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Numark Chesty Cough Solution - 200ml

Numark Chesty Cough Solution - 200ml

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  • ✔️ Loosens and clears chest mucus with guaifenesin expectorant
  • ✔️ Suitable for adults and children aged 12 and over
  • ✔️ Helps make chesty coughs more productive and effective
  • ✔️ Provides symptomatic relief from congested, mucus-filled airways
  • ✔️ 200ml bottle offers multiple doses for sustained symptom relief

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What Is Chesty Cough Syrup and How Can It Help You?

 

A chesty cough can be exhausting. That tight, heavy feeling in your chest — the kind that makes every breath feel like hard work — is usually caused by excess mucus building up in your airways. Numark Chesty Cough Solution 200ml is an over-the-counter chesty cough syrup designed to tackle exactly that. It contains guaifenesin, a well-established expectorant that helps thin and loosen mucus so your body can clear it more easily. If you're also dealing with other cold and flu symptoms alongside your cough, you might find our cold and flu remedies collection useful too.

Chesty coughs are extremely common, particularly during autumn and winter. They're often triggered by viral upper respiratory tract infections, and while most resolve on their own, the congestion and discomfort can linger for days. This solution offers a straightforward, pharmacist-recommended option to help manage symptoms while your body recovers.

 

How Does Numark Chesty Cough Solution Work?

 

The active ingredient in this product is guaifenesin 100mg per 5ml. Guaifenesin is classified as an expectorant — it doesn't suppress your cough, it helps make it more productive. Here's how it works:

  • It increases the volume and reduces the viscosity (thickness) of secretions in the respiratory tract.
  • Thinner mucus is easier for the tiny hair-like cilia in your airways to move upward and out.
  • This makes coughing more effective, helping to clear congestion from the bronchi and lungs.
  • The result is a reduction in that heavy, blocked feeling in the chest over time.

It's worth noting that guaifenesin does not treat the underlying cause of your cough — it manages the symptom. If your cough is caused by a bacterial infection, you may need to see your GP for further assessment.

 

Who Should Use Numark Chesty Cough Solution?

 

This product is suitable for adults and children aged 12 and over who are experiencing a productive (chesty) cough with mucus. It is not intended for dry, tickly, or irritating coughs — those require a different type of medicine. So before reaching for this solution, it's worth identifying what kind of cough you have.

This product may be appropriate if you:

  • Have a chesty cough with visible mucus or phlegm when you cough.
  • Are aged 12 years or older.
  • Do not have a known allergy to guaifenesin or any other listed ingredient.
  • Are not currently taking other cough or cold medicines containing guaifenesin.

 

How Does Numark Chesty Cough Solution Compare to Other Chesty Cough Medicines?

 

Feature Numark Chesty Cough Solution 200ml Benylin Chesty Coughs Original
Active ingredient Guaifenesin 100mg/5ml Guaifenesin 100mg/5ml + diphenhydramine
Suitable for driving Generally yes (check label) No — diphenhydramine causes drowsiness
Age suitability 12 years and over 12 years and over
OTC availability Yes Yes

 

Is Numark Chesty Cough Solution Safe to Store at Home?

 

Yes — this chesty cough syrup is straightforward to store safely at home. Keep it below 25°C, away from direct sunlight, and always out of reach of children. Do not use the product after the expiry date printed on the label. Once opened, check the product leaflet for any specific in-use storage guidance.

If you're managing multiple symptoms at once — for example, a cough alongside ear or throat discomfort — it may be worth browsing our ear, nose and throat range for complementary products.

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.

Numark Chesty Cough Solution 200ml specifications
Treatment category Cough remedies / Respiratory
Mechanism of action Expectorant — thins and loosens airway mucus
Effective for Productive (chesty) cough with mucus
Suitable for Adults and children aged 12 years and over
Active ingredient Guaifenesin 100mg per 5ml
Pack size 200ml
UK classification General Sale List (GSL)
Drug class Expectorant
Preparation Oral solution (syrup)
Route of administration Oral

Specifications of Numark Chesty Cough Solution 200ml

 

What Is Numark Chesty Cough Solution and What Is It Used For?

 

Numark Chesty Cough Solution 200ml is an oral liquid medicine used to relieve productive coughs — that is, coughs that bring up phlegm or mucus. It contains guaifenesin, an expectorant that has been used in cough medicines for decades. The NHS notes that most chesty coughs are caused by viral respiratory infections and will resolve without antibiotics, but symptomatic relief can make recovery more comfortable. This product is available without a prescription and is classified as a General Sale List (GSL) medicine in the UK.

 

What Do You Need to Know Before Using Numark Chesty Cough Solution?

 

Before taking this medicine, read the following carefully. Do not use this product if any of the contraindications below apply to you.

Do not use if you:

  • Are allergic to guaifenesin or any other ingredient in the product.
  • Are under 12 years of age.
  • Have a persistent or chronic cough associated with asthma, chronic bronchitis, or emphysema.
  • Have a cough that produces excessive mucus — seek medical advice first.
  • Are pregnant or breastfeeding without first consulting your GP or midwife.

Speak to your pharmacist or GP before use if you:

  • Have liver or kidney problems.
  • Are taking any other cough, cold, or decongestant medicines.
  • Have been told you have a rare hereditary condition affecting sugar metabolism (some formulations may contain sugars or other excipients — check the label).

Known drug interactions:

  • No clinically significant interactions have been established for guaifenesin at standard OTC doses.
  • Avoid combining with other products containing guaifenesin to prevent unintentional double-dosing.
  • If you take any prescribed medicines, check with your pharmacist before use.

 

How Should You Use Numark Chesty Cough Solution?

 

Always use this medicine exactly as described on the label or as directed by your pharmacist. Use the measuring device provided — do not estimate doses using a household spoon.

  1. Shake the bottle gently before each use.
  2. Measure the correct dose using the supplied measuring spoon or cup.
  3. Swallow the liquid directly — do not dilute unless advised.
  4. Drink a full glass of water after each dose to help thin mucus further.
  5. Repeat up to four times daily, leaving at least four hours between doses.
  6. Do not exceed four doses in 24 hours.
Age Group Dose Frequency Maximum daily dose
Adults and children 12+ 10ml (two 5ml spoonfuls) Up to 4 times daily 40ml
Under 12 years Not recommended

 

What Are the Possible Side Effects of Numark Chesty Cough Solution?

 

Like all medicines, this product can cause side effects, although not everyone experiences them. If you're also managing other symptoms such as pain or discomfort, you may find our pain relief range helpful alongside your cough treatment.

Common side effects (may affect up to 1 in 10 people):

  • Nausea
  • Stomach upset or discomfort
  • Headache

Less common side effects (may affect up to 1 in 100 people):

  • Dizziness
  • Vomiting
  • Skin rash or itching (possible allergic reaction — stop use immediately)

Stop taking this medicine and seek medical attention immediately if you develop signs of a serious allergic reaction, such as swelling of the face, lips, or throat, difficulty breathing, or a severe skin reaction.

 

How Should You Store Numark Chesty Cough Solution?

 

Correct storage helps maintain the medicine's safety and effectiveness. If you're building a home medicine cabinet, our first aid collection has a range of essentials to keep alongside your cough remedy.

  • 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.
  • Store out of the sight and reach of children.
  • Do not use after the expiry date printed on the label or bottle.
  • Do not dispose of medicines via wastewater or household waste — return unused medicine to your pharmacy.

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 Numark Chesty Cough Solution online in the UK?

You can order Numark Chesty Cough Solution 200ml directly from Cured Pharmacy, a GPhC-registered UK online pharmacy. It is available without a prescription as an over-the-counter medicine. No GP visit is required — simply add it to your basket and it will be dispatched to your door.

How does Numark Chesty Cough Solution work in the body?

The active ingredient, guaifenesin, works as an expectorant by increasing the water content of mucus in your airways, making it thinner and less sticky. This allows the natural cilia in your respiratory tract to move the mucus upward more efficiently. The result is a more productive cough that clears congestion from the chest more effectively.

How do I use Numark Chesty Cough Solution step by step?

Shake the bottle before use, then measure 10ml using the supplied spoon or cup. Swallow the dose 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.

What is the correct dose of Numark Chesty Cough Solution for adults?

Adults and young people aged 12 and over should take 10ml (two 5ml spoonfuls) up to four times a day. The maximum daily dose is 40ml in 24 hours. Always use the measuring device provided rather than a household spoon, which may not be accurate.

How long does Numark Chesty Cough Solution take to work?

Guaifenesin typically begins to thin and loosen mucus within 30 minutes to an hour of taking a dose, though individual responses vary. You may notice your cough becoming more productive — bringing up more phlegm — before the congestion fully clears. This is a normal sign that the medicine is working.

What are the side effects of Numark Chesty Cough Solution?

Side effects are uncommon but can include nausea, headache, stomach discomfort, or dizziness. Rarely, some people may experience a skin rash, which could indicate an allergic reaction — stop use immediately if this occurs. Contact your pharmacist or GP if any side effect concerns you.

How do I manage side effects of Numark Chesty Cough Solution?

Taking the medicine with or after food can help reduce nausea or stomach upset. Staying well hydrated throughout the day also supports the expectorant action of guaifenesin and may reduce the likelihood of headaches. If side effects persist or are severe, stop use and speak to your pharmacist.

Who is eligible to use Numark Chesty Cough Solution?

This product is suitable for adults and children aged 12 years and over who have a productive chesty cough with mucus. It is not suitable for children under 12, or for people with chronic respiratory conditions such as asthma or emphysema without medical advice. If you are pregnant, breastfeeding, or taking other medicines, consult your GP or pharmacist first.

Can I give Numark Chesty Cough Solution to my child?

This product is not recommended for children under 12 years of age. If your child is under 12 and has a chesty cough, speak to your pharmacist or GP for age-appropriate advice. You can also browse our baby and toddler range for products suitable for younger children.

Can I take Numark Chesty Cough Solution if I am pregnant?

You should consult your GP or midwife before taking any cough medicine during pregnancy, including this product. Guaifenesin has not been fully evaluated in human pregnancy, and your healthcare provider can advise on the safest option for you. Do not self-medicate during pregnancy without professional guidance.

What happens if I miss a dose of Numark Chesty Cough Solution?

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 significantly. Continue as normal and ensure at least four hours between doses.

How long can you use Numark Chesty Cough Solution for?

You should not use this product for more than 7 days without seeking medical advice. Most viral chesty coughs resolve within one to three weeks, but if your symptoms worsen, persist beyond a week, or are accompanied by a high fever or blood in your phlegm, see your GP promptly. Prolonged coughs can sometimes indicate an underlying condition that needs assessment.

Can I take Numark Chesty Cough Solution with other cold and flu medicines?

Be cautious about combining this product with other cough or cold remedies, as many multi-symptom products already contain guaifenesin — taking both could lead to unintentional double-dosing. Always check the ingredient list of any other medicine you are taking. If you're unsure, ask your pharmacist before combining treatments.

What are alternatives to Numark Chesty Cough Solution?

Other guaifenesin-based chesty cough syrups available OTC in the UK include Robitussin Chesty Cough and Benylin Chesty Coughs Original (though the latter also contains diphenhydramine, which causes drowsiness). You can explore the full range of options in our cold and flu collection. Your pharmacist can help you choose the most appropriate product for your specific symptoms.

What are the latest studies on guaifenesin for chesty coughs?

Guaifenesin has been used as an expectorant for many decades and remains one of the most widely studied OTC cough ingredients. Clinical evidence supports its role in reducing mucus viscosity and improving cough productivity in adults with acute respiratory tract infections. The NHS and BNF continue to recognise guaifenesin as an established expectorant for symptomatic relief of productive coughs.

How Should You Use Numark Chesty Cough Solution?

Using this medicine correctly gives it the best chance of working. Always read the label before use and follow the instructions carefully. Drinking plenty of water throughout the day can also help guaifenesin work more effectively by keeping mucus hydrated and easier to clear.

What Is the Correct Dose of Numark Chesty Cough Solution?

The dose depends on age. This product is not suitable for children under 12 years of age — if you need a cough remedy for a younger child, speak to your pharmacist for appropriate alternatives. Always use the measuring device supplied with the product to ensure accuracy.

When Is the Best Time to Use Numark Chesty Cough Solution?

There is no single "best" time of day — this medicine can be taken at any time, up to four times daily. Many people find it helpful to take a dose in the morning when mucus tends to accumulate overnight, and again before bed to ease nighttime congestion. Spacing doses evenly throughout the day — roughly every four to six hours — helps maintain consistent symptom relief.

Taking the medicine with food or a meal can help reduce the chance of stomach upset, particularly if you find your stomach is sensitive to medicines.

How Long Can You Use Numark Chesty Cough Solution For?

This product is intended for short-term use only. Do not use it for more than 7 days without seeking medical advice. Most chesty coughs caused by viral infections will begin to improve within a week, though a residual cough can sometimes linger for two to three weeks after the infection has cleared.

If your cough has not improved after 7 days, is getting worse, is accompanied by a high temperature, chest pain, or you notice blood in your phlegm, stop using this product and see your GP promptly. These symptoms may indicate a more serious condition that requires medical assessment.

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

What Are the Most Common Side Effects of Numark Chesty Cough Solution?

Most people who take Numark Chesty Cough Solution tolerate it well. Side effects are generally mild and tend to resolve on their own without any specific treatment. Taking the medicine with food or a full glass of water can help reduce the likelihood of gastrointestinal discomfort.

  • Nausea
  • Stomach upset or abdominal discomfort
  • Headache

What Are the Less Common Side Effects of Numark Chesty Cough Solution?

Less commonly, some people may experience the following side effects. These affect a smaller proportion of users and are not usually serious, but you should stop taking the medicine and seek advice if they are troublesome or persistent.

  • Dizziness or light-headedness
  • Vomiting
  • Skin rash or itching
  • Drowsiness (uncommon at standard doses)

What Are the Serious Side Effects of Numark Chesty Cough Solution?

Serious side effects from guaifenesin at standard OTC doses are rare. However, you should stop taking this medicine immediately and seek urgent medical attention if you experience any of the following, as they may indicate a serious allergic reaction (anaphylaxis):

  • Swelling of the face, lips, tongue, or throat
  • Difficulty breathing or swallowing
  • Severe skin reaction, including widespread rash or blistering
  • Sudden drop in blood pressure or feeling faint

Call 999 or go to your nearest A&E immediately if you experience any of these symptoms.

What Should You Do If You Experience Side Effects of Numark Chesty Cough Solution?

For mild side effects such as nausea or headache, try taking the medicine with food and drinking plenty of water. If side effects are persistent, worsen over time, or are affecting your daily life, stop use and speak to your pharmacist or GP. You can also report suspected side effects directly to the MHRA via the Yellow Card scheme at yellowcard.mhra.gov.uk — this helps improve medicine safety for everyone.

Can Numark Chesty Cough Solution Interact With Other Medicines?

No clinically significant drug interactions have been established for guaifenesin at standard OTC doses. However, you should always check with your pharmacist before combining this product with other cough, cold, or decongestant medicines, as many multi-symptom products already contain guaifenesin. Taking two products with the same active ingredient simultaneously can lead to unintentional overdose. If you take any prescribed medicines, inform your pharmacist 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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