Lidocaine for Mouth and Throat

What is lidocaine for mouth and throat?

Lidocaine is a local anaesthetic used to relieve pain in the mouth and throat by temporarily numbing the area. It works by blocking nerve signals, making it especially useful for short-term symptom relief. Known by brand names like Bonjela, Anbesol, Iglu, Calgel, and Covonia, they're available to puy in shops and pharmacies. It is available in multiple forms, including gels, sprays, lozenges, and mouthwashes[1]. 

You can also find advice here on lidocaine skin cream and lidocaine for piles and itchy bottom.  

What is lidocaine used for?

Lidocaine helps relieve discomfort from a range of mouth and throat conditions. These include[1]:

• Mouth ulcers 

• Sore throats 

• Teething pain (in babies) 

• Dental pain or procedures 

• Oral mucositis due to cancer treatment 

How does lidocaine work?

Lidocaine works by blocking sodium channels in nerve endings. This prevents the nerves from sending pain signals to the brain, resulting in temporary numbness in the treated area[1]. 

Who can take lidocaine?

Most people from teething children to adults can use lidocaine, but there are some restrictions. Speak to a doctor first if[1]: 

• You are elderly or acutely ill 

• You have heart rhythm problems, liver or kidney disease, or epilepsy 

• You have porphyria 

• You are allergic to lidocaine 

• You are pregnant or breastfeeding (only use under medical advice) 

Some lidocaine treatments are suitable for children and babies. Teething treatments are for babies from the age of 5 or 6 months, depending on the brand. Lidocaine treatments can look very similar so make sure you check the packaging first, and ensure that any medicine containing choline salicylate is not given to a child under 16. It’s linked to a rare condition called Reye’s syndrome, which can be fatal[1]. 

Please tell your doctor or pharmacist about any conditions you may have or medication you take before you start treatment, and always follow the instructions in the Patient Information Leaflet[2].

What is the typical dosage of lidocaine?

The dosage varies depending on the formulation[1]: 

• Gel, ointment, or liquid: use a small amount as needed, but wait 3 hours before using again 

• Spray: check instructions for how much to use 

• Lozenges: 6 to 10 lozenges a day 

Always follow the product instructions or advice from your healthcare provider. 

How do you take lidocaine?

To use lidocaine safely and effectively[1]: 

• Ointment, gel, or liquid for mouth ulcers or dentures: put a small amount on your fingertip or a cotton bud, and wipe it across the surface of the ulcer or sore part of your gums 

• Teething: put a small amount on your clean fingertip or a cotton bud, dab it onto the sore parts of their mouth, being careful not to put it too far back in their mouth 

• Spray for sore throats: aim the spray on the sore areas of your throat and spray the recommended number of squirts 

Take care if drinking or eating hot food and drink after application.

Can you stop taking lidocaine?

Yes, lidocaine is used for short-term relief. Once your symptoms improve, you can stop using it. If your symptoms persist, speak to your doctor or pharmacist[1]. 

What do you do if you take too much lidocaine?

Accidental overuse or swallowing large amounts can lead to serious side effects. These may include[1]: 

• Dizziness 

• Difficulty breathing 

• Seizures 

• Slow heartbeat 

Seek urgent medical attention if this happens. 

What do you do if you forget to take lidocaine?

Lidocaine is used as needed. If you forget to use it, apply or rinse when needed. Do not double the dose[1]. 

How do I store lidocaine?

Store lidocaine products properly to preserve their effectiveness[1]:

• Below 25°C 

• Away from direct sunlight 

• Out of reach of children 

• Do not use past the expiry date 

• Return any unused or expired products to your local pharmacy 

What medicines can’t you take with lidocaine?

Lidocaine may interact with some medications, but usually only at higher doses, which is unlikely with use for the mouth and throat[1].  

Always inform your doctor or pharmacist about all medications and supplements you take before you start a new medicine, and follow the instructions in the Patient Information Leaflet[2]. 

What are the side effects of lidocaine?

Most people experience very few side effects when using lidocaine as directed. You should contact your GP if you experience any unusual symptoms. In rare cases, the medicine may cause a serious allergic reaction (anaphylaxis). You should call 999 or visit A&E immediately if you believe this is happening[1]. 

Symptoms of anaphylaxis include[1]:  

• Difficulty breathing  

• Tightness in throat and chest  

• Swelling of the tongue or throat  

• Feeling faint or dizzy  

• Blue/grey skin or lips  

• Loss of consciousness 

If you experience any side effects, including those not listed, you are encouraged to report them via the Yellow Card Scheme or contact your doctor, pharmacist, or nurse. This information is intended as a summary for general awareness and does not replace professional medical advice. 

The information provided in the side effects section is not a comprehensive list of all possible side effects associated with this medication. For a complete list of side effects, please refer to the Patient Information Leaflet (PIL) provided with your medication or consult your healthcare professional[2].

Frequently asked questions about lidocaine

Can I swallow lidocaine mouthwash? 
No, it should be spat out after rinsing[1]. 

Is lidocaine safe for children? 
Yes, depending on the preparation. It is important to speak to your doctor or pharmacist, and to read the product literature to make sure it is appropriate for your child[1]. 

Can I use it during pregnancy or breastfeeding? 
Only if advised by your doctor[1]. 

How quickly does lidocaine work? 
Usually within minutes of application[1]. 

Can I eat or drink after using lidocaine? 
Wait until the numbness wears off to avoid biting or choking and take care with hot foods and drinks[1]. 

Can I use lidocaine with painkillers? 
Usually yes – but confirm with your doctor or pharmacist[1]. 

Does it cure ulcers or just relieve pain? 
It relieves pain but does not treat the underlying cause[1]. 

Can I use it for a sore throat from a cold? 
Yes, it can help ease the pain[1].

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