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Covonia Chesty Cough Sugar Free Syrup - 150ml

Covonia Chesty Cough Sugar Free Syrup - 150ml

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  • ✔️ Loosens and clears stubborn chest mucus effectively
  • ✔️ Sugar free formula suitable for people with diabetes
  • ✔️ Contains traditional herbal expectorants: liquorice and squill
  • ✔️ Relieves chesty, productive coughs in adults and over-12s
  • ✔️ 150ml bottle provides multiple doses per pack

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What Is Covonia Chesty Cough Sugar Free Syrup?

 

A chesty cough can be exhausting. The tightness in your chest, the constant urge to cough, the thick mucus that just won't shift — it disrupts sleep, work, and daily life. Covonia Chesty Cough Sugar Free Syrup is an over-the-counter expectorant designed to help loosen and clear that stubborn mucus from your airways, making each cough more productive and helping you breathe more easily. Available in a 150ml bottle for just £6.95, it's a practical, accessible option for adults and young people aged 12 and over.

Chesty coughs are one of the most common reasons people visit a pharmacist in the UK. They typically follow a cold or upper respiratory tract infection, when excess mucus builds up in the bronchial tubes. If you're also dealing with other cold and flu symptoms alongside your cough, it's worth browsing our cold and flu remedies for a broader range of support.

 

How Does Covonia Chesty Cough Sugar Free Syrup Work?

 

This syrup works as an expectorant — meaning it helps your body clear mucus rather than simply suppressing the cough reflex. The two active herbal ingredients work together to make mucus thinner and easier to expel:

  • Liquorice liquid extract — has a long history of use in respiratory preparations; it is thought to help soothe the airways and support mucus clearance.
  • Squill tincture — a traditional expectorant derived from the squill plant, believed to stimulate the secretory glands of the respiratory tract, thinning mucus so it can be coughed up more easily.

Together, these ingredients encourage a more productive cough. Rather than fighting the cough, the syrup works with your body's natural clearing mechanism to help shift the congestion causing your discomfort.

 

Who Should Use Covonia Chesty Cough Sugar Free Syrup?

 

This syrup is intended for adults and young people aged 12 years and over who are experiencing a chesty, productive cough — typically associated with a cold, mild chest infection, or post-viral mucus build-up. Because it is sugar free, it is particularly well suited to:

  • People with diabetes who need to monitor sugar intake carefully
  • Those following a low-sugar or sugar-reduced diet
  • Individuals who find standard syrups too sweet
  • Anyone aged 12 and over with a chesty, mucus-producing cough

It is not suitable for children under 12 years of age. If you are pregnant, breastfeeding, or taking other medicines, speak to your pharmacist or GP before use.

 

How Does Covonia Sugar Free Compare to Other Chesty Cough Syrups?

 

Feature Covonia Chesty Cough Sugar Free Syrup Standard Covonia Chesty Cough Syrup
Sugar free Yes No
Active ingredients Liquorice extract, Squill tincture Liquorice extract, Squill tincture
Suitable for diabetics More suitable (check with pharmacist) Less suitable
Age suitability 12 years and over 12 years and over

 

Is Covonia Chesty Cough Sugar Free Syrup Suitable for Long-Term Use?

 

This product is intended for short-term use only. You should not use it for more than 5 consecutive days without seeking medical advice. If your cough persists, worsens, or is accompanied by a high fever, breathlessness, or blood in your sputum, stop use and consult a GP promptly — these could be signs of a more serious condition requiring investigation.

Store the syrup below 25°C, away from direct sunlight, and keep it out of reach of children. If you're managing a range of symptoms this winter, our ear, nose and throat remedies collection includes a variety of products to help with related upper respiratory complaints. The chesty cough sugar free syrup format makes it a convenient choice for those who need to avoid added sugars without compromising on efficacy.

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.

Covonia Chesty Cough Sugar Free Syrup 150ml specifications
Treatment category Cough remedies / Expectorants
Mechanism of action Expectorant — loosens and thins bronchial mucus
Effective for Chesty, productive coughs associated with colds and mild respiratory infections
Suitable for Adults and young people aged 12 years and over
Active ingredients Liquorice liquid extract, Squill tincture
Pack size 150ml
UK classification General Sale List (GSL)
Drug class Herbal expectorant
Preparation Oral syrup
Route of administration Oral

Specifications of Covonia Chesty Cough Sugar Free Syrup 150ml

 

What Is Covonia Chesty Cough Sugar Free Syrup and What Is It Used For?

 

Covonia Chesty Cough Sugar Free Syrup is an over-the-counter herbal expectorant used to relieve chesty, productive coughs in adults and young people aged 12 and over. It contains two traditional herbal active ingredients — liquorice liquid extract and squill tincture — which work together to help loosen mucus in the airways, making it easier to cough up and clear. It is formulated without added sugar, making it a more appropriate choice for people who need to manage their sugar intake. The NHS notes that most coughs caused by colds or upper respiratory tract infections will resolve on their own, but OTC remedies can help ease symptoms in the meantime.

 

What Do You Need to Know Before Using Covonia Chesty Cough Sugar Free Syrup?

 

Before taking this syrup, read the following carefully. There are certain situations where this product may not be appropriate for you.

Do not use this product if you:

  • Are under 12 years of age
  • Are allergic to liquorice, squill, or any other ingredient in the formulation
  • Have a persistent or chronic cough (e.g. associated with asthma, chronic bronchitis, or emphysema) without first consulting a GP
  • Have a cough accompanied by excessive mucus production that has not been medically assessed

Speak to your pharmacist or GP before use if you:

  • Are pregnant or breastfeeding
  • Have liver or kidney problems
  • Have high blood pressure — liquorice-containing products may affect blood pressure with prolonged use
  • Are taking prescribed medicines, particularly diuretics, corticosteroids, or antihypertensives
  • Have diabetes — while this product is sugar free, always confirm suitability with your healthcare team

Known drug interactions to be aware of:

  • Liquorice extract may interact with diuretics and increase the risk of low potassium (hypokalaemia)
  • It may also interact with corticosteroids and some antihypertensive medicines
  • No significant interactions have been established at recommended doses for squill tincture, but caution is advised with cardiac glycosides

 

How Should You Use Covonia Chesty Cough Sugar Free Syrup?

 

Always use this medicine exactly as described in the patient information leaflet. Do not exceed the stated dose. If you are unsure, ask your pharmacist for guidance.

  1. Shake the bottle gently before use.
  2. Measure the correct dose using the measuring device provided — do not estimate.
  3. Take the syrup orally, swallowing it directly.
  4. You may take it up to four times daily, spaced evenly throughout the day.
  5. Do not use for more than 5 consecutive days without medical advice.
Age Group Dose Frequency Maximum daily dose
Adults and children aged 12+ 5ml–10ml Up to 4 times daily 40ml
Children under 12 Not suitable — do not use

If you're also looking for support with related symptoms, our pain relief range includes options for sore throats and headaches that can accompany a chesty cough.

 

What Are the Possible Side Effects of Covonia Chesty Cough Sugar Free Syrup?

 

Like all medicines, this product can cause side effects, although not everyone will experience them. Side effects are generally uncommon when the product is used at the recommended dose and for the recommended duration.

Common side effects:

  • Mild nausea
  • Gastrointestinal discomfort or upset stomach

Less common side effects:

  • Allergic reactions such as skin rash or itching — stop use immediately if this occurs
  • With prolonged or excessive use of liquorice-containing products: fluid retention, raised blood pressure, or low potassium levels

If you experience any serious or unexpected side effects, stop taking the product and contact your pharmacist or GP. You can also report suspected side effects to the MHRA via the Yellow Card scheme at yellowcard.mhra.gov.uk.

 

How Should You Store Covonia Chesty Cough Sugar Free Syrup?

 

Correct storage helps maintain the quality and safety of this medicine. Follow these guidelines:

  • Store below 25°C in a cool, dry place
  • Keep away from direct sunlight and heat sources
  • Keep the bottle tightly closed when not in use
  • Keep out of the sight and reach of children
  • Do not use after the expiry date printed on the label
  • Do not dispose of medicines via wastewater or household waste — return unused medicines to your pharmacy

If you're managing multiple health concerns this season, our vitamins and supplements collection includes immune support options that may complement your recovery.

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 Covonia Chesty Cough Sugar Free Syrup online in the UK?

You can order Covonia Chesty Cough Sugar Free Syrup 150ml directly from Cured Pharmacy, a GPhC-registered UK online pharmacy, for just £6.95. It is available without a prescription as a General Sale List medicine. Simply add it to your basket and it will be dispatched to your door.

How does Covonia Chesty Cough Sugar Free Syrup work in the body?

The syrup contains two herbal expectorants — liquorice liquid extract and squill tincture — which help to thin and loosen mucus in the bronchial tubes. This makes it easier for you to cough up and clear the mucus, relieving the congested, heavy feeling in your chest. It works with your body's natural cough reflex rather than suppressing it.

How do I use Covonia Chesty Cough Sugar Free Syrup step by step?

Shake the bottle before use, then measure 5ml to 10ml using the measuring device provided. Swallow the dose directly and repeat up to four times daily, spacing doses evenly. Do not exceed 40ml in 24 hours and do not use for more than 5 consecutive days without medical advice.

What is the correct dose of Covonia Chesty Cough Sugar Free Syrup for adults?

Adults and young people aged 12 and over should take 5ml to 10ml up to four times daily. Always use the measuring device included in the pack to ensure accuracy. Do not exceed the maximum daily dose of 40ml.

Is Covonia Chesty Cough Sugar Free Syrup suitable for people with diabetes?

Because this is a chesty cough sugar free syrup, it is formulated without added sugar, which makes it a more appropriate option for people managing diabetes compared to standard sugar-containing cough syrups. However, you should still check with your pharmacist or GP before use, as other ingredients may be relevant to your individual health needs.

Can I take Covonia Chesty Cough Sugar Free Syrup during pregnancy?

You should consult your GP or midwife before taking any cough remedy during pregnancy, including this one. The safety of liquorice extract and squill tincture during pregnancy has not been fully established, and some herbal ingredients are not recommended in certain trimesters. Always seek professional advice first.

What are the side effects of Covonia Chesty Cough Sugar Free Syrup?

Side effects are uncommon at the recommended dose but may include mild nausea or gastrointestinal discomfort. Allergic reactions such as skin rash are rare but possible — stop use immediately if they occur. Prolonged or excessive use of liquorice-containing products may affect blood pressure or potassium levels, so stick to the recommended duration.

How long can I use Covonia Chesty Cough Sugar Free Syrup for?

This product is intended for short-term use only — no more than 5 consecutive days. If your cough has not improved after 5 days, or if it worsens, is accompanied by a high fever, breathlessness, or blood in your sputum, stop use and consult a GP. Persistent coughs can sometimes indicate a more serious underlying condition.

What happens if I accidentally take too much Covonia Chesty Cough Sugar Free Syrup?

If you take more than the recommended dose, contact NHS 111 or your nearest A&E immediately. Take the product packaging with you so healthcare professionals can identify the ingredients. Do not attempt to induce vomiting unless specifically instructed to do so by a medical professional.

Can children under 12 use Covonia Chesty Cough Sugar Free Syrup?

No — this product is not suitable for children under 12 years of age. If you are looking for cough or cold remedies for younger children, speak to your pharmacist for age-appropriate alternatives. You can also browse our baby and toddler range for products designed for younger age groups.

What is the difference between Covonia Chesty Cough Sugar Free Syrup and the standard version?

Both versions contain the same active herbal ingredients — liquorice liquid extract and squill tincture — and work in the same way as expectorants. The key difference is that the sugar free version is formulated without added sugar, making it more suitable for people with diabetes or those reducing their sugar intake. The standard version contains sugar as an excipient.

Does Covonia Chesty Cough Sugar Free Syrup interact with other medicines?

Liquorice extract may interact with diuretics, corticosteroids, and antihypertensive medicines, potentially affecting potassium levels or blood pressure. Squill tincture may interact with cardiac glycosides at high doses. Always tell your pharmacist about all medicines you are currently taking before starting this product.

What are the alternatives to Covonia Chesty Cough Sugar Free Syrup?

Other OTC expectorants available in the UK include guaifenesin-based syrups such as Robitussin Chesty Cough. The NHS also recommends staying well hydrated and using honey and lemon in warm water as a soothing home remedy for adults. For a broader selection of cough and cold products, explore our cold and flu collection.

Is there any research supporting the use of liquorice and squill as expectorants?

Both liquorice root and squill have a long history of traditional use in European herbal medicine as expectorants and have been included in pharmacopoeial preparations for respiratory complaints. Regulatory approval for their use in OTC cough remedies in the UK is based on their established traditional use, as recognised by the MHRA's Traditional Herbal Registration scheme. Clinical evidence from large randomised trials is limited, which is typical for traditional herbal medicines.

Can I take Covonia Chesty Cough Sugar Free Syrup alongside paracetamol or ibuprofen?

There are no known interactions between this syrup and paracetamol or ibuprofen at standard doses. Many people take a cough syrup alongside a pain reliever to manage multiple cold symptoms simultaneously. That said, always check with your pharmacist if you are taking multiple medicines, and browse our pain relief range for suitable options.

How Should You Use Covonia Chesty Cough Sugar Free Syrup?

Always read the patient information leaflet before use and follow the instructions carefully. This syrup is taken orally — do not mix it with other liquids or dilute it before swallowing. Use the measuring device provided in the pack to ensure you take the correct amount each time.

Follow these steps each time you take a dose:

What Is the Correct Dose of Covonia Chesty Cough Sugar Free Syrup?

The dose varies depending on age. Adults and young people aged 12 and over may take between 5ml and 10ml per dose, up to four times daily. Do not exceed the maximum daily dose under any circumstances.

When Is the Best Time to Use Covonia Chesty Cough Sugar Free Syrup?

There is no single "best" time of day — the key is to space your doses evenly throughout the day to maintain consistent symptom relief. Many people find it helpful to take a dose in the morning, at lunchtime, in the early evening, and before bed, particularly if a chesty cough is disrupting sleep.

Taking a dose before bed may help reduce overnight coughing, which is a common complaint with chesty coughs. However, if your cough is significantly worse at night or is preventing sleep regularly, it is worth speaking to your GP to rule out any underlying cause.

How Long Can You Use Covonia Chesty Cough Sugar Free Syrup For?

This product is intended for short-term use only. Do not use it for more than 5 consecutive days without seeking medical advice. Most chesty coughs associated with a cold or mild respiratory infection will begin to improve within this timeframe as your immune system clears the infection.

If your symptoms persist beyond 5 days, worsen significantly, or are accompanied by a high fever, chest pain, breathlessness, or blood in your sputum, stop use immediately and consult a GP. These symptoms may indicate a more serious condition such as pneumonia or a lower respiratory tract infection that requires medical treatment.

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

What Are the Most Common Side Effects of Covonia Chesty Cough Sugar Free Syrup?

Most people who use this syrup at the recommended dose and for the recommended duration will not experience significant side effects. However, as with any medicine, some people may notice mild reactions, particularly affecting the digestive system.

  • Mild nausea
  • Stomach discomfort or upset
  • A feeling of fullness or bloating

These effects are generally mild and tend to resolve on their own. Taking the syrup with a small amount of water may help reduce any stomach irritation.

What Are the Less Common Side Effects of Covonia Chesty Cough Sugar Free Syrup?

Less common side effects are rare at the recommended dose but are worth being aware of, particularly if you use the product for longer than advised or take more than the stated dose.

  • Skin rash, itching, or hives — which may indicate an allergic reaction
  • Swelling of the face, lips, or throat — a sign of a more serious allergic response
  • Fluid retention or ankle swelling — associated with prolonged use of liquorice-containing products
  • Raised blood pressure — again linked to excessive or prolonged liquorice intake

If you notice any of these effects, stop taking the syrup and seek medical advice promptly.

What Are the Serious Side Effects of Covonia Chesty Cough Sugar Free Syrup?

Serious side effects are uncommon but can occur, particularly with misuse or overuse. Liquorice extract, when consumed in large quantities over a prolonged period, can cause a condition called pseudohyperaldosteronism — characterised by low potassium levels (hypokalaemia), high blood pressure, and fluid retention. This is unlikely to occur with short-term use at the recommended dose, but it is important to stick to the stated guidelines.

If you experience muscle weakness, irregular heartbeat, or significant swelling, stop use immediately and seek urgent medical attention. These could be signs of electrolyte imbalance requiring prompt treatment.

What Should You Do If You Experience Side Effects of Covonia Chesty Cough Sugar Free Syrup?

If you experience any side effect that concerns you — whether listed here or not — stop taking the product and contact your pharmacist or GP. For serious reactions such as difficulty breathing, severe swelling, or chest pain, call 999 or go to your nearest A&E immediately.

You can also report suspected side effects directly to the MHRA via the Yellow Card scheme at yellowcard.mhra.gov.uk. Reporting side effects helps improve the safety information available for all medicines.

Can Covonia Chesty Cough Sugar Free Syrup Interact With Other Medicines?

Yes, interactions are possible. Liquorice extract may reduce potassium levels when taken alongside diuretics (water tablets) or corticosteroids, increasing the risk of hypokalaemia. It may also reduce the effectiveness of antihypertensive medicines. Squill tincture may interact with cardiac glycosides such as digoxin, potentially affecting heart rhythm at high doses. Always inform your pharmacist of all medicines — prescribed or over-the-counter — that you are currently taking before starting this product.

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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