Skip to product information
1 of 1

  • Images are for illustration purposes only

Milton Sterilising Fluid-500ml

Milton Sterilising Fluid-500ml

  • 1. Ozempic®️-equivalent therapy now available for weight management
  • 2. Average weight loss of 17%, with 1 in 3 patients achieving over 20%
  • 3. May help reduce osteoarthritis-related pain
  • 4. Wegovy®️ is not expected to impact the effectiveness of oral contraceptives
  • 5. Supports cardiovascular risk reduction
  • 6. Over 22 million patients treated with semaglutide-based therapies since 2018

  • ✔️ Kills 99.9% of bacteria, viruses, and fungi on contact
  • ✔️ Safe for sterilising baby bottles, teats, and dummies
  • ✔️ No rinsing required after correct-dilution immersion
  • ✔️ Cold-water formula — no heat or electricity needed
  • ✔️ Keeps items sterile for up to 24 hours per solution

Price Checker

Regular price £3.69
Sale price £3.69
Sale Sold out
  • Lowest price guarantee
  • Includes FREE private prescription
View full details

 

What Is Milton Sterilising Fluid and How Does It Keep Babies Safe?

 

When you have a newborn, keeping feeding equipment clean is one of those things you simply cannot cut corners on. Babies' immune systems are still developing, which means bacteria and viruses that an adult might shrug off can cause real harm to an infant. Milton sterilising fluid has been trusted by parents and healthcare professionals in the UK for decades precisely because it offers a reliable, no-heat method of killing harmful microorganisms on feeding bottles, teats, dummies, and other baby equipment. You can find it alongside other essentials in our baby and toddler range at Cured Pharmacy.

This 500ml bottle is a practical size — enough to prepare multiple sterilising baths before you need to restock. At just £3.69, it represents genuinely good value for a product that plays such an important role in infant hygiene.

 

How Does Milton Sterilising Fluid Work to Kill Germs?

 

The active ingredient is sodium hypochlorite (2% w/v), combined with sodium chloride. When diluted in water, sodium hypochlorite releases hypochlorous acid — a compound that penetrates and disrupts the cell membranes of bacteria, viruses, and fungi, rendering them inactive. The mechanism is well established in infection control science.

  • Sodium hypochlorite releases hypochlorous acid on contact with water
  • Hypochlorous acid oxidises and destroys microbial cell walls
  • Bacteria, viruses, and fungi are killed within the 15-minute immersion period
  • The diluted solution leaves no harmful residue at the recommended concentration

Crucially, this process happens in cold water — no boiling, no steam, no electricity required. That makes it particularly useful when you are travelling or simply do not have access to a steam steriliser.

 

Who Should Use Milton Sterilising Fluid?

 

This product is designed primarily for parents and carers of infants, but its uses extend further than the nursery. Anyone who needs to sterilise equipment without heat will find it useful. It is especially relevant if you are:

  • Sterilising baby bottles, teats, breast pump parts, and dummies
  • Travelling abroad where steam sterilisers are impractical
  • Sterilising food preparation surfaces or utensils in a home setting
  • Looking for a cold-water sterilisation method recommended by health visitors

The NHS advises that all feeding equipment should be sterilised until your baby is at least 12 months old. Milton sterilising fluid is one of the methods the NHS recognises as effective for this purpose.

 

How Does Milton Sterilising Fluid Compare to Other Sterilisation Methods?

 

Feature Milton Sterilising Fluid Electric Steam Steriliser
Heat required? No — cold water only Yes — electricity needed
Suitable for travel? Yes Limited
Sterilisation time 15 minutes 8–12 minutes
Cost Low (£3.69 per 500ml) Higher upfront cost

 

How Should You Store Milton Sterilising Fluid?

 

Store the bottle below 25°C, away from direct sunlight, and always in its original container with the cap tightly closed. Sodium hypochlorite can degrade when exposed to heat or light, which would reduce its effectiveness. Once diluted in a sterilising tank, the solution remains active for up to 24 hours — after which you should discard it and prepare a fresh batch.

If you are looking for other hygiene and health essentials, our first aid collection includes a range of products to help you keep your household safe. Keep Milton sterilising fluid out of reach of children at all times, and never store the diluted solution in an unlabelled container.

This product is a medicine. Speak to your doctor or pharmacist before using if you have an underlying medical condition or are taking other medicines.

Milton Sterilising Fluid 500ml specifications
Treatment category Sterilisation / Infant hygiene
Mechanism of action Sodium hypochlorite releases hypochlorous acid, destroying microbial cell membranes
Effective against Bacteria, viruses, fungi
Suitable for Baby bottles, teats, dummies, breast pump parts, food preparation surfaces
Active ingredient Sodium hypochlorite 2% w/v, Sodium chloride
Pack size 500ml
UK classification General Sale List (GSL)
Preparation Liquid solution
Route of administration Topical / immersion sterilisation (not for internal use)

Specifications of Milton Sterilising Fluid 500ml

 

What Is Milton Sterilising Fluid and What Is It Used For?

 

Milton Sterilising Fluid 500ml is a sodium hypochlorite-based sterilising solution used to disinfect baby feeding equipment and other household items by cold-water immersion. It is not a medicine taken internally — it is applied externally to objects to eliminate harmful microorganisms before they come into contact with your baby. The NHS recommends sterilising all feeding equipment until your baby is at least 12 months old, and cold-water sterilisation using a hypochlorite solution is one of the accepted methods for doing so.

Beyond baby care, it can also be used to sterilise food preparation surfaces, cutting boards, and utensils in the home, making it a versatile hygiene product for the whole household.

 

What Do You Need to Know Before Using Milton Sterilising Fluid?

 

Before using this product, read the following warnings carefully:

  • Do not swallow the solution — it is not intended for internal use
  • Do not use undiluted on skin or mucous membranes
  • Avoid contact with eyes; if splashed, rinse immediately with plenty of water
  • Do not mix with other cleaning products, particularly those containing ammonia or acids — this can release toxic chlorine gas
  • Not suitable for use on metal items, as sodium hypochlorite can cause corrosion
  • Keep out of reach and sight of children at all times
  • Do not use if you are sensitive or allergic to sodium hypochlorite or any other ingredient

Known interactions and incompatibilities:

  • Incompatible with acidic cleaning agents (e.g. vinegar, limescale removers) — mixing produces chlorine gas
  • Incompatible with ammonia-based products
  • May bleach or discolour coloured plastics and fabrics on prolonged contact

 

How Should You Use Milton Sterilising Fluid?

 

Always wash all items thoroughly with hot soapy water and rinse well before sterilising. Then follow these steps:

  1. Fill a clean sterilising container with 5 litres of cold tap water
  2. Add one 30ml capful (one cap = 30ml) of Milton Sterilising Fluid
  3. Stir gently to mix the solution evenly
  4. Submerge all items fully, ensuring there are no trapped air bubbles
  5. Keep items submerged for a minimum of 15 minutes
  6. Remove items and use directly — no rinsing is required at the correct dilution
  7. Discard the solution after 24 hours and prepare a fresh batch
Indication Dilution Immersion Time Rinse Required?
Baby feeding equipment 30ml per 5 litres Minimum 15 minutes No
Food preparation surfaces 30ml per 5 litres Minimum 15 minutes Optional
Dummies and teethers 30ml per 5 litres Minimum 15 minutes No

If you are travelling and need compact hygiene solutions, you might also find our travel health collection useful for keeping your family protected on the go.

 

What Are the Possible Side Effects of Milton Sterilising Fluid?

 

When used as directed at the correct dilution, Milton Sterilising Fluid is considered safe. However, misuse or accidental exposure can cause the following effects:

Common side effects (from direct skin or eye contact):

  • Skin irritation or redness if undiluted fluid contacts skin
  • Eye irritation or watering if splashed into eyes
  • Mild bleaching of fabrics or surfaces on prolonged contact

Less common or serious effects (from accidental ingestion or inhalation):

  • Nausea, vomiting, or stomach pain if swallowed — seek urgent medical attention
  • Respiratory irritation if used in a poorly ventilated space
  • Severe eye injury if large volumes splash into eyes without prompt rinsing

If swallowed, do not induce vomiting. Contact NHS 111 or go to your nearest A&E immediately. Take the product packaging with you so medical staff can identify the ingredients quickly.

 

How Should You Store Milton Sterilising Fluid?

 

  • Store below 25°C in a cool, dry place away from direct sunlight
  • Keep in the original container with the cap tightly closed
  • Do not transfer to unlabelled or food containers
  • Keep out of reach and sight of children
  • Discard diluted solution after 24 hours
  • Check the expiry date on the bottle before use — do not use after the stated date

For other products that support your baby's health and wellbeing, explore our full baby and toddler range at Cured Pharmacy.

Written and reviewed by our qualified team

Your safety and success are our highest priorities. Our medical team rigorously evaluates every product and piece of advice we provide, ensuring you receive only the most effective, science-backed solutions available.

Frequently Asked Questions

Where can I buy Milton Sterilising Fluid 500ml online in the UK?

You can buy Milton Sterilising Fluid 500ml directly from Cured Pharmacy online for just £3.69, with fast UK delivery. It is a General Sale List product, so no prescription is needed. Browse our full baby and toddler range for more infant hygiene essentials.

How does Milton Sterilising Fluid work in practice?

Milton Sterilising Fluid contains sodium hypochlorite, which releases hypochlorous acid when diluted in water. This acid penetrates and destroys the cell membranes of bacteria, viruses, and fungi, killing them during the 15-minute immersion period. It is a well-established cold-water sterilisation method recognised by the NHS.

How do I use Milton Sterilising Fluid step by step?

First, wash all items thoroughly with hot soapy water and rinse well. Then add one 30ml capful to 5 litres of cold water, submerge items fully for at least 15 minutes, and remove them ready to use — no rinsing needed. Discard the solution after 24 hours and make a fresh batch.

Do I need to rinse baby bottles after sterilising with Milton?

No — when Milton Sterilising Fluid is used at the correct dilution (30ml per 5 litres), rinsing is not required. The residual solution at that concentration is safe for babies. Rinsing with non-sterile water could actually reintroduce bacteria.

Is Milton Sterilising Fluid safe for newborns?

Yes, when diluted correctly, Milton Sterilising Fluid is safe for sterilising equipment used by newborns, including bottles, teats, and dummies. The NHS recommends sterilising all feeding equipment until your baby is at least 12 months old. Always follow the dilution instructions precisely.

What is the correct dilution for Milton Sterilising Fluid?

The correct dilution is one 30ml capful of Milton Sterilising Fluid added to 5 litres of cold water. Do not use a stronger concentration than recommended, as this is unnecessary and may cause irritation. Always measure carefully using the cap provided.

How long can items stay in Milton Sterilising Fluid?

Items can remain submerged in the Milton solution for up to 24 hours and will stay sterile throughout that period. After 24 hours, the solution loses its effectiveness and must be discarded. Prepare a fresh solution daily for best results.

What are the side effects of Milton Sterilising Fluid?

Direct skin contact with undiluted fluid may cause redness or irritation, and splashing into eyes can cause discomfort. If either occurs, rinse the affected area thoroughly with clean water for several minutes. If swallowed, contact NHS 111 or go to A&E immediately — do not induce vomiting.

Can I use Milton Sterilising Fluid on metal items?

It is not recommended to use Milton Sterilising Fluid on metal items, as sodium hypochlorite can cause corrosion and discolouration over time. Stick to plastic feeding equipment, silicone teats, and glass bottles. For metal items, consider alternative sterilisation methods such as boiling.

Who is eligible to use Milton Sterilising Fluid?

Milton Sterilising Fluid is suitable for anyone who needs to sterilise baby feeding equipment, food preparation surfaces, or household items using a cold-water method. It is particularly useful for parents of infants under 12 months, carers, and those travelling without access to steam sterilisers. No prescription is required.

What happens if I accidentally swallow Milton Sterilising Fluid?

If Milton Sterilising Fluid is swallowed, do not induce vomiting. Contact NHS 111 immediately or go to your nearest A&E, taking the product packaging with you. Even small amounts of undiluted sodium hypochlorite solution can cause irritation to the mouth, throat, and stomach.

What are alternatives to Milton Sterilising Fluid for baby equipment?

Alternatives include electric steam sterilisers, microwave sterilising bags, and UV sterilisers. Boiling in water for at least 10 minutes is also an NHS-recognised method. Milton Sterilising Fluid is often preferred for travel or when electricity is unavailable, as it only requires cold water. You can explore more hygiene options in our first aid collection.

Can Milton Sterilising Fluid be mixed with other cleaning products?

No — never mix Milton Sterilising Fluid with other cleaning products, especially those containing acids (such as vinegar or limescale removers) or ammonia. Mixing sodium hypochlorite with acids releases toxic chlorine gas, which is dangerous to inhale. Always use it on its own, diluted only in water.

How long should I continue sterilising my baby's feeding equipment?

The NHS recommends sterilising all feeding equipment until your baby is at least 12 months old. After this age, a baby's immune system is more developed and better able to handle everyday bacteria. However, if your child is unwell or immunocompromised, speak to your GP or health visitor for personalised advice.

Is there any research supporting the use of sodium hypochlorite for sterilisation?

Yes — sodium hypochlorite has been used in infection control for over a century and is well supported by clinical and microbiological evidence. It is included in NHS and Public Health England guidance on disinfection and sterilisation. Its effectiveness against a broad spectrum of pathogens, including bacteria, viruses, and fungi, is well established in published literature.

How Should You Use Milton Sterilising Fluid?

Before sterilising anything, always wash the items thoroughly in hot soapy water and rinse them well under running water. This removes milk residue and debris that could reduce the effectiveness of the sterilising solution. Then follow these steps carefully:

What Is the Correct Dose of Milton Sterilising Fluid?

The dilution ratio is the same regardless of what you are sterilising — one 30ml capful per 5 litres of cold water. Do not use a stronger concentration than recommended, as this is unnecessary and may cause irritation to skin or surfaces. Always use the cap provided to measure accurately.

When Is the Best Time to Use Milton Sterilising Fluid?

Many parents find it easiest to prepare a fresh sterilising solution at the start of each day, so that clean equipment is always ready when needed. Items can remain in the solution for up to 24 hours, meaning you can sterilise a full batch of bottles overnight and have them ready for morning feeds. If you need an item urgently, the minimum immersion time of 15 minutes is all that is required before use.

How Long Can You Use Milton Sterilising Fluid For?

The NHS recommends continuing to sterilise all feeding equipment until your baby is at least 12 months old. After this point, a baby's immune system is sufficiently developed to cope with everyday bacteria. However, if your child has a health condition that affects their immunity, speak to your GP or health visitor before stopping sterilisation. The 500ml bottle, used at the recommended dilution, provides approximately 16 full sterilising baths of 5 litres each.

Do not exceed the recommended dose. If in doubt, speak to your pharmacist.

Customer Reviews

Be the first to write a review
0%
(0)
0%
(0)
0%
(0)
0%
(0)
0%
(0)

What Are the Most Common Side Effects of Milton Sterilising Fluid?

When used correctly at the recommended dilution, Milton Sterilising Fluid is well tolerated and does not typically cause side effects during normal use. However, accidental direct contact with the undiluted fluid or misuse can lead to localised reactions.

  • Skin redness or irritation if undiluted fluid contacts the skin
  • Mild stinging or watering of the eyes if splashed
  • Bleaching or discolouration of fabrics or coloured plastics on prolonged contact

What Are the Less Common Side Effects of Milton Sterilising Fluid?

Less common effects are generally associated with accidental ingestion or use in poorly ventilated areas. These are uncommon when the product is used as directed.

  • Nausea or stomach discomfort if small amounts are accidentally ingested
  • Throat irritation if vapours are inhaled in a confined, unventilated space
  • Persistent skin dryness with repeated, prolonged skin contact

What Are the Serious Side Effects of Milton Sterilising Fluid?

Serious effects are rare but can occur if the product is swallowed in significant quantities or if it comes into prolonged contact with the eyes without rinsing. If you or someone else swallows Milton Sterilising Fluid, do not induce vomiting. Contact NHS 111 immediately or go to your nearest A&E, taking the product packaging with you so medical staff can identify the active ingredients. Severe eye exposure without prompt rinsing may cause more significant irritation and should be assessed by a healthcare professional.

  • Vomiting, abdominal pain, or mouth burns if swallowed undiluted
  • Significant eye injury if large volumes splash into eyes without immediate rinsing
  • Respiratory distress if mixed with acidic products, releasing chlorine gas

What Should You Do If You Experience Side Effects?

For skin contact, rinse the affected area with plenty of clean water for at least 10 minutes. For eye contact, irrigate immediately with clean running water for at least 15 minutes and seek medical advice if irritation persists. If swallowed, call NHS 111 or attend A&E — do not try to make the person vomit. Always use the product in a well-ventilated area to minimise inhalation of any vapour.

Can Milton Sterilising Fluid Interact With Other Products?

Milton Sterilising Fluid should never be mixed with other cleaning agents. Combining sodium hypochlorite with acidic products such as vinegar, limescale removers, or toilet cleaners releases toxic chlorine gas, which is harmful to the respiratory system. Similarly, mixing with ammonia-based products produces chloramine vapours. Always use Milton Sterilising Fluid on its own, diluted only in cold water, and store it separately from other household chemicals.

If you are concerned about any side effects, contact your pharmacist or GP immediately.

Patient Information Leaflet

Important - Before taking any medication, it is always important to read the Patient Information Leaflet (PIL)

Written and reviewed by our qualified team

GPhC Number: 2233073
Tarun Kumar

Reviewed by:

Tarun Kumar

Superintendent/ Clinical Lead

📖 Find out more about our team of medical content authors and how we ensure the accuracy of our content with our content guidelines.

Content last updated: 31 Mar 2025

We’re a safe and
regulated UK service

Registered Pharmacy Badge

Lowest Price Guarantee

We're convinced you won't find your treatment cheaper, but if you do we'll refund the difference.

Find out more

100% discreet packaging

We're convinced you won't find your treatment cheaper, but if you do we'll refund the difference.

Find out more

Agent

Need help?
Talk to our friendly experts now

How our service works

Service Setup

Service setup

Discreet Packaging

Discreet packaging

Express Delivery

Express delivery