Benylin Mucus Cough Night Guaifenesin & Diphenhydramine Syrup - 150ml
Night-time chesty cough syrup: full-strength guaifenesin thins and loosens mucus while diphenhydramine calms the cough and helps you sleep, with soothing levomenthol. Ages 12+, 150ml.
- Thins and loosens mucus.
- Calms the cough so you can sleep.
- Guaifenesin 100mg + diphenhydramine.
- Adults and children over 12.
- Limit: 1 pack per order.
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Pharmacy medicine — pharmacist review
Diphenhydramine — causes drowsiness
See a GP if the cough persists
Product overview
About Benylin Mucus Cough Night
For the cough that's chesty by day and won't let you sleep at night: guaifenesin at full strength to thin and loosen mucus, diphenhydramine to calm the cough and help you rest, and levomenthol to soothe. The night-time partner to Benylin Mucus Cough Max. 150ml bottle, pharmacy-only, for adults and children over 12.
Why loosen mucus at night
Suppressing a chesty cough completely traps the mucus; leaving it alone means coughing all night. Mucus Cough Night splits the difference: the guaifenesin keeps the mucus thin so the coughs you do have are productive, while the diphenhydramine takes the edge off the reflex and adds the drowsiness that lets you sleep between them.
How to take
Adults and children over 12: 10ml at bedtime, repeated every six hours if needed, no more than four doses in 24 hours, using the measuring cup. Not for under-12s. Don't take with any other diphenhydramine, antihistamine or cough and cold product.
Good to know
Causes drowsiness: no driving, no alcohol. Never use it to sedate a child. Ask a pharmacist first with asthma or a long-term chest condition, glaucoma, prostate problems, or in pregnancy or breastfeeding. A cough lasting more than three weeks needs a GP. Pharmacist-reviewed before dispatch.
Product details
- Active ingredients Guaifenesin 100mg per 5ml, Diphenhydramine hydrochloride 14mg per 5ml, Levomenthol 1.1mg per 5ml
- Vendor Benylin
- SKU 3467370
Important information
Please read before purchase. The information provided regarding medicines, dietary supplements or ointments is not to be taken as medical advice.
Consult a healthcare professional prior to use if you are pregnant, nursing, taking medication, or have a medical condition.
Keep out of reach of children. Store in a cool, dry place. Do not use if the seal under the cap is broken or missing. Always read the label and any patient information leaflet before use.
Frequently asked questions
Mucus Cough Night or Mucus Cough Max?
Max is guaifenesin alone, non-drowsy, for the day. Night adds diphenhydramine for bedtime. Many people use both, one by day and one at night.
Can I take it with paracetamol?
Yes — it contains no painkiller. Don't take it with any other antihistamine, sleep aid or cough medicine.
Can children take it?
Only from age 12. For 6 to 12-year-olds, Benylin Children's Night Coughs is the equivalent.
Shipping information
We deliver across mainland UK by Royal Mail Tracked, usually within 3–5 working days.
Delivery is £2.99, or free on orders over £40. You'll get tracking by email once your order is on its way.
For full details, see our Delivery Policy.