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Lemsip Cough For Chesty Cough – 180ml

Lemsip Cough For Chesty Cough – 180ml

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  • ✔️ Loosens and clears chest mucus with guaifenesin expectorant
  • ✔️ Relieves productive chesty coughs linked to colds and flu
  • ✔️ Non-drowsy formula suitable for daytime use
  • ✔️ Suitable for adults and young people aged 12 and over
  • ✔️ 180ml bottle provides a full multi-day course of treatment

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What Is Lemsip Chesty Cough Syrup and How Does It Help?

 

If you've ever had a chesty cough that just won't shift, you'll know how exhausting it can be. That tight, heavy feeling in your chest, the constant urge to cough, the phlegm that seems impossible to clear — it's miserable. Lemsip chesty cough syrup is an over-the-counter medicine designed specifically to tackle this kind of productive cough, helping to loosen and shift mucus so you can breathe more easily. The 180ml bottle gives you enough for a full course of treatment, making it a practical choice to keep at home during cold and flu season. You can browse the full range of cold and flu remedies at Cured Pharmacy if you need additional support alongside this product.

Chesty coughs are one of the most common reasons people visit a pharmacist in the UK. They typically develop as a complication of a cold, flu, or chest infection, when the airways produce excess mucus as part of the body's immune response. This product is classified as a General Sale List (GSL) medicine in the UK, meaning it can be purchased without a prescription.

 

How Does Lemsip Cough For Chesty Cough Work?

 

The active ingredient in this syrup is guaifenesin 100mg per 5ml. Guaifenesin is an expectorant — a type of medicine that acts on the mucus in your airways to make it thinner and less sticky. Once the mucus is looser, your natural cough reflex can move it upward and out of the airways more effectively. Here's how the process works:

  • Guaifenesin increases the volume and reduces the viscosity (thickness) of secretions in the respiratory tract.
  • Thinner mucus is easier for the cilia (tiny hair-like structures lining the airways) to move upward.
  • This makes coughing more productive, helping to clear the chest more efficiently.
  • As mucus clears, breathing typically becomes easier and the frequency of coughing may reduce.

It's worth noting that this medicine treats the symptom — the cough — rather than the underlying cause. If your cough is due to a bacterial chest infection, you may need antibiotics from your GP. But for the vast majority of chesty coughs associated with colds and viral upper respiratory tract infections, an expectorant like this is exactly what the NHS recommends as first-line self-care.

 

Who Is Lemsip Cough For Chesty Cough Suitable For?

 

This syrup is suitable for most adults and older children, but it's not appropriate for everyone. It's designed for people experiencing a productive cough with mucus — not a dry, tickly cough. If you're unsure which type of cough you have, a pharmacist can help you identify it and choose the right product.

  • Adults aged 18 and over with a chesty, mucus-producing cough
  • Young people aged 12 to 17 (under adult supervision)
  • People experiencing chesty coughs associated with colds or flu
  • Those who prefer a liquid formulation over tablets or capsules

It is not suitable for children under 12 years of age, and caution is advised in people with certain medical conditions (see Section 2 for full contraindications).

 

How Does Lemsip Chesty Cough Compare to Other Cough Syrups?

 

Feature Lemsip Cough For Chesty Cough 180ml Benylin Chesty Coughs Non-Drowsy
Active ingredient Guaifenesin 100mg/5ml Guaifenesin 100mg/5ml
Suitable age 12 years and over 12 years and over
Volume 180ml 150ml
Drowsiness risk Non-drowsy formulation Non-drowsy formulation

 

How Should You Store Lemsip Cough For Chesty Cough?

 

Store this medicine below 25°C in a cool, dry place away from direct sunlight. Keep the bottle tightly closed when not in use. As with all medicines, keep it out of the sight and reach of children. Do not use after the expiry date printed on the label — if in doubt, return it to your pharmacist for safe disposal. If you're managing multiple health conditions and need to store several medicines, it's worth checking our ear, nose and throat range for complementary products that may help with associated symptoms like nasal congestion.

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.

Lemsip Cough For Chesty Cough 180ml specifications
Treatment category Cough and Cold Relief
Mechanism of action Expectorant — thins and loosens airway mucus
Effective for Chesty, productive coughs associated with colds and flu
Suitable for Adults and children aged 12 years and over
Active ingredient Guaifenesin 100mg per 5ml
Pack size 180ml
UK classification General Sale List (GSL)
Drug class Expectorant
Preparation Oral syrup
Route of administration Oral

Specifications of Lemsip Cough For Chesty Cough 180ml

 

What Is Lemsip Cough For Chesty Cough and What Is It Used For?

 

Lemsip Cough For Chesty Cough is an oral expectorant syrup containing guaifenesin 100mg per 5ml. It is used to relieve chesty, productive coughs — the kind where you feel mucus or phlegm in your chest and airways. This type of cough is very common during and after a cold or flu, and it can linger for days or even weeks if the mucus isn't cleared effectively. By making the mucus thinner and easier to cough up, this syrup helps your body do what it's already trying to do — just more efficiently. It is an over-the-counter medicine available without a prescription from UK pharmacies.

 

What Do You Need to Know Before Using Lemsip Cough For Chesty Cough?

 

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

Do not take this medicine if you:

  • Are allergic to guaifenesin or any other ingredient in the syrup
  • Are under 12 years of age
  • Have a persistent or chronic cough associated with asthma, emphysema, or chronic bronchitis (unless advised by a doctor)
  • Have a cough that produces excessive phlegm

Speak to your pharmacist or GP before taking this medicine if you:

  • Are pregnant or breastfeeding
  • Have kidney or liver problems
  • Are taking any other medicines, including herbal remedies
  • Have been told you have phenylketonuria (check the label for phenylalanine content)

Known drug interactions:

  • No significant drug interactions are known at standard OTC doses of guaifenesin
  • Always inform your pharmacist of all medicines you are currently taking
  • Avoid combining with other cough medicines unless advised by a healthcare professional

If you're also dealing with sinus congestion alongside your cough, it may be worth exploring our cold and flu collection for products that address multiple symptoms at once.

 

How Should You Use Lemsip Cough For Chesty Cough?

 

Always use this medicine exactly as described on the label or as directed by your pharmacist. Do not exceed the recommended dose.

  1. Shake the bottle gently before each use.
  2. Measure the correct dose using the measuring cup or spoon provided — do not estimate.
  3. Swallow the syrup directly; do not dilute unless instructed.
  4. Drink a glass of water after each dose to help thin mucus further.
  5. Leave at least 4 hours between doses.
  6. Do not take more than 4 doses in any 24-hour period.
Age Group Dose Frequency Maximum Daily Dose
Adults and children 12+ 10ml (two 5ml spoonfuls) Up to 4 times daily 40ml in 24 hours
Children under 12 Not suitable

 

What Are the Possible Side Effects of Lemsip Cough For Chesty Cough?

 

Like all medicines, this product can cause side effects, although not everyone experiences them. Most people tolerate guaifenesin well at the recommended dose. If you do notice any of the following, stop taking the medicine and speak to your pharmacist.

Common side effects:

  • Nausea or stomach discomfort
  • Vomiting (particularly if taken on an empty stomach)
  • Dizziness

Less common side effects:

  • Headache
  • Skin rash or itching (possible allergic reaction — stop use immediately)
  • Drowsiness in some individuals

Serious allergic reactions to guaifenesin are rare but possible. Signs include swelling of the face, lips, or throat, difficulty breathing, or a severe skin reaction. If you experience any of these, seek emergency medical attention immediately. You can also find additional support products in our pain relief collection if you're managing associated symptoms like headache or sore throat alongside your cough.

 

How Should You Store Lemsip Cough For Chesty Cough?

 

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

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 Lemsip Cough For Chesty Cough online in the UK?

You can buy Lemsip Cough For Chesty Cough 180ml directly from Cured Pharmacy, a GPhC-registered UK online pharmacy. 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 quickly and discreetly.

How does Lemsip chesty cough syrup work in the body?

The active ingredient, guaifenesin, works as an expectorant by increasing the water content of mucus in the airways, making it thinner and less sticky. This allows the cilia — tiny hair-like structures lining the respiratory tract — to move the mucus upward more easily. The result is a more productive cough that clears phlegm from the chest more efficiently.

How do I use Lemsip Cough For Chesty Cough step by step?

Shake the bottle before use, then measure 10ml using the measuring cup provided. Swallow the dose directly and follow it with a full glass of water to help thin mucus further. Repeat up to four times daily, leaving at least four hours between each dose, and do not exceed 40ml in 24 hours.

What is the correct dose of Lemsip Cough For Chesty Cough for adults?

Adults and young people aged 12 and over should take 10ml (two 5ml spoonfuls) up to four times a day. Always leave at least four hours between doses and never exceed four doses in any 24-hour period. If symptoms do not improve within seven days, consult your GP.

Can children under 12 take Lemsip Cough For Chesty Cough?

No — this medicine is not suitable for children under 12 years of age. If your child has a chesty cough, speak to your pharmacist or GP who can recommend an age-appropriate alternative. You can also browse our baby and toddler range for products suitable for younger children.

What are the side effects of Lemsip chesty cough syrup?

Most people tolerate this medicine well, but possible side effects include nausea, vomiting, dizziness, and headache. Rarely, some people may experience a skin rash or allergic reaction — if this happens, stop taking the medicine immediately and seek medical advice. Taking the syrup with or after food can help reduce the chance of stomach upset.

Who is eligible to take Lemsip Cough For Chesty Cough?

This medicine is suitable for adults and young people aged 12 and over who have a productive, mucus-producing chesty cough. It is not suitable for those with chronic respiratory conditions such as asthma or emphysema unless a doctor has advised otherwise. Pregnant or breastfeeding women should consult their GP or pharmacist before use.

What happens if I miss a dose of Lemsip Cough For Chesty Cough?

If you miss a dose, simply take the next one when it is due — do not double up to make up for a missed dose. This medicine is taken as needed for symptom relief rather than on a strict schedule, so missing one dose is unlikely to affect your recovery. Just ensure you leave at least four hours between doses.

What is the difference between a chesty cough and a dry cough?

A chesty cough is productive, meaning it brings up mucus or phlegm from the airways, and is often caused by a cold, flu, or chest infection. A dry cough, by contrast, is irritating and tickly with no mucus production, and is often triggered by throat irritation or post-nasal drip. It's important to use the right type of cough medicine for your symptoms — an expectorant like this one is only appropriate for chesty coughs.

What are the alternatives to Lemsip Cough For Chesty Cough?

Other guaifenesin-based expectorant syrups available in the UK include Benylin Chesty Coughs Non-Drowsy and Robitussin Chesty Cough. All contain the same active ingredient at the same concentration, so the choice often comes down to personal preference, price, or bottle size. You can explore the full range of options in our ear, nose and throat collection.

How long can you use Lemsip Cough For Chesty Cough for?

You should not use this medicine for more than seven days without seeking medical advice. If your cough persists beyond a week, worsens, or is accompanied by a high fever, chest pain, or blood in the phlegm, you should see your GP promptly. Prolonged coughs can sometimes indicate a more serious underlying condition that requires investigation.

Can I take Lemsip Cough For Chesty Cough if I am pregnant?

If you are pregnant or think you might be pregnant, you should speak to your doctor or pharmacist before taking this medicine. Guaifenesin has not been fully evaluated in human pregnancy, and a healthcare professional will be able to advise you on the safest option for your situation. The same applies if you are breastfeeding.

Can I take Lemsip Cough For Chesty Cough with other cold and flu medicines?

You should be cautious about combining this syrup with other cough or cold medicines, as some products contain multiple active ingredients and doubling up could lead to taking too much of a particular substance. Always check the ingredients of any other medicines you are taking and ask your pharmacist if you are unsure. Never take two cough medicines at the same time without professional guidance.

Is the best time to take Lemsip Cough For Chesty Cough before or after food?

There is no strict requirement to take this medicine with food, but if you find it causes nausea, taking it after a meal or snack may help settle your stomach. Drinking a full glass of water with each dose is recommended regardless, as staying well hydrated helps to thin mucus naturally and supports the expectorant action of guaifenesin.

What does the latest research say about guaifenesin for chesty coughs?

Guaifenesin has been used as an expectorant for decades and remains one of the most widely recommended OTC treatments for productive coughs in UK clinical guidance. The NHS advises that most chesty coughs associated with colds will resolve on their own, but expectorants can help ease symptoms in the meantime. If you want to support your overall health during recovery, our vitamins and supplements range includes products that may help support immune function.

How Should You Use Lemsip Cough For Chesty Cough?

Using this syrup correctly gives it the best chance of working effectively. Always read the label before use and follow the instructions carefully. Shake the bottle well before each dose to ensure the medicine is evenly mixed.

Here's a step-by-step guide to using this medicine correctly:

What Is the Correct Dose of Lemsip Cough For Chesty Cough?

The dose depends on your age. This medicine is not suitable for children under 12 years of age. Always use the measuring device provided with the bottle to ensure accuracy, and never exceed the maximum daily dose.

When Is the Best Time to Use Lemsip Cough For Chesty Cough?

There is no single "best" time of day to take this medicine — it can be taken at any time, up to four times daily. However, many people find it helpful to take a dose in the morning to help clear overnight mucus build-up, and again before bed to ease nighttime coughing. If you find the syrup causes mild stomach discomfort, taking it after food or a light snack can help.

Staying well hydrated throughout the day is also important. Drinking plenty of water between doses supports the expectorant action of guaifenesin and helps keep mucus thin and easier to clear naturally.

How Long Can You Use Lemsip Cough For Chesty Cough For?

This medicine should not be used for more than 7 consecutive days without seeking medical advice. Most chesty coughs associated with a cold or flu will begin to improve within a few days of treatment. If your cough has not improved after a week, or if it worsens at any point, you should consult your GP — a persistent cough can sometimes indicate a chest infection or another condition that requires further assessment.

If you develop a high fever, chest pain, shortness of breath, or notice blood in your phlegm at any point, stop using this medicine and seek medical attention promptly. These symptoms may indicate a more serious condition that requires professional treatment.

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

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What Are the Most Common Side Effects of Lemsip Cough For Chesty Cough?

Most people who take this medicine at the recommended dose do not experience significant side effects. Guaifenesin is generally well tolerated, but as with any medicine, some people may notice mild unwanted effects, particularly when first starting treatment.

  • Nausea or feeling sick
  • Vomiting, especially if taken on an empty stomach
  • Stomach discomfort or upset
  • Dizziness

Taking the syrup after food or a light snack can help reduce the likelihood of stomach-related side effects. Drinking a full glass of water with each dose is also recommended.

What Are the Less Common Side Effects of Lemsip Cough For Chesty Cough?

Less commonly, some people may experience the following side effects. These are not typical but are worth being aware of before you start treatment.

  • Headache
  • Drowsiness or fatigue
  • Skin rash or itching
  • Urticaria (hives)

If you notice a skin rash, itching, or any other unusual reaction after taking this medicine, stop use immediately and speak to your pharmacist or GP. These symptoms could indicate a mild allergic reaction to one of the ingredients.

What Are the Serious Side Effects of Lemsip Cough For Chesty Cough?

Serious side effects from guaifenesin at standard OTC doses are rare. However, a severe allergic reaction (anaphylaxis) is possible, though uncommon. You should seek emergency medical help immediately if you experience any of the following:

  • Swelling of the face, lips, tongue, or throat
  • Difficulty breathing or swallowing
  • Sudden and severe skin reaction (blistering, peeling, or widespread rash)
  • Rapid heartbeat or feeling faint

Do not ignore these symptoms. Call 999 or go to your nearest A&E department without delay if you suspect a serious allergic reaction.

What Should You Do If You Experience Side Effects of Lemsip Cough For Chesty Cough?

If you experience mild side effects such as nausea or dizziness, try taking the medicine with food and ensure you are drinking enough water throughout the day. Most mild side effects will resolve on their own without any additional treatment. If side effects persist or become bothersome, stop taking the medicine and speak to your pharmacist.

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 used in the UK.

Can Lemsip Cough For Chesty Cough Interact With Other Medicines?

No significant drug interactions have been identified for guaifenesin at standard OTC doses. However, you should always inform your pharmacist of all medicines you are currently taking — including prescription medicines, over-the-counter products, and herbal remedies — before starting any new treatment. Avoid taking this syrup alongside other cough medicines without professional guidance, as combining products could lead to unintended duplication of ingredients.

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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