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Benylin Mucus Cough Night 150ml is a night-time cough syrup formulated to relieve dry or chesty coughs, associated congestion and symptoms that can make it difficult to rest.
Containing three active ingredients — guaifenesin, diphenhydramine hydrochloride and levomenthol — this cough medicine helps loosen chest mucus, relieve associated congestion and aid restful sleep.
A mucus cough, also known as a productive or chesty cough, occurs when phlegm builds up in the airways. This can create an uncomfortable feeling of heaviness in the chest and make coughing more troublesome when trying to rest.
Benylin Mucus Cough Night combines an expectorant with a sedating antihistamine and levomenthol to address several symptoms in one syrup.
Guaifenesin helps thin and loosen mucus so that it is easier to cough up. Diphenhydramine helps relieve cough symptoms and may cause drowsiness, while levomenthol helps relieve the sensation of nasal congestion.
The 150ml bottle is intended for adults and adolescents aged 12 years and over. Because the medicine can cause drowsiness, it is important to follow the dosage and safety instructions carefully.
How Does Benylin Mucus Cough Night Work?
Guaifenesin – Helps Loosen Chest Mucus
Guaifenesin is an expectorant that helps make mucus easier to clear from the airways.
During a chesty cough, mucus can become difficult to bring up. Guaifenesin helps thin and loosen these secretions, allowing phlegm to be coughed up more easily.
Each 5ml contains 100mg guaifenesin.
Each recommended 10ml dose provides 200mg guaifenesin.
Diphenhydramine Hydrochloride – Helps Relieve Cough Symptoms and Aids Rest
Diphenhydramine hydrochloride is a first-generation antihistamine with sedating properties.
It contributes to the product's cough-relieving action and can cause drowsiness, helping aid restful sleep when coughing and congestion are uncomfortable at night.
Each 5ml contains 14mg diphenhydramine hydrochloride.
Each 10ml dose provides 28mg diphenhydramine hydrochloride.
Because this ingredient can affect alertness, avoid driving, cycling or operating machinery if affected.
Levomenthol – Helps Relieve Nasal Congestion
Levomenthol provides a cooling sensation and helps relieve the feeling of nasal congestion associated with coughs and colds.
Each 5ml contains 1.1mg levomenthol.
Each 10ml dose provides 2.2mg levomenthol.
Why Choose a Night-Time Cough Syrup?
Some cough medicines are formulated without sedating antihistamines, making them more appropriate for customers who want to avoid drowsiness.
Benylin Mucus Cough Night contains diphenhydramine, which can cause sleepiness. It may therefore be useful when a cough and associated congestion are interfering with rest.
It should not be used solely as a sleeping aid.
What Is Benylin Mucus Cough Night Used For?
Benylin Mucus Cough Night is indicated for the relief of dry and/or chesty coughs, associated congestive symptoms and to aid restful sleep.
It may help relieve:
- Chesty coughs with mucus or phlegm
- Dry or irritating coughs
- Chest mucus that is difficult to cough up
- Associated nasal congestion
- Cough symptoms that interfere with rest
The medicine provides symptomatic relief. It does not cure the underlying cause of a respiratory infection.
Who Can Use Benylin Mucus Cough Night?
Benylin Mucus Cough Night is intended for adults and children aged 12 years and over.
It may be suitable when a cough is accompanied by congestion and the symptoms make it difficult to rest.
Who Should Not Use It?
Do not use this medicine if:
- You are allergic to diphenhydramine hydrochloride, guaifenesin, levomenthol or another ingredient.
- You are under 12 years of age.
- You are taking a monoamine oxidase inhibitor (MAOI) or have taken one within the previous 14 days.
Do not use this product to sedate a child.
Speak to a doctor or pharmacist before use if you have a chronic respiratory condition, significant liver or kidney problems, glaucoma, prostate enlargement or difficulty passing urine.
How to Take Benylin Mucus Cough Night
Recommended Dosage
Adults and children aged 12 years and over:
Take 10ml at bedtime, followed by 10ml every six hours if required.
Alternatively, take 10ml four times daily.
Maximum dose: Four 10ml doses in 24 hours.
Do not exceed the stated dose.
Children under 12 years: Do not use.
Directions for Use
- Read the product label and Patient Information Leaflet before use.
- Measure 10ml using a suitable medicine-measuring device.
- Take the syrup by mouth.
If using the bedtime schedule, take the first dose at bedtime and leave at least six hours before the next dose. - Do not take more than four doses in any 24-hour period.
Do not take an extra dose if you forget one. Take the next dose only when required and within the recommended dosing limits.
How Long Can I Take It?
If your cough lasts for more than five days, comes back or is accompanied by a fever, rash or persistent headache, consult a doctor or pharmacist.
Seek medical advice sooner if symptoms worsen or new symptoms develop.
Active Ingredients
Each 5ml of Benylin Mucus Cough Night contains:
Diphenhydramine hydrochloride – 14mg
A sedating antihistamine that contributes to cough relief and aids restful sleep.
Guaifenesin – 100mg
An expectorant that helps loosen chest mucus, making phlegm easier to cough up.
Levomenthol – 1.1mg
Helps relieve the sensation of nasal congestion.
Active Ingredients Per 10ml Dose
- Diphenhydramine hydrochloride: 28mg
- Guaifenesin: 200mg
- Levomenthol: 2.2mg
Other Ingredients
The syrup also contains:
- Liquid glucose
- Sucrose
- Ethanol
- Glycerol
- Sodium citrate
- Saccharin sodium
- Citric acid monohydrate
- Sodium benzoate (E211)
- Caramel (E150)
- Raspberry essence
- Natural sweetness enhancer
- Carbomer
- Ponceau 4R (E124)
- Purified water
Check the Patient Information Leaflet for the full ingredient information if you have allergies, intolerances or dietary restrictions.
Important Safety Information
Benylin Mucus Cough Night is a medicine. Always read the label and Patient Information Leaflet before use.
Drowsiness Warning
This medicine may cause drowsiness.
Do not drive, cycle or operate machinery if you feel sleepy, dizzy or otherwise affected.
Do not use this medicine simply to make someone sleep.
Alcohol and Sedating Medicines
Avoid alcoholic drinks while taking Benylin Mucus Cough Night.
Diphenhydramine may increase the sedating effects of alcohol, sleeping tablets, opioid painkillers, tranquillisers and other medicines that affect alertness.
Check with a healthcare professional before combining treatments.
Medicine Interactions
Do not use Benylin Mucus Cough Night if you are taking MAOIs or have taken them within the previous 14 days.
Do not use it alongside another medicine containing diphenhydramine, including certain topical preparations used over large areas of skin.
Do not combine it with a cough suppressant.
Other antihistamines and medicines with anticholinergic effects may increase the risk of side effects.
Medical Conditions Requiring Advice
Consult a doctor or pharmacist before use if you have:
- Asthma or another chronic respiratory condition
- A persistent cough associated with smoking, chronic bronchitis or emphysema
- A cough accompanied by excessive mucus
- Moderate to severe kidney problems
- Liver disease
- Susceptibility to angle-closure glaucoma
- Prostate enlargement
- Difficulty passing urine
Sugar Content
Each 10ml dose contains approximately:
- 7g glucose
- 2g sucrose
This should be considered by people with diabetes.
People with certain rare inherited sugar-intolerance conditions should not take this medicine.
Alcohol Content
The syrup contains approximately 5% alcohol by volume.
Each 10ml dose contains approximately 393mg ethanol.
Avoid alcoholic drinks while taking this medicine.
Other Ingredients Requiring Attention
The product contains Ponceau 4R (E124), a colouring that may cause allergic reactions.
It also contains sodium and sodium benzoate.
Consult the leaflet if these ingredients are relevant to your health or dietary requirements.
Pregnancy and Breastfeeding
If you are pregnant or breastfeeding, consult your doctor or pharmacist before taking this medicine.
Possible Side Effects
Like all medicines, Benylin Mucus Cough Night may cause side effects, although not everyone experiences them.
Possible effects include:
- Drowsiness or reduced alertness
- Dizziness
- Dry mouth
- Nausea or gastrointestinal discomfort
- Allergic reactions
- Occasionally, excitability rather than drowsiness
Stop taking the medicine and seek medical advice if you experience a serious or unexpected reaction.
Overdose Warning
Do not exceed the stated dose.
If someone takes too much Benylin Mucus Cough Night, seek immediate medical advice and take the medicine packaging with you.
Storage
- Keep out of the sight and reach of children.
- Do not store above 30°C.
- Keep the bottle tightly closed.
- Do not use if the bottle seal is broken when purchased.
- Do not use after the expiry date shown on the packaging.
Frequently asked questions
What is Benylin Mucus Cough Night used for?
Benylin Mucus Cough Night is used to relieve dry or chesty coughs, associated congestion and symptoms that interfere with restful sleep.
It contains guaifenesin, diphenhydramine hydrochloride and levomenthol.
Does Benylin Mucus Cough Night make you sleepy?
Yes. It contains diphenhydramine hydrochloride, a sedating antihistamine that can cause drowsiness.
Avoid alcohol, and do not drive or operate machinery if affected.
Does Benylin Mucus Cough Night help loosen phlegm?
Yes. The guaifenesin in the syrup helps thin and loosen chest mucus so that phlegm is easier to cough up.
Can Benylin Mucus Cough Night help a dry cough?
Yes. The licensed indication includes dry coughs, as well as chesty coughs, with associated congestive symptoms.
A pharmacist can advise which formulation best matches your symptoms.
Can I take Benylin Mucus Cough Night during the day?
The licensed dosing instructions allow up to four doses daily.
However, because the medicine can cause drowsiness, it may be unsuitable when you need to remain alert, drive or operate machinery.
Buy Benylin Mucus Cough Night 150ml at Pharmulous
Shop Benylin Mucus Cough Night 150ml at Pharmulous for relief from coughs and associated congestion that can make resting difficult.
Its combination of guaifenesin, diphenhydramine hydrochloride and levomenthol helps loosen chest mucus, relieve congestion and aid restful sleep.
Suitable for adults and children aged 12 years and over, the 150ml syrup offers a night-time treatment option for customers experiencing troublesome cough symptoms.
Benylin Mucus Cough Night is a medicine and may cause drowsiness. Avoid alcohol. Always read the label and Patient Information Leaflet. Do not exceed the recommended dose. Consult a healthcare professional if symptoms persist or worsen.


