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Strepsils Extra Triple Action Blackcurrant Lozenges

Strepsils Extra Triple Action Blackcurrant Lozenges

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  • ✔️ Combines dual antiseptics with lidocaine for triple-action throat relief
  • ✔️ Lidocaine numbs sore throat pain quickly as lozenge dissolves
  • ✔️ Kills bacteria in the mouth and throat with two antiseptic agents
  • ✔️ Suitable for adults and young people aged 12 and over
  • ✔️ Blackcurrant flavour lozenge — no water needed, dissolves in mouth

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What Are Strepsils Extra Blackcurrant Lozenges?

 

A sore throat can stop you in your tracks — whether it's the scratchy discomfort of a cold or the sharper pain that makes swallowing feel like a chore. Strepsils Extra blackcurrant lozenges are an over-the-counter medicine designed to tackle that discomfort from two angles at once: fighting the bacteria that may be contributing to your symptoms while simultaneously numbing the pain. Each lozenge contains a dual antiseptic combination alongside lidocaine hydrochloride, a well-established local anaesthetic. If you're looking for broader throat and cold support, you'll find a range of related products in our cold and flu collection.

Sore throats are one of the most common reasons people visit a pharmacist in the UK. The NHS notes that most sore throats are caused by viral infections and resolve on their own within a week, but symptomatic relief can make a real difference to your day-to-day comfort while you recover.

 

How Do Strepsils Extra Triple Action Lozenges Work?

 

The "triple action" in the name refers to three distinct mechanisms working together in each lozenge. Here's how they combine:

  • Amylmetacresol (0.6 mg): An antiseptic agent that disrupts the cell membranes of bacteria present in the mouth and throat, helping to reduce bacterial load.
  • 2,4-Dichlorobenzyl alcohol (1.2 mg): A second antiseptic that works alongside amylmetacresol to broaden the antibacterial effect against common oral pathogens.
  • Lidocaine hydrochloride (10 mg): A local anaesthetic that temporarily blocks nerve signals in the throat lining, reducing the sensation of pain and soreness relatively quickly after the lozenge begins to dissolve.

The lozenge format is deliberate. Allowing it to dissolve slowly in your mouth means the active ingredients are released gradually across the throat mucosa, maximising contact time with the affected tissue. Chewing or swallowing it whole would significantly reduce its effectiveness.

 

Who Should Use Strepsils Extra Triple Action Lozenges?

 

These lozenges are intended for adults and young people aged 12 and over who are experiencing a sore throat with pain. They're particularly useful when standard lozenges haven't provided enough relief, or when the pain is more pronounced — for instance, at the onset of a cold or mild throat infection.

  • Adults aged 18 and over with a painful sore throat
  • Teenagers aged 12–17 (under adult supervision where appropriate)
  • People who prefer a non-tablet, dissolving format for throat relief
  • Those who want both antiseptic and anaesthetic action in a single product

They are not suitable for children under 12, people with a known allergy to lidocaine or other amide-type local anaesthetics, or those with certain rare metabolic conditions. Always read the label before use.

 

How Do Strepsils Extra Lozenges Compare to Standard Strepsils?

 

Feature Strepsils Extra Triple Action Standard Strepsils (Original)
Active ingredients Amylmetacresol, 2,4-dichlorobenzyl alcohol, lidocaine HCl Amylmetacresol, 2,4-dichlorobenzyl alcohol
Pain relief (anaesthetic) Yes — lidocaine 10 mg No local anaesthetic
Antiseptic action Yes (dual antiseptic) Yes (dual antiseptic)
Minimum age 12 years 6 years (some formulations)
Best suited for Moderate to more painful sore throats Mild sore throats and early symptoms

 

How Should You Store Strepsils Extra Lozenges?

 

Store your Strepsils Extra blackcurrant lozenges below 25°C in a dry place, away from direct sunlight and out of reach of children. Do not use them after the expiry date printed on the packaging. If you're managing multiple medicines at home — for example, alongside products from our pain relief range — it's good practice to keep everything clearly labelled and stored separately.

Check the pack for any signs of damage or moisture before use. Lozenges that have melted or stuck together should be discarded.

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.

Strepsils Extra Triple Action Blackcurrant Lozenges specifications
Treatment category Sore throat relief
Mechanism of action Dual antiseptic + local anaesthetic (lidocaine)
Effective for Painful sore throats, throat infections
Suitable for Adults and children aged 12 and over
Active ingredients Amylmetacresol 0.6 mg, 2,4-Dichlorobenzyl alcohol 1.2 mg, Lidocaine hydrochloride 10 mg
Pack sizes 16 lozenges, 24 lozenges
UK classification General Sale List (GSL) / Pharmacy (P) — varies by pack size
Drug class Antiseptic + local anaesthetic combination
Preparation Lozenge
Route of administration Oromucosal (dissolved in the mouth)

Specifications of Strepsils Extra Triple Action Blackcurrant Lozenges

 

What Is Strepsils Extra Triple Action and What Is It Used For?

 

Strepsils Extra Triple Action Blackcurrant Lozenges are an over-the-counter medicine used to relieve the pain and discomfort of sore throats in adults and young people aged 12 and over. Each lozenge combines two antiseptic agents — amylmetacresol and 2,4-dichlorobenzyl alcohol — with lidocaine hydrochloride, a local anaesthetic, to provide both antibacterial action and temporary pain relief. The NHS advises that most sore throats are caused by viral infections and will clear up without antibiotics, but symptomatic treatments like lozenges can help manage discomfort in the meantime.

 

What Do You Need to Know Before Using Strepsils Extra Lozenges?

 

Before using these lozenges, it's important to check whether they are appropriate for you. Do not use them if any of the following apply:

  • You are under 12 years of age
  • You have a known allergy to lidocaine, any other amide-type local anaesthetic, amylmetacresol, 2,4-dichlorobenzyl alcohol, or any other ingredient in the lozenge
  • You have been diagnosed with a rare hereditary condition such as glucose-galactose malabsorption or sucrase-isomaltase insufficiency (the lozenges contain sucrose)

Speak to your pharmacist or GP before using if you are pregnant, breastfeeding, or have any serious underlying health conditions. The following interactions should also be considered:

  • No clinically significant drug interactions have been identified at the recommended OTC doses
  • If you are taking any prescribed medicines, particularly those affecting heart rhythm, check with your pharmacist before use
  • Lidocaine, even at low doses, may theoretically interact with other local anaesthetics if used concurrently — seek advice if relevant

 

How Should You Use Strepsils Extra Triple Action Lozenges?

 

Using these lozenges correctly is straightforward, but the method matters. Follow these steps for best results:

  1. Remove one lozenge from the packaging.
  2. Place it in your mouth and allow it to dissolve slowly — do not chew or swallow it whole.
  3. Let the lozenge move gently around your mouth and throat as it dissolves.
  4. Repeat every 2–3 hours as needed, up to the maximum daily dose.
  5. Do not eat or drink immediately after use to allow the active ingredients to remain in contact with the throat lining.
Indication Age Group Dose Frequency
Sore throat pain relief Adults (18+) 1 lozenge Every 2–3 hours; max 8 in 24 hours
Sore throat pain relief 12–17 years 1 lozenge Every 2–3 hours; max 8 in 24 hours
Not applicable Under 12 years Not suitable Do not use

If you're also managing other symptoms such as nasal congestion or a cough, you may find it helpful to explore our ear, nose and throat range for complementary products.

 

What Are the Possible Side Effects of Strepsils Extra Lozenges?

 

Like all medicines, Strepsils Extra Triple Action lozenges can cause side effects, although not everyone experiences them. Knowing what to look out for helps you use the product safely.

Common side effects:

  • Temporary numbness or tingling in the mouth and throat (due to lidocaine)
  • Mild taste changes

Less common side effects:

  • Mouth irritation or a burning sensation
  • Nausea if the lozenge is swallowed rather than dissolved
  • Hypersensitivity reactions — including skin rash, itching, or swelling of the face, lips, or throat — are rare but serious and require immediate medical attention

If you experience any signs of a severe allergic reaction (anaphylaxis), call 999 immediately. The NHS provides clear guidance on recognising and responding to anaphylaxis.

 

How Should You Store Strepsils Extra Lozenges?

 

  • Store below 25°C in a cool, dry place
  • Keep away from direct sunlight and sources of heat
  • Keep out of the sight and reach of children
  • Do not use after the expiry date printed on the pack
  • Do not store in a bathroom or near a sink — moisture can affect the lozenges

If you're building a home medicine cabinet, it's worth pairing these lozenges with other essentials. Our first aid collection has a range of products to keep you prepared for common ailments throughout the year.

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 Strepsils Extra blackcurrant lozenges online in the UK?

You can buy Strepsils Extra Triple Action Blackcurrant Lozenges directly from Cured Pharmacy for £5.29, with fast UK delivery. They are also available from most high street pharmacies and supermarkets without a prescription. Buying online is a convenient option if you want to avoid a trip out when you're feeling under the weather.

How do Strepsils Extra Triple Action lozenges work in the body?

Each lozenge contains two antiseptics — amylmetacresol and 2,4-dichlorobenzyl alcohol — which work by disrupting bacterial cell membranes in the mouth and throat. Lidocaine hydrochloride, the third active ingredient, temporarily blocks nerve signals in the throat lining to reduce the sensation of pain. Together, these three ingredients address both the cause and the symptoms of a sore throat.

How do I use Strepsils Extra blackcurrant lozenges step by step?

Place one lozenge in your mouth and allow it to dissolve slowly — do not chew or swallow it whole. Repeat every 2–3 hours as needed, and avoid eating or drinking immediately afterwards to allow the active ingredients to work. Never exceed 8 lozenges in any 24-hour period.

What is the maximum number of Strepsils Extra lozenges I can take per day?

The maximum dose is 8 lozenges in any 24-hour period for adults and young people aged 12 and over. Exceeding this dose increases the risk of side effects from the lidocaine content. If you find you need more than the maximum dose to manage your symptoms, speak to your GP.

Are Strepsils Extra Triple Action lozenges suitable for children?

No — these lozenges are not suitable for children under 12 years of age due to the lidocaine content. For younger children with sore throats, the NHS recommends paracetamol or ibuprofen in age-appropriate formulations, and you should always check with a pharmacist before giving any medicine to a child. You can browse child-appropriate products in our baby and toddler collection.

Can I use Strepsils Extra lozenges if I am pregnant or breastfeeding?

You should speak to your doctor or pharmacist before using Strepsils Extra if you are pregnant or breastfeeding. The safety of lidocaine-containing lozenges has not been fully established for use during pregnancy at OTC doses. Your healthcare provider can recommend the safest option for your situation.

What are the side effects of Strepsils Extra blackcurrant lozenges?

The most commonly reported side effect is temporary numbness or tingling in the mouth and throat, which is caused by the lidocaine and is expected. Rare but serious side effects include hypersensitivity reactions such as rash, swelling of the face or throat, or difficulty breathing — if any of these occur, stop use immediately and seek emergency medical help. Mild mouth irritation or nausea can also occur if the lozenge is chewed rather than dissolved.

How long should I use Strepsils Extra lozenges before seeing a doctor?

If your sore throat does not improve within 3 days of using these lozenges, or if your symptoms worsen, you should stop use and consult your GP or pharmacist. The NHS advises seeing a doctor if you have a very high temperature, difficulty swallowing, or a severely swollen throat. These lozenges are intended for short-term symptomatic relief only.

What happens if I accidentally swallow a Strepsils Extra lozenge whole?

Swallowing a lozenge whole rather than dissolving it in your mouth will reduce its effectiveness significantly, as the active ingredients need to make direct contact with the throat lining. It is unlikely to cause serious harm in a single instance, but if you accidentally swallow several lozenges or a child ingests one, contact NHS 111 or your nearest pharmacist for advice. Always keep medicines out of reach of children.

Can I take Strepsils Extra lozenges alongside paracetamol or ibuprofen?

Yes, in general these lozenges can be used alongside paracetamol or ibuprofen for additional pain relief, as there are no known clinically significant interactions at recommended doses. However, you should always check with your pharmacist if you are taking other prescribed medicines. If you need broader pain management support, our pain relief collection has a range of options.

Do Strepsils Extra lozenges contain sugar?

Yes, Strepsils Extra Triple Action Blackcurrant Lozenges contain sucrose, which means they are not suitable for people with rare hereditary conditions such as sucrase-isomaltase insufficiency or glucose-galactose malabsorption. People with diabetes should be aware of the sugar content and factor it into their daily intake. If you have concerns about sugar in medicines, speak to your pharmacist.

What are the alternatives to Strepsils Extra Triple Action lozenges?

Alternatives include standard Strepsils (without lidocaine) for milder sore throats, Difflam spray or lozenges (benzydamine hydrochloride) for anti-inflammatory relief, or simple warm honey and lemon drinks as a home remedy recommended by the NHS. The right choice depends on the severity of your symptoms and any contraindications — your pharmacist can help you decide. You can also explore our full ear, nose and throat range for other options.

How quickly do Strepsils Extra blackcurrant lozenges start to work?

The lidocaine in each lozenge begins to numb the throat relatively quickly as the lozenge dissolves — many people notice some relief within a few minutes of the lozenge starting to dissolve. The antiseptic action works over a slightly longer period as the ingredients make contact with the throat lining. Results vary between individuals depending on the severity of the sore throat.

Are there any long-term risks of using Strepsils Extra lozenges regularly?

These lozenges are intended for short-term use only — typically no more than 3 consecutive days without medical review. Using them long-term without identifying the underlying cause of your sore throat is not recommended, as persistent throat pain can sometimes indicate a condition that needs medical assessment. If you find yourself relying on throat lozenges frequently, it's worth speaking to your GP.

What is the latest guidance on treating sore throats in the UK?

The NHS and NICE both advise that most sore throats are viral and do not require antibiotics, with self-care measures — including lozenges, adequate hydration, and rest — being the first-line approach. Antiseptic and anaesthetic lozenges like Strepsils Extra are recognised as appropriate symptomatic treatments for adults. If symptoms persist beyond a week or are severe, a clinical assessment is recommended to rule out bacterial tonsillitis or other conditions.

How Should You Use Strepsils Extra Triple Action Blackcurrant Lozenges?

Using these lozenges correctly ensures you get the most from each dose. The key is to let the lozenge dissolve slowly in your mouth rather than chewing or swallowing it — this allows the active ingredients to coat the throat lining and work effectively.

What Is the Correct Dose of Strepsils Extra Triple Action Lozenges?

Always follow the dosage instructions on the pack. Do not exceed the stated maximum dose, as the lidocaine content means that taking too many lozenges in a short period could increase the risk of side effects.

When Is the Best Time to Use Strepsils Extra Lozenges?

Use a lozenge whenever your sore throat pain is at its most uncomfortable — many people find this is first thing in the morning, before meals, or in the evening when symptoms tend to feel more pronounced. Spacing doses evenly throughout the day (every 2–3 hours) helps maintain a consistent level of relief rather than waiting until pain becomes severe.

If you wake in the night with throat pain, you may use a lozenge then too, provided you have not already reached the maximum of 8 lozenges in the preceding 24 hours.

How Long Can You Use Strepsils Extra Lozenges For?

These lozenges are intended for short-term use only. If your symptoms have not improved after 3 days of use, or if they worsen at any point, you should stop using the lozenges and seek advice from your GP or pharmacist. Persistent sore throat pain lasting more than a week warrants a clinical assessment to rule out bacterial infection or other underlying causes.

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

How Should You Use Strepsils Extra Triple Action Blackcurrant Lozenges?

Using these lozenges correctly ensures you get the most from each dose. The key is to let the lozenge dissolve slowly in your mouth rather than chewing or swallowing it — this allows the active ingredients to coat the throat lining and work effectively.

What Is the Correct Dose of Strepsils Extra Triple Action Lozenges?

Always follow the dosage instructions on the pack. Do not exceed the stated maximum dose, as the lidocaine content means that taking too many lozenges in a short period could increase the risk of side effects.

When Is the Best Time to Use Strepsils Extra Lozenges?

Use a lozenge whenever your sore throat pain is at its most uncomfortable — many people find this is first thing in the morning, before meals, or in the evening when symptoms tend to feel more pronounced. Spacing doses evenly throughout the day (every 2–3 hours) helps maintain a consistent level of relief rather than waiting until pain becomes severe.

If you wake in the night with throat pain, you may use a lozenge then too, provided you have not already reached the maximum of 8 lozenges in the preceding 24 hours.

How Long Can You Use Strepsils Extra Lozenges For?

These lozenges are intended for short-term use only. If your symptoms have not improved after 3 days of use, or if they worsen at any point, you should stop using the lozenges and seek advice from your GP or pharmacist. Persistent sore throat pain lasting more than a week warrants a clinical assessment to rule out bacterial infection or other underlying causes.

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

What Are the Most Common Side Effects of Strepsils Extra Triple Action Lozenges?

Because these lozenges contain lidocaine — a local anaesthetic — the most frequently reported side effect is a temporary feeling of numbness or tingling in the mouth and throat. This is an expected pharmacological effect of the lidocaine and is not a sign that anything has gone wrong. It typically resolves within a short time after the lozenge has fully dissolved.

  • Temporary mouth or throat numbness
  • Tingling sensation on the tongue or inner cheeks
  • Mild change in taste perception

What Are the Less Common Side Effects of Strepsils Extra Lozenges?

Some people may experience mild irritation in the mouth or throat, particularly if they use the lozenges more frequently than recommended. Nausea can occasionally occur if a lozenge is chewed or swallowed rather than dissolved slowly — this is another reason why the correct method of use matters.

  • Mouth or throat irritation
  • Mild burning sensation in the mouth
  • Nausea (usually if lozenge is not dissolved correctly)
  • Dry mouth

What Are the Serious Side Effects of Strepsils Extra Lozenges?

Serious side effects are rare but can occur. Hypersensitivity reactions — including allergic responses to lidocaine, amylmetacresol, or 2,4-dichlorobenzyl alcohol — have been reported. Signs of a serious allergic reaction include sudden swelling of the face, lips, tongue, or throat, difficulty breathing or swallowing, a widespread skin rash, or a sudden drop in blood pressure causing dizziness or collapse. These symptoms constitute a medical emergency.

If you experience any of these signs, stop using the lozenges immediately and call 999 or go to your nearest A&E department without delay.

What Should You Do If You Experience Side Effects?

For mild side effects such as temporary numbness or tingling, no action is usually needed — these will resolve on their own. If you find the numbness uncomfortable or it persists longer than expected, stop using the lozenges and speak to your pharmacist. You should also report any side effects to the MHRA via the Yellow Card scheme at yellowcard.mhra.gov.uk, which helps monitor the safety of medicines in the UK.

If you are unsure whether a symptom you are experiencing is related to the lozenges, your pharmacist is always a good first point of contact for advice.

Can Strepsils Extra Lozenges Interact With Other Medicines?

At the recommended OTC doses, no clinically significant drug interactions have been identified for Strepsils Extra Triple Action lozenges. However, if you are taking prescribed medicines — particularly those that affect heart rhythm (antiarrhythmics) or other local anaesthetics — it is worth checking with your pharmacist before use, as lidocaine can theoretically interact with these drug classes. Always tell your pharmacist about all medicines you are currently taking, including herbal remedies and supplements.

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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