microwave or Electric Steam Steriliser as this can cause material damage. To clean it we recommend using hot soapy water or the NUK Baby Bottle Cleanser, alternatively you can clean it in a dishwasher.

What is the difference between hygienic treatment and sterilisation?

Hygienic treatment implicits the sufficient reduction of germs, so that after the hygienic treatment there is normally no risk of infection (that means that most of the parts of the product will be germ-free). Sterilisation means the total elimination of all germs on an object. A complete sterilisation is very difficult to achieve under normal conditions. Whereas hygienic treatment is possible to realize at home.
Info: The NUK Steam Steriliser reduces germs more efficiently, because the pacifier is exposed to steam for a longer time (about 10 minutes).

Do you do size 3 soothers?

We no longer offer NUK Soothers in size 3 (18-36 months) here in the UK. Most dental health and childcare experts recommend that you wean your child off a soother from around 18 months and thus there is limited demand for soothers for older babies.

When and in what situation is it beneficial to use a soother?

Babies naturally want to suck, which is fine during breastfeeding but they also want to suck in-between feeds and when they are tired, bored or want to be comforted. Evidence shows that sucking a thumb can have a negative impact on the teeth and bone structure. Using a soother is a safer way to satisfy your child’s need to suck.

What should I be aware of when cleaning a soother?

Before using a soother for the first time, wash it thoroughly using the NUK Baby Bottle Cleanser and then boil it for approximately 5 minutes. Press out any remaining fluid from the baglet (the bit that the baby sucks) or simply leave it to dry; the NUK Multi Dry Rack is a handy and hygienic solution for drying soothers, bottles and accessories. Do not clean soothers in a dishwasher as this may cause material damage and also never lick the soother clean as caries bacteria can be passed onto the child in this way.

There is water in my NUK Soother after boiling it, what should I do?

The NUK Air SystemAll NUK Soothers feature the NUK Air System which is a valve which allows air to escape through the baglet vent, thus allowing it to stay soft and keep its shape, thereby helping to prevent jaw malformation. Due to the valve opening, water can sometimes enter the baglet when the soother is boiled, if this should happen let the soother cool down and then simply press out the remaining water using your finger and thumb.

My NUK Soother is very flat after boiling, what should I do?

This can occasionally happen if a vacuum builds up inside the soother. To rectify this pull sharply on the baglet (the piece the baby sucks), don’t worry the soother is durable enough to withstand the pressure! This action will release the vacuum and the soother will regain its normal shape once again.

When should soothers be replaced?

For hygiene reasons we recommend that all soothers are replaced after 1-2 months of use. Soothers should be replaced immediately if they show any signs of wear and it is recommended that soothers are replaced if your child contracts a cold or throat infection in order to avoid repeat contamination.

Cleaning & Sterilising

I am thinking of purchasing a steriliser from another brand but I like NUK Bottles, will NUK Bottles fit into a competitor’s steriliser?

If you’re using our 150ml bottles then it is likely that they will fit however our 300ml bottles are taller than some of our competitors bottles which may be an issue. To be absolutely sure we recommend using either the NUK Steam or NUK Microwave Steriliser to sterilise all NUK Bottles, alternatively you could simply boil them as a means of sterilisation.

Please can you clarify whether latex teats can be sterilised in an electric steriliser?

NUK Latex Teats can be sterilised using steam or cold water sterilisation, they can also be sterilised in a NUK Steam or Microwave Steriliser however we do not recommend sterilising in a dishwasher as this can cause material damage. The NUK Baby Bottle Cleanser is recommended for cleaning teats prior to sterilisation as it removes dried on milk protein, pulp and juice residues more effectively than hot, soapy water alone. Please note we cannot advise on the sterilising methods for other brands latex teats.

Do the large NUK Bottles fit into the NUK Vario express Steam Steriliser?

Yes all size variants of NUK Bottles will fit into the Vario Express; it will hold up to 6 x NUK First Choice+ (Wide Neck) bottles. The NUK Microwave Steriliser will hold up to 4 bottles.

How long will bottles stay sterile for after sterilisation?

We can only provide advice based on our Vario Express Steam Steriliser & the Micro Express Steam Steriliser. For the Vario Express, it is 24 hours and for the Micro Express it is 1 hour. This is only if the items are kept inside the sealed steriliser, as soon as they are removed they are no longer sterile.

After I have sterilised my baby’s bottles and teats, how should I dry them?

We would suggest using the NUK Multi Dry Rack; this is a more hygienic way of drying baby accessories than using a cloth.

Do I need to clean the Vario express Steam Steriliser every time after sterilising?

Regular cleaning will help prevent a build-up of limescale residue which will help keep the steriliser in the best possible condition. The build-up of lime scale can occur from first use of the NUK Vario express Steam Steriliser. Therefore, it is very important to descale the evaporator tray of the steam steriliser as often as possible to prevent a large build up. To remove limescale we recommend pure white vinegar or an equal parts mixture of white vinegar and boiling water, leaving it for up to 30 minutes. If there is already a large deposit of lime scale on the evaporator tray that is difficult to remove then an all purpose de-scaler can be used. For further information about care and maintenance of this product please consult the Vario Express instruction booklet.

Can NUK products be sterilized in a UV Sterilizer?

No we do not recommend using the UV Sterilization method to sterilise any of our products primarily because this method applies visible light which produces spots of shade which may not be effectively sterilised. Also UV sterilisation is not currently included within the EN testing criteria. For these reasons we do not recommend UV sterilisation for our products and would instead recommend using steam, cold water sterilisation or a NUK Steam or Microwave Steriliser. We do not recommend dishwasher sterilisation as this can cause material damage.

Why has the bottle cleanser liquid changed colour?

Slight discolouration of the bottle cleanser is natural and does not affect its quality.

Is the NUK Hygienic Cleanser Spray antibacterial?

No it is not antibacterial but it does offer gentle yet extremely effective cleaning that is free of many of the harsh chemicals that parents have concerns about when it comes to cleaning the baby household. The NUK Hygienic Cleanser Spray offers mild but effective cleaning without any risk to baby. It is dermatologically tested, free of alcohol, solvents, preserving agents and allergenic fragrances and is suitable for a variety of applications including cleaning toys, textiles, high chairs, potties, floors and changing mats.

Learner Bottles & Cups

Is it possible to purchase replacement spouts for the NUK Learner Bottle in latex material?

Unfortunately we don’t offer replacement spouts in latex, we do however offer replacement spouts in two variants: The silicone non-spill spout is softer, more flexible which helps the transition from a teat to the cup without any mess. The free-flow TPE is harder and more durable and is better suited for older babies who may be more liable to bite the spout.

Please can you tell me if the spouts on your learner bottles can be sterilised?

Yes both the Silicone and TPE spouts for our Learner Bottles can be sterilised using steam or cold water sterilisation, they can also be sterilised in a NUK Steam or Microwave Steriliser however we do not recommend sterilising in a dishwasher as this can cause material damage. The NUK Baby Bottle Cleanser is recommended for cleaning spouts prior to sterilisation as it removes dried on milk protein, pulp and juice residues more effectively than hot, soapy water alone.

My 6 month old loves the NUK Learner Bottle but has a thirst greater than the 150ml capacity can cater for, do you offer an equivalent bottle with a larger capacity?

The NUK learner Bottle is only available in 150ml size but as with all the First Choice products it is interchangeable and so you can easily take the handles and spout from your existing 150ml Learner Bottle and add them to an existing 300ml NUK Bottle and then you’ll still have the benefit of a Learner Bottle but with a larger capacity.

Do you supply replacement spouts for the Winnie the Pooh Active Cup?

Yes the NUK Non-Spill Silicone Spout is a like for like replacement for the spout that is supplied with the Active Cup and can be purchased from the NUK on-line shop.


Is there a problem with my NUK 2-in-1 Thermometer, it won’t record a temperature above 35°C which seems too low?

A “normal” body temperature is between 36.5°C and 37.0°C but there are a couple of factors that could be impacting the accuracy of the temperature reading that you are receiving from your NUK 2-in-1 Thermometer. If you hold the Thermometer for too long in your hands prior to taking the temperature reading, it will warm up which can result in it reading a temperature that is too low. We suggest trying to take the temperature reading again but this time ensure that the Thermometer is at room temperature only prior to use; do not hold it for too long in your hands prior to taking the reading. Also it is worth noting that the temperature of a healthy person can differ by 0.2°C to 1.0°C between the temple and the ear and thus for your reassurance it is worth taking a temperature reading from both. For measuring the temperature in the ear, please gently pull back the ear to lessen the bend of the ear canal (see section 2.3.1 of the Instruction Manual).

Care and maintenance of the NUK 2-in-1 Thermometer is also really important to ensure that it continues to deliver an accurate temperature reading. The probe head is the most sensitive part and particular care should be taken during cleaning. After every measurement, use a cotton bud dipped in a solution of approx. 70% alcohol (Ethanol) to clean both the probe head and the sensor lens. Make sure the tip of the device is pointing downwards to ensure that no cleaning fluid enters the housing. The NUK 2-in-1 Thermometer should never be submerged in water or any other liquid and should not be exposed to direct moisture. If the device is not being used for an extended period of time, we recommend switching it off via the OFF mode (see section 2.3.3 of the Instruction Manual). The device should be stored in a cool, dry place out of direct sunlight and should only be operated in accordance with the conditions specified in the Instruction Manual.


Do any of your latex teats or soothers contain MBT?

2-mercaptobenzothiazole or MBT as it is more commonly known is a potentially dangerous chemical that can be used in rubber manufacturing. All NUK Latex products including teats and soothers have been tested in a laboratory to ensure that they are 100% free of MBT.

Do any of your products contain phthalates or any PVC?

No, NUK products do not contain any of the above materials.

What is Bisphenol A?

Bisphenol A (BPA) is a chemical used to manufacture numerous plastic household items. In recent years, public debate about a possible risk to health from BPA in baby bottles led to uncertainty and concern amongst parents. In response to this the European Commission took a precautionary consumer protection measure and effective from June 1st, 2011, the sale of baby bottles containing BPA was prohibited in all countries within the European Union. All NUK products are BPA free.

Do any NUK products contain BPA?

BPA Free LogoUnderstanding the concern that parents had around BPA in baby products, NUK switched the production of all NUK baby bottles to BPA-free materials before the European Commission’s ban. We can guarantee that we make absolutely no use of materials containing BPA in the manufacture of any of our products.

I have purchased a NUK product from outside of the UK and wish to return the item, am I able to return it to NUK UK?

Unfortunately the NUK range varies from country to country and thus we are only able to manage enquiries related to NUK products that have been purchased in the UK and are part of the UK range. If you live outside of the UK please visit to find a local team who will be happy to help you.

I am looking to purchase some spare parts for a NUK product, do you carry a range of spares?

We do not carry any spares for NUK products, if the product is faulty we will of course offer a replacement or refund but unfortunately we are unable to supply spare parts.

Are you able to ship NUK products outside of the UK?

Unfortunately not, NUK UK only supplies products to customers in the UK (excluding Ireland). However we’re proud to say that NUK products are available all over the world! If you live outside of the UK please visit to find a local team who will be happy to help you.

What is the purpose of the plastic disc that came with the NUK Bottle that I recently purchased?

NUK Sealing DiscThis is a sealing disc which sits over the neck of the bottle and prevents milk or feed leaking into the teat. It is particularly useful for preventing spillages whilst you are out and about. The disc also helps when it comes to mixing formula. The disc should be fitted with the NUK logo facing down. The disc should be removed before feeding. 

Do you offer any introductory discounts for new customers?

Yes, as a friendly welcome to NUK we offer all new customers 25% off their first purchase, simply create a customer account and enter “FAQ25” as a voucher code at the checkout to receive your discount. This offer is restricted to one redemption per email address.

How long will it take for my order to arrive?

We aim to deliver products as soon as possible but we cannot give an exact delivery date. All items are posted by Royal Mail (unless a specific delivery option is chosen) and should normally arrive within 3-5 working days. Orders are dispatched Monday to Friday only. Please note the NUK shop does not operate on weekends and bank holidays, therefore dispatches will take place on the next available working day.

Do you offer a price match and why are the prices on different to those on other retailer sites/stores?

The prices on our website are the recommended retail prices for our products. These prices are communicated with our stockists but we cannot set the specific price at which they must sell our products as this is prohibited. Prices are set by the retailer selling the product.

Although we do not offer a price match on our website we do have a stockists page that will provide you with links to our key retailers, enabling you to compare prices. However, please make sure you check our online shop as you will see that we frequently run many different types of promotions such as free postage, discounts, 3 for 2 offers and many more.

What is BPS and do any NUK products contain this substance?

BPS stands for is Bisphenol-S, which is a chemical compound that is often used in plastics. Some manufacturers use it as alternative to BPA but at NUK we’re pleased to say that all our products are 100% BPA and BPS free.

I have noticed some brown residue on the silver plate of my NUK Vario Express Steam Steriliser, is this normal?

When using a steam steriliser, it is essential that you read the instruction manual prior to your first use. In order to avoid issues with the steriliser please ensure that you clean and descale the product after each use. This will reduce the potential of residue building up and will help to keep the steriliser in the best possible condition.

Does the NUK Nasal Decongester have a lifespan?

No there is no specified replacement date for this item. However to ensure that it stays in perfect condition we recommend that it is dried thoroughly after use to ensure that no humidity remains within the item. The NUK Multi Dry Rack is a hygienic way of cleaning baby accessories such as this. For hygiene purposes we also recommend that the Nasal Decongester is sterilised regularly in boiling water (5 minutes are sufficient).

Are NUK bottles, caps and discs recyclable?

Yes, all NUK bottles, caps and discs are made from pp and feature the mobius loop, which indicate that they can be recycled at a local recycling centre.

Where can I recycle my NUK electrical product?

MAPA Spontex UK Limited, the sole distributor of the NUK brand in the UK, is fulfilling their distributor obligations as a member of the WEEE Distributor Take Back Scheme. For more information about where you can recycle your NUK electrical product(s) in your local area please visit

Please can you confirm that the sterilisation process you use on your products is safe?

Yes, we are happy to confirm that it is safe and no baby product from NUK is ever sterilized by using toxic gases (incl. ethylene oxide or any other carcinogenic gases), we have never used such substances or processes on any of our products.

Why isn’t the voucher code I’m entering at the checkout working?

In most cases, in order to be able to redeem a voucher on the NUK website you will need to have a customer account. If you haven’t already set one up it is very easy. Simply click Create Account, which is located at the top of the homepage, and then enter your details, once complete you can then login with your email address and chosen password and enter the discount code at the checkout. If you already have an account set up then all you have to do is login. For all voucher codes there will be conditions and thus it is advisable to read the small print as it will inform you about any conditions that apply to that specific voucher code. Thank you.

I’ve got another question…what should I do?

NHS ChoicesIf you have any further questions regarding NUK products, then please visit our Contact us page for information on how to get in touch with the NUK team. Remember, we're here to help! If your question is related directly to breast or bottle feeding however, then please visit the NHS Choices website for up to date information and professional advice.