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CB12 Whitening Peppermint Mouthwash - 250ml

CB12 Whitening Peppermint Mouthwash - 250ml

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  • ✔️ Neutralises bad breath at source for up to 12 hours
  • ✔️ Targets volatile sulphur compounds other mouthwashes miss
  • ✔️ Gently whitens teeth with regular daily use
  • ✔️ Alcohol-free formula suitable for sensitive mouths
  • ✔️ Contains fluoride to help protect tooth enamel daily

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What Is CB12 Whitening Mouthwash and How Does It Help?

 

Bad breath — clinically known as halitosis — affects a significant proportion of adults at some point in their lives. It can knock your confidence, affect relationships, and sometimes signal an underlying oral health issue. The CB12 whitening mouthwash is designed to tackle this directly, combining breath-neutralising technology with a gentle whitening action in a single daily rinse. At just £4.29 for 250ml, it offers an accessible way to support your everyday oral health routine.

CB12 is a Swedish-developed oral rinse that has been used across Europe for a number of years. Unlike many standard mouthwashes that simply mask odour with flavouring, CB12 works at a molecular level to neutralise the compounds responsible for bad breath. The peppermint variant leaves a clean, fresh taste without being overpowering.

 

How Does CB12 Whitening Mouthwash Work?

 

The science behind CB12 centres on volatile sulphur compounds (VSCs). These are the gases — primarily hydrogen sulphide and methyl mercaptan — produced by bacteria breaking down proteins in the mouth. They are the main culprits behind persistent bad breath. CB12 targets these compounds directly rather than covering them up.

  • Zinc acetate binds to and deactivates VSCs, preventing them from being released as odour.
  • Chlorhexidine diacetate reduces the bacterial load in the mouth, limiting further VSC production.
  • Sodium fluoride helps strengthen tooth enamel and supports cavity prevention.
  • The whitening agents gently lift surface stains over time with regular use.
  • The peppermint flavour provides an immediate freshness sensation alongside the active ingredients.

Together, these ingredients are formulated to provide up to 12 hours of breath protection from a single morning rinse. That is a meaningful difference compared to standard alcohol-based mouthwashes, which typically offer only short-term masking.

 

Who Should Use CB12 Whitening Mouthwash?

 

CB12 is suitable for most adults who want to manage bad breath and maintain a brighter smile as part of their daily oral hygiene routine. It is particularly useful if you find that brushing and flossing alone are not enough to keep breath fresh throughout the day.

  • Adults and young people aged 12 and over
  • People who experience persistent or recurring bad breath (halitosis)
  • Those looking for a daily mouthwash that also offers gentle whitening
  • Anyone wanting to reduce surface staining from coffee, tea, or food

It is not suitable for children under 12. If you have a known allergy to chlorhexidine or any of the listed ingredients, do not use this product. People with dry mouth conditions or those undergoing dental treatment should speak to their dentist or pharmacist first.

 

How Does CB12 Whitening Mouthwash Compare to Other Mouthwashes?

 

Feature CB12 Whitening Mouthwash Standard Fluoride Mouthwash
Targets VSCs (bad breath cause) Yes — zinc acetate + chlorhexidine No — masks odour only
Whitening action Yes — gentle surface stain removal Not typically
Fluoride for enamel Yes — sodium fluoride included Yes — in most brands
Duration of freshness Up to 12 hours 1–3 hours typically

 

Is CB12 Whitening Mouthwash Suitable for Daily Use?

 

Yes, CB12 whitening mouthwash is intended for once-daily use as part of your regular oral hygiene routine. It is best used in the morning after brushing. Because it contains chlorhexidine, you should wait at least 30 minutes after brushing with fluoride toothpaste before rinsing — this prevents the two ingredients from interacting and reducing each other's effectiveness. If you are also browsing our range of dental products, you will find complementary items to build a complete daily routine.

Store the bottle below 25°C, away from direct sunlight, and keep it out of reach of children. Do not use beyond the printed expiry date.

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.

CB12 Whitening Peppermint Mouthwash 250ml specifications
Treatment category Oral hygiene / Halitosis management
Mechanism of action Neutralises volatile sulphur compounds; reduces oral bacteria; gentle enamel whitening
Effective for Bad breath (halitosis), surface tooth staining
Suitable for Adults and children aged 12 and over
Active ingredients Zinc acetate, Chlorhexidine diacetate, Sodium fluoride
Pack size 250ml
UK classification General Sale / OTC
Preparation Oral rinse solution
Route of administration Oral (rinse and spit)

Specifications of CB12 Whitening Peppermint Mouthwash 250ml

 

What Is CB12 Whitening Peppermint Mouthwash and What Is It Used For?

 

CB12 Whitening Peppermint Mouthwash is an over-the-counter oral rinse used to prevent and manage bad breath (halitosis) and to gently whiten teeth with regular use. Halitosis is a common condition — the NHS notes that most people will experience bad breath at some point, and it is most often caused by bacteria in the mouth breaking down food particles and producing sulphur-containing gases. CB12 addresses this at source rather than simply masking the smell.

The 250ml bottle provides approximately 25 daily uses at the recommended 10ml dose. It is alcohol-free, which makes it a more comfortable option for people who find alcohol-based rinses drying or irritating. The peppermint flavour provides a pleasant freshness that complements the active ingredients.

 

What Do You Need to Know Before Using CB12 Whitening Mouthwash?

 

Before using this product, read the following carefully. If you are unsure whether CB12 is right for you, speak to your pharmacist.

Do not use CB12 if you:

  • Are allergic to chlorhexidine, zinc acetate, sodium fluoride, or any other listed ingredient
  • Are under 12 years of age
  • Have open sores or ulcers in the mouth that have not been assessed by a dentist or GP

Take care and speak to a pharmacist or dentist if you:

  • Are pregnant or breastfeeding — the NHS advises seeking professional guidance before using any oral medicine during pregnancy
  • Have a known dry mouth condition (xerostomia)
  • Are currently undergoing dental treatment or using other medicated mouth rinses
  • Have a history of mouth or throat conditions

Drug and product interactions:

  • Do not use immediately after brushing with fluoride toothpaste — wait at least 30 minutes, as toothpaste surfactants can reduce chlorhexidine's effectiveness
  • Avoid using alongside other chlorhexidine-containing products at the same time
  • No significant systemic drug interactions are known at OTC use levels

 

How Should You Use CB12 Whitening Mouthwash?

 

Using CB12 correctly is straightforward, but the timing matters. Follow these steps each morning for the best results.

  1. Brush your teeth as normal and wait at least 30 minutes before using CB12.
  2. Measure exactly 10ml using the measuring cap provided.
  3. Take the mouthwash into your mouth and rinse thoroughly for 30–60 seconds, making sure it reaches all areas including the back of the tongue.
  4. Spit out completely. Do not swallow.
  5. Do not rinse your mouth with water afterwards — this will reduce the effectiveness of the active ingredients.
  6. Avoid eating or drinking for at least 30 minutes after use if possible.
Indication Age Group Dose Frequency
Bad breath prevention / whitening Adults and children 12+ 10ml Once daily (morning)
Not applicable Under 12 years Not recommended

 

What Are the Possible Side Effects of CB12 Whitening Mouthwash?

 

Like all products containing active ingredients, CB12 can cause side effects in some people, though not everyone will experience them. The NHS advises that if you notice any unexpected or persistent symptoms after starting a new oral health product, you should speak to your pharmacist or dentist.

Common side effects:

  • Temporary brown or yellow staining of teeth or tongue — this is reversible with professional cleaning
  • Altered or reduced taste sensation, particularly in the first few days of use
  • Mild tingling or sensation in the mouth

Less common side effects:

  • Mouth irritation or soreness
  • Dry mouth sensation
  • Swollen or tender gum tissue in rare cases

Serious allergic reactions to chlorhexidine are rare but have been reported. If you experience swelling of the face, lips, or throat, difficulty breathing, or a skin rash after use, stop immediately and seek urgent medical attention. You can find further guidance on managing oral and general health concerns through our ear, nose and throat range if related symptoms arise.

 

How Should You Store CB12 Whitening Mouthwash?

 

Correct storage helps maintain the product's effectiveness and safety throughout its shelf life.

  • Store below 25°C in a cool, dry place
  • Keep away from direct sunlight and heat sources
  • Keep the cap tightly closed when not in use
  • Keep out of the reach and sight of children
  • Do not use after the expiry date printed on the bottle
  • Do not freeze
  • If you are unsure about disposal, ask your pharmacist — do not pour down the drain or dispose of in household waste

If you are building a broader daily health routine, you may also want to explore our vitamins and supplements range to support overall wellbeing alongside your oral care.

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 CB12 Whitening Mouthwash online in the UK?

You can buy CB12 Whitening Peppermint Mouthwash 250ml directly from Cured Pharmacy, a UK GPhC-registered online pharmacy. It is available without a prescription and can be ordered for home delivery. Browse our full oral health range for complementary products.

How does CB12 whitening mouthwash work in the mouth?

CB12 works by neutralising volatile sulphur compounds (VSCs) — the gases produced by oral bacteria that cause bad breath. Zinc acetate binds to these molecules and deactivates them, while chlorhexidine diacetate reduces the bacteria producing them in the first place. Sodium fluoride also helps protect tooth enamel during daily use.

How do I use CB12 mouthwash correctly step by step?

Measure 10ml using the cap, swirl it around your mouth for 30–60 seconds, then spit out — do not swallow. Wait at least 30 minutes after brushing your teeth before using CB12, and do not rinse with water afterwards. Use once daily, ideally in the morning.

What is the correct dose of CB12 mouthwash for adults?

The recommended dose for adults and young people aged 12 and over is 10ml once daily. The measuring cap on the bottle makes it easy to get the right amount each time. Do not use more than the recommended dose or increase frequency without dental advice.

When is the best time to use CB12 mouthwash?

Morning use is recommended, as this gives you the maximum benefit of up to 12 hours of breath freshness throughout the day. Use it after brushing but wait at least 30 minutes to avoid any interaction between the toothpaste surfactants and chlorhexidine. Consistency is key — daily use gives the best long-term results.

What are the side effects of CB12 whitening mouthwash?

The most commonly reported side effects include temporary tooth or tongue discolouration, altered taste, and mild mouth tingling. These are generally reversible and tend to settle with continued use or on stopping. If you experience swelling, difficulty breathing, or a rash, stop use immediately and seek medical attention.

How do I manage tooth staining caused by CB12 mouthwash?

Temporary brown staining associated with chlorhexidine-containing rinses can be removed by a dental hygienist during a routine scale and polish. To minimise staining, avoid tea, coffee, and red wine immediately after use. If staining is a concern, speak to your dentist about whether CB12 remains the right choice for you.

Is CB12 mouthwash suitable for children?

CB12 Whitening Mouthwash is not recommended for children under 12 years of age. For children aged 12 and over, the same adult dose of 10ml once daily applies, but parental supervision is advised. For younger children's oral care needs, speak to your dentist or visit our baby and toddler section for age-appropriate products.

Can I use CB12 mouthwash if I am pregnant or breastfeeding?

If you are pregnant or breastfeeding, you should speak to your pharmacist, midwife, or GP before using CB12 mouthwash. While the product is used topically and systemic absorption is minimal, professional guidance is always recommended during pregnancy. The NHS advises maintaining good oral hygiene throughout pregnancy, as hormonal changes can increase the risk of gum problems.

How long does CB12 mouthwash keep breath fresh?

CB12 is formulated to neutralise bad breath for up to 12 hours following a single morning use. This is significantly longer than most standard mouthwashes, which typically provide only short-term masking. Individual results may vary depending on diet, hydration, and oral health status.

Who is eligible to use CB12 whitening mouthwash?

CB12 is suitable for adults and young people aged 12 and over who want to manage bad breath and gently whiten their teeth. It is not suitable for those with a known allergy to chlorhexidine or any other listed ingredient. People with ongoing dental conditions or those taking other oral medicines should check with their dentist or pharmacist first.

What happens if I accidentally swallow CB12 mouthwash?

CB12 is not intended to be swallowed. If a small amount is accidentally ingested by an adult, it is unlikely to cause serious harm, but you should drink water and monitor for any symptoms. If a child swallows any amount, or if an adult swallows a large quantity, contact NHS 111 or your nearest A&E immediately.

What are the alternatives to CB12 whitening mouthwash?

Alternatives include standard fluoride mouthwashes, chlorhexidine rinses such as Corsodyl, and whitening rinses from brands like Colgate or Listerine. However, most alternatives do not specifically target volatile sulphur compounds in the way CB12 does. Your dentist or pharmacist can help you choose the most appropriate product for your needs.

How long can you use CB12 mouthwash for?

CB12 can be used as part of a long-term daily oral hygiene routine. There is no standard maximum duration for use, but if you notice persistent side effects such as significant staining or taste changes, speak to your dentist. Regular dental check-ups are recommended alongside any daily oral care product.

What does the latest research say about CB12 mouthwash?

Published clinical studies support the use of zinc and chlorhexidine combinations for reducing volatile sulphur compounds and managing halitosis. Research has consistently shown that zinc-based oral rinses are more effective at long-term breath control than flavour-masking products alone. CB12's formulation is based on this evidence base, and it has been available in European markets for a number of years with a well-established safety profile.

How Should You Use CB12 Whitening Peppermint Mouthwash?

Using CB12 correctly makes a real difference to how well it works. The key is timing — you need to wait at least 30 minutes after brushing your teeth before rinsing with CB12, as toothpaste surfactants can interfere with chlorhexidine's effectiveness. Do not rinse with water after use, and avoid eating or drinking for at least 30 minutes if possible.

Follow these steps each morning for consistent results:

What Is the Correct Dose of CB12 Whitening Peppermint Mouthwash?

The dose is the same for all eligible users aged 12 and over. The measuring cap makes it straightforward to get the right amount every time. Never use more than the recommended dose — using extra will not improve results and may increase the risk of side effects such as staining.

When Is the Best Time to Use CB12 Whitening Peppermint Mouthwash?

Morning use is ideal. Using CB12 in the morning — after brushing and waiting the recommended 30 minutes — means you benefit from up to 12 hours of breath freshness throughout the day. This timing also means the active ingredients are working during the period when you are most likely to be in social or professional situations.

If you prefer to use it at a different time of day, that is fine, but try to keep to the same time each day to build a consistent habit. Avoid using it last thing at night immediately after brushing, as the timing gap requirement may be difficult to manage before sleep.

How Long Can You Use CB12 Whitening Peppermint Mouthwash For?

CB12 is suitable for ongoing daily use as part of a long-term oral hygiene routine. There is no set maximum duration, and many people use it continuously as their regular mouthwash. However, if you notice persistent side effects — particularly significant tooth staining or prolonged taste changes — speak to your dentist, who may recommend a short break or an alternative product.

Regular dental check-ups every six to twelve months are recommended alongside any daily oral care routine, as advised by the NHS. Your dentist can also professionally remove any chlorhexidine-related staining during a routine clean.

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

What Are the Most Common Side Effects of CB12 Whitening Mouthwash?

Most people use CB12 without experiencing any significant problems. However, because it contains chlorhexidine diacetate, some users do notice certain effects, particularly in the first few weeks of use. These are generally mild and reversible.

  • Temporary brown or yellow staining of teeth, tongue, or dental restorations
  • Altered or reduced taste sensation — food and drink may taste different temporarily
  • Mild tingling or warming sensation in the mouth during or after rinsing
  • Slight dryness of the mouth or lips

Tooth staining is the most frequently reported effect associated with chlorhexidine-containing rinses. It is cosmetic rather than harmful and can be removed by a dental hygienist during a routine appointment.

What Are the Less Common Side Effects of CB12 Whitening Mouthwash?

Less commonly, some users may experience more noticeable oral symptoms. These are not dangerous in most cases, but they are worth monitoring. If any of the following persist or worsen, stop using the product and speak to your pharmacist or dentist.

  • Mouth soreness or irritation of the gum tissue
  • Swollen or tender gums
  • Increased sensitivity of the mouth lining
  • Prolonged or significant changes in taste that do not resolve

What Are the Serious Side Effects of CB12 Whitening Mouthwash?

Serious reactions to CB12 are rare, but chlorhexidine has been associated with allergic reactions in a small number of people. The MHRA has issued guidance noting that chlorhexidine hypersensitivity, while uncommon, can range from mild skin reactions to severe anaphylaxis in rare cases.

Stop using CB12 immediately and seek urgent medical attention if you experience any of the following:

  • Swelling of the face, lips, tongue, or throat
  • Difficulty breathing or swallowing
  • Skin rash, hives, or itching
  • Dizziness, rapid heartbeat, or feeling faint

What Should You Do If You Experience Side Effects of CB12 Mouthwash?

For mild side effects such as staining or taste changes, you may wish to continue use and monitor whether symptoms improve over time. Reducing the frequency of tea, coffee, and red wine consumption can help minimise staining. For persistent or bothersome effects, speak to your pharmacist — they can advise whether to continue, reduce use, or switch to an alternative product.

If you experience a serious allergic reaction, call 999 or go to your nearest A&E immediately. Do not drive yourself. Always mention to healthcare professionals that you have been using a chlorhexidine-containing product.

Can CB12 Whitening Mouthwash Interact With Other Medicines?

CB12 is used topically in the mouth and is not swallowed, so significant systemic drug interactions are not expected at normal OTC use. However, there is a well-documented interaction between chlorhexidine and the anionic surfactants found in most fluoride toothpastes — these can reduce chlorhexidine's antibacterial effectiveness if used too close together. Always wait at least 30 minutes after brushing before using CB12. If you are using any other medicated mouth rinses or gels prescribed by your dentist, check with them before adding CB12 to your routine.

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

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