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Benylin Cold and Flu Max Strength – 16 Capsules

Benylin Cold and Flu Max Strength – 16 Capsules

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  • ✔️ Relieves fever, headache, and nasal congestion simultaneously
  • ✔️ Contains paracetamol 500mg plus phenylephrine decongestant per capsule
  • ✔️ Caffeine enhances pain relief and combats cold-related fatigue
  • ✔️ Suitable for adults and young people aged 16 and over
  • ✔️ Convenient 16-capsule pack for multi-day cold and flu relief

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What Is Benylin Cold and Flu Max Strength?

 

When a cold or flu hits, it rarely arrives with just one symptom. You get the blocked nose, the pounding head, the aching limbs — all at once. Benylin Cold and Flu Max Strength is a multi-symptom, over-the-counter remedy designed to tackle several of those symptoms simultaneously, so you can get through the day (or night) with a little more comfort. Each pack contains 16 capsules, and at £4.89 it offers straightforward, accessible relief without a prescription. If you're looking for broader cold and flu support, you can also browse our full cold and flu range at Cured Pharmacy.

Cold and flu are among the most common reasons people visit a pharmacist in the UK. The NHS notes that most colds clear up within 7 to 10 days, but the symptoms — fever, congestion, headache, and general malaise — can make those days feel considerably longer. This product is formulated to address that cluster of symptoms in one convenient capsule.

 

How Does Benylin Cold and Flu Max Strength Work?

 

This product works through a combination of three active ingredients, each targeting a different aspect of cold and flu symptoms:

  • Paracetamol 500mg — reduces fever (pyrexia) and relieves pain including headache and body aches by inhibiting prostaglandin synthesis in the central nervous system.
  • Phenylephrine hydrochloride 6.1mg — a sympathomimetic decongestant that causes vasoconstriction in the nasal mucosa, reducing swelling and relieving that blocked, stuffy feeling.
  • Caffeine 25mg — acts as an adjuvant analgesic, enhancing the pain-relieving effect of paracetamol and helping to counteract the fatigue and lethargy that often accompany flu.

Together, these three ingredients address fever, pain, congestion, and tiredness — the core symptoms that make colds and flu so disruptive to daily life.

 

Who Should Use Benylin Cold and Flu Max Strength?

 

This product is intended for adults and young people aged 16 and over who are experiencing the typical symptoms of a cold or flu. It is particularly useful when symptoms are overlapping — for instance, when you have both a fever and nasal congestion at the same time. It is not suitable for everyone, so read the label carefully before use.

It may be suitable for you if you:

  • Are aged 16 or over
  • Have a combination of cold or flu symptoms including fever, headache, blocked nose, or body aches
  • Are not currently taking other paracetamol-containing medicines
  • Do not have liver or kidney problems that would affect paracetamol metabolism

 

How Does Benylin Cold and Flu Max Strength Compare to Similar Products?

 

Feature Benylin Cold and Flu Max Strength Lemsip Max Capsules
Paracetamol per dose 1000mg (2 capsules) 1000mg (2 capsules)
Decongestant Phenylephrine 6.1mg Phenylephrine 6.1mg
Caffeine included Yes — 25mg per capsule Yes — 25mg per capsule
Form Capsule (swallowed) Capsule (swallowed)
Pack size 16 capsules 16 capsules

 

Is Benylin Cold and Flu Max Strength Safe to Store at Home?

 

Yes, provided you follow standard storage guidelines. Keep the capsules below 25°C, away from direct sunlight and moisture. Always store medicines out of the reach and sight of children — this is especially important with products containing paracetamol, as accidental overdose in children is a medical emergency. If you're also managing other health concerns alongside a cold, our vitamins and supplements range includes immune-support options that may complement your recovery.

Check the expiry date before use and do not use the product beyond that date. Do not store in a bathroom cabinet where humidity can affect the capsule shells.

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.

Benylin Cold and Flu Max Strength 16 Capsules specifications
Treatment category Cold and flu relief
Mechanism of action Analgesic/antipyretic (paracetamol), nasal decongestant (phenylephrine), adjuvant analgesic (caffeine)
Effective for Fever, headache, nasal congestion, body aches associated with cold and flu
Suitable for Adults and young people aged 16 and over
Active ingredients Paracetamol 500mg, Phenylephrine hydrochloride 6.1mg, Caffeine 25mg (per capsule)
Pack size 16 capsules
UK classification General Sale Medicine (GSL)
Drug class Analgesic, decongestant, stimulant combination
Preparation Capsule
Route of administration Oral

Specifications of Benylin Cold and Flu Max Strength 16 Capsules

 

What Is Benylin Cold and Flu Max Strength and What Is It Used For?

 

Benylin Cold and Flu Max Strength 16 Capsules is an over-the-counter combination medicine used to relieve the symptoms of colds and flu in adults and young people aged 16 and over. It contains three active ingredients — paracetamol, phenylephrine hydrochloride, and caffeine — working together to reduce fever, ease pain, and relieve nasal congestion. The NHS advises that most cold and flu symptoms can be managed at home with rest, fluids, and appropriate over-the-counter medicines.

 

What Do You Need to Know Before Using Benylin Cold and Flu Max Strength?

 

Before taking these capsules, it is important to check whether this product is right for you. Do not take Benylin Cold and Flu Max Strength if any of the following apply:

  • You are under 16 years of age
  • You are allergic to paracetamol, phenylephrine, caffeine, or any other ingredient in the capsule
  • You have severe liver or kidney disease
  • You have high blood pressure (hypertension) or cardiovascular disease
  • You have an overactive thyroid (hyperthyroidism)
  • You have diabetes
  • You have difficulty urinating due to an enlarged prostate
  • You are pregnant or breastfeeding — speak to your doctor or pharmacist first
  • You are taking or have taken monoamine oxidase inhibitors (MAOIs) within the last 14 days

Be aware of the following drug interactions before use:

  • Other paracetamol-containing medicines — risk of paracetamol overdose
  • Warfarin and other anticoagulants — paracetamol may enhance anticoagulant effect with regular use
  • Other sympathomimetics (e.g. some nasal decongestant sprays) — additive cardiovascular effects with phenylephrine
  • Tricyclic antidepressants — may interact with phenylephrine
  • Beta-blockers — phenylephrine may reduce their effectiveness

 

How Should You Use Benylin Cold and Flu Max Strength?

 

Always read the patient information leaflet supplied with the product and follow the dosage instructions carefully. Taking more than the recommended dose of paracetamol can cause serious liver damage, even if you feel well at the time.

  1. Check you are not already taking any other medicine containing paracetamol.
  2. Swallow 2 capsules whole with a glass of water.
  3. Do not crush or chew the capsules.
  4. Wait at least 4 hours before taking the next dose.
  5. Do not take more than 8 capsules (4 doses) in any 24-hour period.
  6. Do not use for more than 5 consecutive days without medical advice.
Age Group Dose Frequency Maximum in 24 hours
Adults and young people aged 16+ 2 capsules Every 4–6 hours 8 capsules (4 doses)
Children under 16 Not suitable — do not use

 

What Are the Possible Side Effects of Benylin Cold and Flu Max Strength?

 

Like all medicines, this product can cause side effects, although not everyone will experience them. If you are concerned about any side effect, stop taking the capsules and speak to your pharmacist or GP. You can also browse our pain relief range if you need an alternative without a decongestant.

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

  • Nausea or stomach discomfort
  • Difficulty sleeping (insomnia) — related to caffeine content
  • Increased heart rate (palpitations)
  • Restlessness or anxiety — also related to caffeine

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

  • Raised blood pressure
  • Headache (paradoxically, with overuse)
  • Dry mouth
  • Skin rash or itching — stop use immediately if this occurs

Serious allergic reactions (anaphylaxis) are rare but require immediate medical attention. Signs include swelling of the face, lips, or throat, difficulty breathing, or a severe skin reaction. Call 999 if you suspect anaphylaxis.

 

How Should You Store Benylin Cold and Flu Max Strength?

 

Correct storage helps maintain the effectiveness and safety of the product. If you're also managing other symptoms during cold season, our ear, nose and throat range has additional options for congestion and sore throat relief.

  • Store below 25°C in a dry place
  • Keep away from direct sunlight and moisture
  • Do not store in a bathroom or near a sink
  • Keep out of the sight and reach of children
  • Do not use after the expiry date printed on the pack
  • Do not transfer capsules to another container — keep in original packaging
  • Dispose of unused medicines safely via your local pharmacy's medicine return scheme

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 Benylin Cold and Flu Max Strength online in the UK?

You can buy Benylin Cold and Flu Max Strength 16 Capsules directly from Cured Pharmacy online for £4.89, with fast UK delivery. We are a GPhC-registered online pharmacy, so you can order with confidence. Simply add to your basket and check out — no prescription is needed for this over-the-counter product.

How does Benylin Cold and Flu Max Strength work in the body?

The capsules contain three active ingredients that each target a different symptom. Paracetamol reduces fever and relieves pain by inhibiting prostaglandin production in the brain. Phenylephrine constricts blood vessels in the nasal lining to reduce congestion, while caffeine enhances the analgesic effect of paracetamol and helps combat fatigue.

How do I take Benylin Cold and Flu Max Strength step by step?

Take 2 capsules with a full glass of water every 4 to 6 hours as needed. Do not take more than 8 capsules in any 24-hour period, and always check you are not taking any other paracetamol-containing product at the same time. Swallow the capsules whole — do not crush or chew them.

What is the maximum dose of Benylin Cold and Flu Max Strength in 24 hours?

The maximum dose is 8 capsules (4 doses of 2 capsules) in any 24-hour period. You must leave at least 4 hours between each dose. Exceeding this limit increases the risk of paracetamol overdose, which can cause serious liver damage even if you feel well initially.

Can I take Benylin Cold and Flu Max Strength with other cold medicines?

No — you must not take it alongside any other product containing paracetamol, including other cold and flu remedies, as this can lead to accidental overdose. Always check the ingredients list of any other medicine you are taking. If you are unsure, ask your pharmacist before combining products.

Is Benylin Cold and Flu Max Strength suitable for children?

No, these capsules are not suitable for anyone under 16 years of age. If you need cold and flu relief for a younger child, speak to your pharmacist who can recommend an age-appropriate alternative. You can also explore our baby and toddler range for suitable products for younger children.

Can I take Benylin Cold and Flu Max Strength if I have high blood pressure?

You should not take this product if you have high blood pressure (hypertension) without first speaking to your doctor or pharmacist. Phenylephrine, the decongestant ingredient, can raise blood pressure and is generally not recommended for people with cardiovascular conditions. Your pharmacist can suggest a decongestant-free alternative if needed.

What are the side effects of Benylin Cold and Flu Max Strength?

Common side effects include nausea, difficulty sleeping, restlessness, and increased heart rate — the last three are largely related to the caffeine and phenylephrine content. Less commonly, you may experience raised blood pressure, dry mouth, or a skin rash. Stop taking the capsules and seek medical advice if you develop any unusual or severe symptoms.

How long can I take Benylin Cold and Flu Max Strength for?

Do not use these capsules for more than 5 consecutive days without consulting a doctor or pharmacist. If your symptoms persist beyond this period, worsen significantly, or are accompanied by a high fever that does not respond to treatment, you should seek medical advice. Prolonged use without review is not recommended.

Can I take Benylin Cold and Flu Max Strength when pregnant or breastfeeding?

You should speak to your doctor or pharmacist before taking this product if you are pregnant or breastfeeding. While paracetamol is generally considered the pain reliever of choice during pregnancy, the phenylephrine and caffeine components make this combination product unsuitable without medical guidance. Your healthcare provider can advise on safer alternatives.

What happens if I accidentally take too many Benylin Cold and Flu Max Strength capsules?

If you take more than the recommended dose, seek medical attention immediately — even if you feel well. Paracetamol overdose can cause delayed but serious liver damage, and early treatment is essential. Go to your nearest A&E or call 111 straight away and take the packaging with you so medical staff can see exactly what you have taken.

What are alternatives to Benylin Cold and Flu Max Strength?

Similar alternatives include Lemsip Max Capsules and Day Nurse Capsules, which contain comparable active ingredients. If you only need pain and fever relief without a decongestant, plain paracetamol tablets are a simpler option. Browse our cold and flu collection for a full range of alternatives.

Can I drink alcohol while taking Benylin Cold and Flu Max Strength?

It is advisable to avoid alcohol while taking this product. Alcohol combined with paracetamol increases the risk of liver damage, particularly if you drink regularly or in large amounts. The caffeine content may also interact unpredictably with alcohol, so it is safest to abstain until you have finished the course.

Does Benylin Cold and Flu Max Strength make you drowsy?

Unlike some cold and flu remedies that contain antihistamines, Benylin Cold and Flu Max Strength does not contain a sedating ingredient. In fact, the caffeine content may have a mild stimulating effect, which could make it harder to sleep if taken close to bedtime. If you need a night-time formulation, ask your pharmacist about alternatives.

What is the latest guidance on treating cold and flu symptoms at home?

The NHS recommends rest, staying hydrated, and using over-the-counter medicines such as paracetamol or ibuprofen to manage fever and pain. Decongestants like phenylephrine can help with nasal congestion. Antibiotics are not effective against viral infections like colds and flu, so they are not routinely prescribed for these conditions.

How Should You Use Benylin Cold and Flu Max Strength?

Always read the patient information leaflet before taking these capsules. Swallow the capsules whole with a full glass of water — do not crush, chew, or open them. Check that you are not already taking any other medicine containing paracetamol before you start, as doubling up can lead to accidental overdose.

What Is the Correct Dose of Benylin Cold and Flu Max Strength?

The correct dose depends on your age. This product is only licensed for adults and young people aged 16 and over. Taking more than the recommended dose does not improve symptom relief and significantly increases the risk of harm, particularly to the liver.

When Is the Best Time to Use Benylin Cold and Flu Max Strength?

Take the capsules when your symptoms are at their most disruptive — whether that is first thing in the morning when congestion is often worst, or during the day when fever and aches are affecting your ability to function. Because the product contains caffeine, it is worth avoiding a dose close to bedtime if you are sensitive to stimulants, as it may interfere with sleep. A night-time cold remedy without caffeine may be more appropriate for evening use.

Spacing doses evenly throughout the day — roughly every 4 to 6 hours — helps maintain consistent symptom relief rather than waiting until symptoms become severe before taking the next dose.

How Long Can You Use Benylin Cold and Flu Max Strength For?

Do not use these capsules for more than 5 consecutive days. Most cold and flu episodes resolve within 7 to 10 days, but if your symptoms have not improved after 5 days of treatment, or if they worsen at any point, you should stop taking the capsules and consult your GP or pharmacist. A persistent high fever, difficulty breathing, or chest pain warrants urgent medical attention and should not be self-treated.

If you find yourself needing symptom relief beyond 5 days regularly, speak to your doctor to rule out an underlying condition such as sinusitis or a secondary bacterial infection.

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What Are the Most Common Side Effects of Benylin Cold and Flu Max Strength?

Most people tolerate these capsules well when taken as directed, but side effects can occur. The caffeine and phenylephrine components are responsible for most of the commonly reported effects. If any of the following bother you or do not settle after a day or two, stop taking the capsules and speak to your pharmacist.

  • Nausea or mild stomach discomfort
  • Difficulty sleeping or insomnia
  • Restlessness or feeling jittery
  • Increased heart rate (palpitations)
  • Mild headache

What Are the Less Common Side Effects of Benylin Cold and Flu Max Strength?

Less commonly, some people may experience the following. These are not expected in most users but are worth being aware of, particularly if you have any pre-existing cardiovascular or blood pressure concerns.

  • Raised blood pressure
  • Dry mouth
  • Dizziness or light-headedness
  • Skin rash, itching, or hives — stop use immediately if this occurs
  • Difficulty urinating (more likely in men with an enlarged prostate)

What Are the Serious Side Effects of Benylin Cold and Flu Max Strength?

Serious side effects are rare but require immediate medical attention. Paracetamol overdose — which can occur if you accidentally take too much or combine this product with other paracetamol-containing medicines — can cause severe liver damage. Symptoms of liver damage may not appear for several days, which is why it is critical to seek help immediately after any suspected overdose, even if you feel fine.

A serious allergic reaction (anaphylaxis) is very rare but is a medical emergency. Signs include swelling of the face, lips, tongue, or throat, difficulty breathing, a rapid heartbeat, or a sudden drop in blood pressure. Call 999 immediately if you suspect anaphylaxis.

What Should You Do If You Experience Side Effects of Benylin Cold and Flu Max Strength?

For mild side effects such as nausea or difficulty sleeping, try taking the capsules with food and avoid doses close to bedtime. If side effects are persistent, moderate, or worsening, stop taking the product and seek advice from your pharmacist or GP. Do not simply increase the dose or take additional medicines without professional guidance.

If you suspect a serious reaction or overdose, do not wait for symptoms to develop — go to your nearest A&E or call 111 immediately and take the packaging with you.

Can Benylin Cold and Flu Max Strength Interact With Other Medicines?

Yes. This product can interact with several other medicines, which is why it is important to tell your pharmacist about everything you are currently taking. Key interactions include other paracetamol-containing products (risk of overdose), MAOIs (serious cardiovascular risk with phenylephrine), warfarin (paracetamol may enhance anticoagulant effect with regular use), beta-blockers, tricyclic antidepressants, and other sympathomimetic decongestants. Always check with your pharmacist before combining this product with any other medicine, including herbal remedies and supplements.

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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