Benylin 4 Flu – 24 Tablets

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RRP  £7.39
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Olivia Malone - Medical Content Writer
Olivia Malone
Medical Content Writer
James O'Loan - CEO & Superintendent Pharmacist
James O'Loan
CEO & Superintendent Pharmacist

Buy Benylin 4 Flu - 24 Tablets

Benylin 4 Flu - 24 Tablets are designed to relieve cold and flu symptoms. 


How Benylin 4 Flu works

Benylin 4 Flu contains 2 active ingredients: paracetamol and diphenhydramine.

Paracetamol helps to relieve aches, pains and fever. It blocks the chemical messengers in your brain that tell you when you are in pain.

Diphenhydramine is an antihistamine. It helps to relieve coughing, sneezing, and a runny nose. 



Always take Benylin 4 Flu exactly as described in the patient information leaflet or as your doctor / Chemist4U pharmacist has told you. 

Children aged 10-15 years old: Take 1 tablet up to 4 times per day. 

Adults and children over 16 years old: Take 2 tablets up to 4 times per day.

Leave at least 4 hours between doses.

Do not give Benylin 4 Flu to a child under 16 years old for more than 5 days without talking to your doctor or pharmacist.


Side effects

Like all medicines, Benylin 4 Flu may cause side effects in some people, but these won’t affect everybody. Common side effects include: 


  • Difficulty sleeping 
  • Nervousness
  • Dizziness 
  • Difficulty performing tasks 
  • Dry mouth 
  • Thickened mucus 
  • Nausea
  • Blurred vision 
  • Unusual weakness


If you experience any side effects, including any not included in the patient information leaflet, you can report them using the MHRA Yellow Card Scheme.


Serious side effects

Seek emergency medical attention if you notice any signs of a severe allergic reaction, symptoms of which include swelling of the face and throat, skin rash, breathing difficulties and/or loss of consciousness. 



Benylin 4 Flu may be unsuitable for certain people. Do not take these tablets if you are allergic to any of the ingredients or if:


  • You have heart disease or high blood pressure 
  • You have diabetes 
  • You have an overactive thyroid gland 
  • You have pheochromocytoma
  • You have glaucoma 
  • You have severe kidney problems


Talk to your doctor or Chemist4U pharmacist before taking this medicine if: 


  • You have severe liver or kidney issues
  • You have alcohol dependence 
  • You have difficulty passing water and/or an enlarged prostate 
  • You are susceptible to glaucoma 
  • You have blocked arteries of veins 
  • You have bronchitis, emphysema or asthma 
  • You are being treated for a thyroid disorder

Using/taking other medicines

If you are taking or have recently taken any medication including medication obtained without a prescription, talk to your doctor or pharmacist before taking this product.

Talk to your GP or pharmacist if you are taking the following medication:


  • Tricyclic antidepressants (to treat mood disorders)
  • Anticholinergic drugs (to treat cramps and spasms)
  • Tranquilisers (to relax muscles or treat anxiety)
  • Opioid analgesics (to relieve pain e.g. codeine, tramadol, morphine)
  • Antipsychotics (to treat mood disorders)
  • Moclobemide (to treat mood disorders)
  • Cardiac glycosides (to control heart rhythms or contractions)
  • Oxytocin (to help contractions during childbirth)
  • Ergot alkaloids (drugs used to treat migraines)
  • Oral contraception 
  • Metoclopramide or domperidone (used to treat nausea and vomiting)
  • Cholestyramine (used to lower blood cholesterol)
  • Anticoagulants (used to thin blood e.g. warfarin)
  • Anticonvulsants (drugs to treat epilepsy)

Age restrictions 

This product is not suitable for children under 10 years old.


Pregnancy and breastfeeding

If you are pregnant or breastfeeding, think you may be pregnant or are planning to have a baby, you must ask your doctor or Chemist4U pharmacist for advice before taking any new medicine. 


You should avoid alcoholic drinks while taking this medicine.


Driving and operating machinery 

This product causes drowsiness. Do not drive or operate machinery until you feel safe to do so.


Storage information

Store below 25°C in a cool, dry place out of sight and reach of children. Do not use after the expiry date, referring to the last day of the month stated on the packaging. Do not throw away any medicines via wastewater or household waste.


Important information

This product is a medicine; make sure to speak to your doctor or Chemist4U pharmacist before taking this product if you have an underlying medical problem or are taking any other medicine or complementary therapy. If your symptoms get worse or continue after taking this product, contact us or your doctor. For medical services in your area, please refer to

If you are pregnant, trying to become pregnant, or breastfeeding, speak to your doctor or Chemist4U pharmacist before taking this product. If you suffer from any allergies, ask your doctor or Chemist4U pharmacist if this medicine is right for you.

Store all medicines out of sight and reach of children.

Please read the included leaflet carefully before using this product.

Please contact your GP if appropriate regarding this product.

Benylin 4 Flu – 24 Tablets Reviews

By Nicola Green,
December 06, 2023
Was very effective. Eased symptoms fast. Will use again

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