Pharmacy Guide
Patient leaflets and SmPCs, drug interaction checker, official dosages and NHS pharmacy opening hours — all in one place.
Pharmacy Guide
Patient leaflets and SmPCs, drug interaction checker, official dosages and NHS pharmacy opening hours — all in one place.
Boots Mucus Cough Relief 100mg/5ml Oral Solution
⚠ This medicine appears to have been discontinued
The electronic medicines compendium (emc) no longer publishes a Summary of Product Characteristics for this product, which usually means it is no longer marketed in the UK. The patient leaflet below is kept for reference, but the product may not be available.
If you were prescribed this medicine, other products containing Guaifenesin may still be available. Do not stop your treatment — ask your pharmacist or GP what to use instead.
How to take it
this medicine
Check the seal is not broken before first use. If it is, do not take the medicine. Adults, the elderly and children over 12 years old: Take two 5ml spoonfuls, up to 4 times a day. Children under 12 years: Do not use. This medicine should be swallowed. Do not exceed the stated dose. No more than four doses should be taken in any 24 hours. Do not take with other medicines to treat coughs or colds. Stop taking this medicine and contact a healthcare professional if you have had a cough for more than 7 days or if you have any other symptoms which might be related to your cough, for example fever, rash, persistent headache or shortness of breath. If you take more medicine than you should: If you take too much of this medicine, consult your doctor or hospital immediately. Bring any remaining medicine with you to show the doctor. Signs and symptoms that you have taken too much medicine are: nausea and vomiting. If you forget to take your medicine: Take a dose when you need to, provided the last dose was taken at least 4 hours ago. Do not take a double dose to make up for the one you have missed.
Possible side effects
Most people will not have problems, but some may get some. C If you get any of the side effects mentioned below or any other side effects, STOP taking the medicine immediately and contact your doctor: Allergic reactions. Symptoms could include itchy skin or rashes, difficulty breathing, faster heart rate, swelling of the face, neck, tongue or throat Other possible side effects: Feeling sick (nausea), being sick (vomiting), stomach discomfort
Reporting of side effects If you get any side effects, talk to your doctor, pharmacist or nurse. This includes any
Possible side effects
not listed on this carton. You can also report side effects directly via the Yellow Card Scheme at: www.mhra.gov.uk/yellowcard or search for MHRA Yellow Card in the google Play or Apple App Store. By reporting side effects you can help provide more information on the safety of this medicine.
How to store it
this medicine
Do not store above 25°C. Do not refrigerate or freeze. Keep all medicines out of the sight and reach of children. Use by the date on the end flap of the carton or on the label edge.
Active ingredient
Each 5 ml of oral solution contains Guaifenesin 100 mg. Also contains: purified water, liquid sugar (sucrose), glycerol (E422), citric acid, sodium citrate, hyetellose, potassium sorbate (E202), acesulfame potassium, flavours (cream, blackcurrant, menthol). PL 00014/0554 UK Only Text prepared 04/2025 Marketing Authorisation Holder: The Boots Company PLC, Nottingham, NG2 3AA. Manufacturer: Laleham Health and Beauty Limited, Fairfield, Bradshaw Lane, Greenhalgh, Kirkham, Preston, PR4 3JA
Other formats
To request a copy of this carton in Braille, large print or audio please call, free of charge: 0800 198 5000 (UK only) Please be ready to give the following information: Product name: Boots Mucus Cough Relief 100 mg/5 ml Oral Solution Reference number: 00014/0554 This is a service provided by the Royal National Institute of Blind People. If you need more advice, ask your pharmacist.
150 ml
UNITED KINGDOM ONLY
CARTON Recycle BOTTLE Recycle
33-61-543 Lot: Use by:
CT003273
Mucus Cough Relief 100mg/5ml Oral Solution
Mucus Cough Relief
100mg/5ml Oral Solution Read all of this carton for full instructions.
What this medicine is for
This medicine contains Guaifenesin, which belongs to a group of medicines called cough expectorants, which work by changing an unproductive cough to one that is more productive and less frequent.
Mucus Cough Relief
Before you take this medicine ADo not take:
- If you are allergic to guaifenesin or any of the ingredients in this medicine
C Talk to your doctor:
- If you have had a cough for a long time (such as occurs with smoking), chronic bronchitis, emphysema (disease of the lungs), if you have asthma or if you are having an asthma attack
100mg/5ml Oral Solution
C Talk to your pharmacist or doctor:
Guaifenesin
SOOTHES & RELIEVES A MUCUS COUGH Thins & loosens chest mucus Non drowsy
150 ml
- If you are pregnant or breastfeeding
- If you are taking other medicines to treat coughs or colds Information about some of the ingredients: This medicine contains less than 1 mmol sodium (23 mg) per 5 ml, that is to say essentially 'sodium-free'. This medicine contains 1.8 g of liquid sugar (sucrose) per 5ml. This should be taken into account if you have diabetes. If you have been told by your doctor that you have an intolerance to some sugars, contact your doctor before taking this medicine. This medicine contains glycerol which may cause headache, stomach upset and diarrhoea.
BRANDING
Frequently asked questions about Boots Mucus Cough Relief 100mg/5ml Oral Solution
How do I take Boots Mucus Cough Relief 100mg/5ml Oral Solution?
Boots Mucus Cough Relief 100mg/5ml Oral Solution comes as oral solution containing 100mg / 5ml. Always follow the dose your doctor or pharmacist has given you, and read the leaflet that comes with the medicine.
What is the active substance in Boots Mucus Cough Relief 100mg/5ml Oral Solution?
The active substance in Boots Mucus Cough Relief 100mg/5ml Oral Solution is guaifenesin.
Are there equivalent medicines to Boots Mucus Cough Relief 100mg/5ml Oral Solution?
Medicines with the same active substance, strength and form include: Benylin Mucus Cough Max Honey & Lemon Flavour 100 mg/5 ml Syrup, Benylin Mucus Cough Max Menthol flavour 100 mg/5 ml Oral Solution, Boots Chesty Cough Relief 100 mg/5ml Oral Solution. They are interchangeable only if your prescriber or pharmacist says so.
Where does this information come from?
This leaflet reproduces the patient information leaflet approved for Boots Mucus Cough Relief 100mg/5ml Oral Solution, as published on the electronic medicines compendium (emc). The version printed inside your medicine’s packaging is the one that applies to you.
Can I get Boots Mucus Cough Relief 100mg/5ml Oral Solution without a prescription?
Whether a medicine is available over the counter or on prescription only depends on its licence. Check the leaflet, or ask your pharmacist — they can tell you straight away.
About this leaflet
The text above reproduces the patient information leaflet approved for this medicine, restructured for easier reading.
- Source: electronic medicines compendium (emc), Datapharm
- Active substance: guaifenesin
- Official document: view the original leaflet on emc →
⚕For healthcare professionals — Summary of Product Characteristics (SmPC)Full SmPC: dosage, interactions, contraindications, warnings+
4.1. Therapeutic indications
An expectorant for the relief of chesty coughs.
4.2. Posology and method of administration
Adults and children over 12 years:
Two 5ml spoonfuls every four hours up to four times a day.
Children under 12 years:
Not recommended.
Elderly:
There is no need for dosage reduction in the elderly.
For oral administration
4.3. Contraindications
Hypersensitivity to the active substance or any of the excipients.
Not recommended for children under 12 years.
4.4. Special warnings and precautions for use
Should not be used with other cough and cold medicines.
Patients should consult a doctor if they are suffering from a chronic cough such as the one that occurs with smoking, asthma, chronic bronchitis or emphysema. Causes of chronic cough should be excluded if symptoms are persistent. Any accompanying symptoms should be actively sought and appropriately investigated/treated. Stop use and ask a healthcare professional if your cough lasts more than 7 days, comes back or is accompanied by a fever, rash, or persistent headache.
Do not exceed the stated dose.
Keep all medicines out of the reach of children.
This medicine contains glycerin. May cause headache, stomach upset and diarrhoea.
This medicine contains liquid sugar (sucrose). Patients with rare hereditary problems of fructose intolerance, glucose-galactose malabsorption or sucrase-isomaltase insufficiency should not take this medicine.
This medicine contains less than 1 mmol sodium (23 mg) per 5 ml, that is to say essentially 'sodium-free'.
4.5. Interaction with other medicinal products and other forms of interaction
There are no clinically significant interactions.
If urine is collected within 24 hours of a dose of guaifenesin a metabolite of guaifenesin may cause a colour interference with laboratory determinations of urinary 5-hydroxyindoleacetic acid (5-HIAA) and vanillylmandelic acid (VMA).
4.6. Fertility, pregnancy and lactation
If pregnant or breastfeeding, consult a healthcare professional before use.
The safety of guaifenesin when used during pregnancy has not been established. Medical advice should be sought before using guaifenesin during pregnancy and it should not be used unless the potential benefit to the mother clearly outweighs the possible risk to the developing foetus.
Breastfeeding
Guaifenesin is excreted in breast milk in small quantities.
Caution should therefore be exercised by balancing the potential benefit of treatment against any possible risks.
4.7. Effects on ability to drive and use machines
No adverse effects known.
4.8. Undesirable effects
Adverse reactions identified during post-marketing use are listed below by Medical Dictionary for Regulatory Activities (MedDRA) System Organ Class. As these reactions are reported voluntarily from a population of uncertain size, the frequency of these reactions is unknown.
Immune system disorders :
Hypersensitivity reactions, anaphylactic reactions, angioedema
Respiratory, Thoracic and Mediastinal Disorders
Dyspnoea*
*dyspnoea has been reported in association with other symptoms of hypersensitivity
Gastrointestinal disorders:
Nausea, vomiting/gastrointestinal discomfort.
Skin and Subcutaneous Tissue Disorders
Urticaria, rash
Reporting of suspected adverse reactions
Reporting suspected adverse reactions after authorisation of the medicinal product is important. It allows continued monitoring of the benefit/risk balance of the medicinal product. Healthcare professionals are asked to report any suspected adverse reactions via the Yellow Card Scheme at www.mhra.gov.uk/yellowcard or search for MHRA Yellow Card in the Google Play or Apple App store.
4.9. Overdose
In case of overdose, discontinue use and seek professional assistance immediately.
Overdosage may give rise to nausea and vomiting.
Appropriate supportive therapy dependent upon individual response to the preparation. Vomiting would be treated by fluid replacement and monitoring of electrolytes if indicated. Further management should be as clinically indicated or as recommended by the national poison centres where available."
💬 Ask about this leaflet
Ask anything about Boots Mucus Cough Relief 100mg/5ml Oral Solution. The assistant answers only from this leaflet — if the leaflet does not cover it, it will say so. It does not give medical advice.
Answers come from the patient leaflet published on the electronic medicines compendium (emc). They are not medical advice. Ask a pharmacist or your GP if you are unsure. For urgent help call NHS 111, or 999 in an emergency.
Medicines containing Guaifenesin
- Benylin Children's Chesty Coughs
- Benylin Mucus Cough Max Honey & Lemon Flavour 100 mg/5 ml Syrup
- Benylin Mucus Cough Max Menthol flavour 100 mg/5 ml Oral Solution
- Boots Chesty Cough Relief 100 mg/5ml Oral Solution
- Boots Chesty Cough Relief 100 mg/5ml Oral Solution 240 ml
- Covonia Chesty Cough Sugar Free Syrup
- Robitussin Chesty Cough Medicine