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Lemsip Max Cold And Flu Blackcurrant Sachets - 10 Sachets

Lemsip Max Cold And Flu Blackcurrant Sachets - 10 Sachets

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  • ✔️ Relieves fever, sore throat, headache, and nasal congestion simultaneously
  • ✔️ Contains maximum-strength paracetamol 1000mg per sachet
  • ✔️ Phenylephrine decongestant clears blocked nasal passages fast
  • ✔️ Warm blackcurrant drink soothes an irritated sore throat
  • ✔️ Suitable for adults and young people aged 16 and over

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What Are Lemsip Max Cold and Flu Sachets?

 

Lemsip Max Cold and Flu sachets are a well-known over-the-counter remedy designed to tackle the full range of cold and flu symptoms in one warm, comforting drink. Each blackcurrant-flavoured sachet contains two active ingredients — paracetamol and phenylephrine hydrochloride — working together to bring down fever, ease a sore throat, relieve headache, and clear a blocked nose. If you've ever struggled through a working day with a streaming cold, you'll know how much difference a product like this can make. You can find these sachets and other cold and flu treatments in our cold and flu collection.

Each pack contains 10 sachets, priced at £5.35, making it a practical and affordable option to keep in your medicine cabinet during the colder months. The blackcurrant flavour makes it more palatable than some alternatives, particularly when your throat is sore and swallowing feels uncomfortable.

 

How Do Lemsip Max Sachets Work in the Body?

 

Understanding what's actually happening when you take a sachet can help you use it more confidently. The two active ingredients each play a distinct role:

  • Paracetamol (1000mg per sachet): Acts as both an analgesic (pain reliever) and antipyretic (fever reducer). It works centrally in the brain to raise the pain threshold and lower the body's temperature set point during fever.
  • Phenylephrine hydrochloride (12.2mg per sachet): A sympathomimetic decongestant. It causes vasoconstriction — narrowing of the blood vessels — in the nasal mucosa, which reduces swelling and congestion so you can breathe more easily.
  • Hot water: The warm liquid itself can help soothe an irritated throat and loosen mucus, adding a simple but genuine physical benefit alongside the pharmacological action.

The combination means you're not just masking one symptom — you're addressing several at once, which is why these sachets are so widely used during cold and flu season.

 

Who Is Lemsip Max Suitable For?

 

These sachets are intended for adults and young people aged 16 and over. They're particularly useful if you're experiencing a cluster of symptoms rather than just one. That said, they're not appropriate for everyone, so it's worth checking before you use them.

Lemsip Max sachets are suitable for:

  • Adults aged 16 and over with cold or flu symptoms
  • People experiencing fever, headache, sore throat, and nasal congestion simultaneously
  • Those who prefer a hot drink format over tablets or capsules
  • Individuals who find swallowing tablets difficult during illness

They are not suitable for children under 12, and caution is needed for those aged 12–15. Always read the label carefully.

 

How Do Lemsip Max Sachets Compare to Other Cold Remedies?

 

Feature Lemsip Max Blackcurrant Sachets Standard Lemsip Lemon Sachets
Paracetamol dose 1000mg per sachet 650mg per sachet
Decongestant Phenylephrine 12.2mg Phenylephrine 6.1mg
Flavour Blackcurrant Lemon
Suitable age 16 and over 12 and over

 

How Should You Store Lemsip Max Sachets?

 

Proper storage keeps the product effective and safe. Store your Lemsip Max Cold and Flu sachets below 25°C in a dry place, away from direct sunlight and moisture. Bathrooms are not ideal due to humidity — a kitchen cupboard or bedside drawer is usually better. Always keep medicines out of sight and reach of children. If you're also managing other health concerns alongside a cold, our pain relief collection has a range of complementary options.

Check the expiry date printed on each sachet before use. Do not use sachets that are past their expiry date or if the packaging is damaged.

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.

Lemsip Max Cold And Flu Blackcurrant Sachets - 10 Sachets specifications
Treatment category Cold and flu relief
Mechanism of action Analgesic/antipyretic (paracetamol) + nasal decongestant (phenylephrine)
Effective for Fever, sore throat, headache, nasal congestion
Suitable for Adults and young people aged 16 and over
Active ingredients Paracetamol 1000mg, Phenylephrine hydrochloride 12.2mg
Pack size 10 sachets
UK classification General Sale List (GSL)
Drug class Analgesic / Sympathomimetic decongestant
Preparation Powder for oral solution (hot drink)
Route of administration Oral

Specifications of Lemsip Max Cold And Flu Blackcurrant Sachets - 10 Sachets

 

What Is Lemsip Max Cold and Flu Blackcurrant and What Is It Used For?

 

Lemsip Max Cold and Flu Blackcurrant Sachets are an over-the-counter medicine used to relieve the symptoms of colds and flu in adults and young people aged 16 and over. The product contains two active ingredients: paracetamol 1000mg, which reduces fever and relieves pain, and phenylephrine hydrochloride 12.2mg, which acts as a nasal decongestant. Together, they address the most disruptive symptoms — blocked nose, sore throat, headache, and high temperature — in a single hot drink. The NHS notes that most colds clear up on their own within 7 to 10 days, but symptomatic relief can make that time considerably more manageable.

 

What Do You Need to Know Before Using Lemsip Max Sachets?

 

Before using these sachets, it's important to check whether they are appropriate for you. Do not use this product if any of the following apply:

  • You are allergic to paracetamol, phenylephrine, or any other ingredient in the sachet
  • You are under 16 years of age
  • You have severe liver disease or severe kidney disease
  • You have uncontrolled high blood pressure (hypertension)
  • You have a rare tumour of the adrenal gland (phaeochromocytoma)
  • You are currently taking or have taken monoamine oxidase inhibitors (MAOIs) within the last 14 days
  • You have an overactive thyroid (hyperthyroidism)
  • You have closed-angle glaucoma

Speak to your pharmacist or GP before using if you are pregnant, breastfeeding, have heart disease, diabetes, or are taking any other medicines. The following drug interactions are known:

  • Other paracetamol-containing products — risk of paracetamol overdose
  • MAOIs and tricyclic antidepressants — risk of hypertensive crisis
  • Warfarin and other anticoagulants — paracetamol may enhance anticoagulant effect with prolonged use
  • Other sympathomimetics (e.g. some nasal sprays, appetite suppressants) — additive cardiovascular effects
  • Beta-blockers — phenylephrine may reduce their effectiveness

 

How Should You Use Lemsip Max Cold and Flu Sachets Correctly?

 

Always use this medicine exactly as described on the label or as directed by your pharmacist. Follow these steps:

  1. Empty the contents of one sachet into a mug
  2. Add freshly boiled water that has been allowed to cool slightly — hot but not boiling
  3. Stir well until the powder is completely dissolved
  4. Drink while still warm for best effect
  5. Wait at least four hours before taking another sachet
Age Group Dose Frequency Maximum daily dose
Adults and young people aged 16+ 1 sachet Every 4–6 hours 4 sachets in 24 hours
Children under 16 Not suitable — do not use

Do not take more than four sachets in any 24-hour period. If you are also browsing options for ear, nose, and throat discomfort, our ear, nose and throat collection includes a range of targeted products.

 

What Are the Possible Side Effects of Lemsip Max Sachets?

 

Like all medicines, Lemsip Max sachets can cause side effects, although not everyone experiences them. Knowing what to look out for helps you use the product safely.

Common side effects:

  • Nausea or stomach discomfort
  • Difficulty sleeping (insomnia)
  • Dry mouth
  • Headache (if not already present)

Less common side effects:

  • Increased heart rate (palpitations)
  • Raised blood pressure
  • Anxiety or restlessness
  • Skin rash or itching
  • Urinary retention (difficulty passing urine), particularly in men with prostate problems

Serious allergic reactions (anaphylaxis) are rare but require immediate medical attention. Signs include swelling of the face, lips, or throat, difficulty breathing, or a sudden rash. Stop taking the product and call 999 if this occurs. If you're supporting your recovery with additional supplements, our vitamins and supplements collection includes immune-support options.

 

How Should You Store Lemsip Max Sachets Safely?

 

  • 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 sight and reach of children
  • Do not use after the expiry date printed on the sachet
  • Do not dispose of medicines via wastewater or household waste — return unused sachets to your pharmacy

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 Lemsip Max Cold and Flu sachets online in the UK?

You can order Lemsip Max Cold and Flu Blackcurrant Sachets directly from Cured Pharmacy, a GPhC-registered UK online pharmacy, for just £5.35 per pack of 10. Simply add the product to your basket and complete checkout for fast UK delivery. No prescription is needed as this is a General Sale List medicine.

How do Lemsip Max Cold and Flu sachets work in the body?

Each sachet contains paracetamol 1000mg, which reduces fever and relieves pain by acting on the central nervous system, and phenylephrine hydrochloride 12.2mg, which narrows blood vessels in the nasal lining to reduce congestion. The warm liquid also helps soothe a sore throat and loosen mucus. Together, these mechanisms address multiple cold and flu symptoms at once.

How do I use Lemsip Max sachets step by step?

Empty one sachet into a mug, add hot (but not boiling) water, and stir until fully dissolved. Drink the solution while it is still warm for the best soothing effect. Allow at least four hours between doses and do not take more than four sachets in 24 hours.

What is the correct dose of Lemsip Max sachets for adults?

Adults and young people aged 16 and over should take one sachet every four to six hours as needed. The maximum dose is four sachets in any 24-hour period. Do not exceed this dose, as each sachet contains the maximum single dose of paracetamol (1000mg).

What is the best time to take Lemsip Max Cold and Flu sachets?

You can take a sachet at any time of day when symptoms are troublesome, but many people find it particularly helpful first thing in the morning or before bed to ease overnight discomfort. Because phenylephrine can occasionally cause mild insomnia in sensitive individuals, taking the last dose of the day a few hours before sleep may be wise. Space doses evenly throughout the day for consistent symptom relief.

Can I take Lemsip Max sachets with other medicines?

Do not take Lemsip Max sachets alongside any other paracetamol-containing products — including many other cold remedies, painkillers, and some prescription medicines — as this risks paracetamol overdose. They should also not be taken with MAOIs, other decongestants, or beta-blockers without medical advice. Always check with your pharmacist before combining with any other treatment.

Who should not use Lemsip Max Cold and Flu sachets?

These sachets are not suitable for children under 16, people with severe liver or kidney disease, uncontrolled high blood pressure, hyperthyroidism, closed-angle glaucoma, or phaeochromocytoma. They should also be avoided by anyone currently taking or who has recently taken MAOIs. If you are pregnant or breastfeeding, speak to your pharmacist or GP before use.

What are the side effects of Lemsip Max sachets and how do I manage them?

Common side effects include nausea, dry mouth, and difficulty sleeping, which are usually mild and resolve on their own. Less commonly, you may notice palpitations, raised blood pressure, or anxiety due to the phenylephrine content. If you experience a severe allergic reaction — such as facial swelling or difficulty breathing — stop use immediately and call 999.

How long can I use Lemsip Max sachets for?

Do not use Lemsip Max sachets for more than three days without consulting a doctor or pharmacist. If your symptoms persist, worsen, or you develop a high fever that does not respond to treatment, seek medical advice promptly. Prolonged use of decongestants without medical supervision is not recommended.

Are Lemsip Max sachets suitable for people with high blood pressure?

People with uncontrolled high blood pressure should not use Lemsip Max sachets, as phenylephrine can raise blood pressure further. If your blood pressure is well-controlled and you are on medication, speak to your pharmacist before use — they can advise whether it is safe for you individually. There may be alternative cold remedies without a decongestant that are more appropriate.

Can I take Lemsip Max sachets if I am pregnant or breastfeeding?

Paracetamol is generally considered the first-choice pain reliever during pregnancy when used at the lowest effective dose for the shortest time, but phenylephrine is not recommended during pregnancy or breastfeeding. You should always consult your midwife, GP, or pharmacist before taking any medicine during pregnancy or while breastfeeding. Do not self-medicate without professional guidance.

What happens if I accidentally take too many Lemsip Max sachets?

Taking more than the recommended dose is dangerous, particularly because of the paracetamol content — overdose can cause serious liver damage, which may not be immediately apparent. If you think you or someone else has taken too much, go to your nearest A&E or call 999 immediately, even if you feel well. Do not wait for symptoms to appear.

What are the alternatives to Lemsip Max Cold and Flu sachets?

Alternatives include standard-strength Lemsip sachets (lower paracetamol and phenylephrine doses), paracetamol tablets taken alongside a separate decongestant, or ibuprofen-based cold remedies for those who can tolerate NSAIDs. You can explore a range of options in our cold and flu collection. Your pharmacist can help you choose the most suitable product based on your symptoms and medical history.

Is there any difference between Lemsip Max Blackcurrant and Lemsip Max Lemon sachets?

The active ingredients and doses are identical in both flavours — the only difference is the flavouring and colour. Blackcurrant and lemon variants both contain paracetamol 1000mg and phenylephrine hydrochloride 12.2mg per sachet. Choosing between them is purely a matter of personal taste preference.

What are the latest findings on phenylephrine as a nasal decongestant?

In 2023, the US FDA's advisory committee raised questions about the effectiveness of oral phenylephrine as a nasal decongestant, suggesting it may not be significantly more effective than placebo when taken by mouth. However, the MHRA in the UK has not withdrawn products containing oral phenylephrine, and they remain available OTC. If you have concerns, speak to your pharmacist about alternative decongestant options, including those available in our ear, nose and throat collection.

How Should You Use Lemsip Max Cold and Flu Blackcurrant Sachets?

Using these sachets correctly ensures you get the most effective relief from your symptoms while staying safe. Each sachet is designed to be dissolved in hot water and drunk as a warm drink — not swallowed dry or mixed with cold liquid. Follow these steps each time you take a dose:

Do not use more than one sachet at a time. If you find the taste too strong, you may add a little more hot water, but do not dilute it so much that you cannot drink it all — you need the full dose.

What Is the Correct Dose of Lemsip Max Sachets?

The dose depends on your age. These sachets contain the maximum single adult dose of paracetamol (1000mg), so it is essential not to exceed the recommended frequency. Taking more than directed will not relieve symptoms faster and significantly increases the risk of harm.

Never take more than four sachets in any 24-hour period. If you are already taking any other paracetamol-containing medicine, do not use these sachets without speaking to a pharmacist first.

When Is the Best Time to Use Lemsip Max Sachets?

You can take a sachet whenever your symptoms are at their most troublesome. Many people find it helpful to take one first thing in the morning to ease overnight congestion and start the day more comfortably. A sachet before bed can also help reduce fever and ease a sore throat, making it easier to sleep. However, because phenylephrine can occasionally cause mild restlessness in sensitive individuals, try to take your last dose of the day at least two to three hours before you plan to sleep.

Space your doses evenly throughout the day — every four to six hours — rather than taking them all at once or in quick succession. Consistent dosing helps maintain steady symptom relief.

How Long Can You Use Lemsip Max Sachets For?

These sachets are intended for short-term use only. Do not use them for more than three days without consulting a doctor or pharmacist. Most colds and flu episodes improve within seven to ten days, but if your symptoms are not improving after three days of treatment, or if they are getting worse, you should seek medical advice rather than continuing to self-medicate.

Prolonged use of decongestants is not recommended, and extended paracetamol use without medical supervision carries its own risks. If you develop a very high fever, chest pain, difficulty breathing, or a rash, stop use and contact your GP or call NHS 111 promptly.

Do not exceed the recommended dose. If in doubt, speak to your pharmacist.

How Should You Use Lemsip Max Cold and Flu Blackcurrant Sachets?

Using these sachets correctly ensures you get the most effective relief from your symptoms while staying safe. Each sachet is designed to be dissolved in hot water and drunk as a warm drink — not swallowed dry or mixed with cold liquid. Follow these steps each time you take a dose:

Do not use more than one sachet at a time. If you find the taste too strong, you may add a little more hot water, but do not dilute it so much that you cannot drink it all — you need the full dose.

What Is the Correct Dose of Lemsip Max Sachets?

The dose depends on your age. These sachets contain the maximum single adult dose of paracetamol (1000mg), so it is essential not to exceed the recommended frequency. Taking more than directed will not relieve symptoms faster and significantly increases the risk of harm.

Never take more than four sachets in any 24-hour period. If you are already taking any other paracetamol-containing medicine, do not use these sachets without speaking to a pharmacist first.

When Is the Best Time to Use Lemsip Max Sachets?

You can take a sachet whenever your symptoms are at their most troublesome. Many people find it helpful to take one first thing in the morning to ease overnight congestion and start the day more comfortably. A sachet before bed can also help reduce fever and ease a sore throat, making it easier to sleep. However, because phenylephrine can occasionally cause mild restlessness in sensitive individuals, try to take your last dose of the day at least two to three hours before you plan to sleep.

Space your doses evenly throughout the day — every four to six hours — rather than taking them all at once or in quick succession. Consistent dosing helps maintain steady symptom relief.

How Long Can You Use Lemsip Max Sachets For?

These sachets are intended for short-term use only. Do not use them for more than three days without consulting a doctor or pharmacist. Most colds and flu episodes improve within seven to ten days, but if your symptoms are not improving after three days of treatment, or if they are getting worse, you should seek medical advice rather than continuing to self-medicate.

Prolonged use of decongestants is not recommended, and extended paracetamol use without medical supervision carries its own risks. If you develop a very high fever, chest pain, difficulty breathing, or a rash, stop use and contact your GP or call NHS 111 promptly.

Do not exceed the recommended dose. If in doubt, speak to your pharmacist.

What Are the Most Common Side Effects of Lemsip Max Sachets?

Most people tolerate Lemsip Max Cold and Flu Blackcurrant Sachets well when used as directed, but side effects can occur. The most commonly reported ones are generally mild and tend to resolve once you stop taking the product or as your body adjusts.

  • Nausea or mild stomach discomfort
  • Dry mouth
  • Difficulty sleeping (insomnia)
  • Mild headache (unrelated to the cold itself)

What Are the Less Common Side Effects of Lemsip Max Sachets?

Less frequently, some people experience side effects related to the phenylephrine component. These are more likely if you are sensitive to stimulant-type medicines or if you take more than the recommended dose.

  • Palpitations or a faster heartbeat
  • Raised blood pressure
  • Anxiety, restlessness, or feeling jittery
  • Skin rash or itching
  • Difficulty passing urine, particularly in men with an enlarged prostate
  • Pallor (unusual paleness)

If any of these persist or feel severe, stop taking the sachets and speak to your pharmacist or GP.

What Are the Serious Side Effects of Lemsip Max Sachets?

Serious side effects are rare but require immediate medical attention. Paracetamol overdose — which can occur if you take more than the recommended dose or combine these sachets with other paracetamol-containing products — can cause severe liver damage. Worryingly, the signs of paracetamol overdose may not appear for 24 to 72 hours, by which time significant harm may already have occurred. If you suspect an overdose, go to A&E immediately, even if you feel fine.

Serious allergic reactions (anaphylaxis) are also possible, though uncommon. Symptoms include sudden swelling of the face, lips, tongue, or throat, difficulty breathing, a widespread rash, or collapse. This is a medical emergency — call 999 without delay.

What Should You Do If You Experience Side Effects?

For mild side effects such as nausea or dry mouth, try taking the sachet with a small amount of food or drinking extra water alongside it. If insomnia is a problem, avoid taking your last dose too close to bedtime. For any side effect that concerns you, or that does not improve, contact your pharmacist — they can advise whether you should continue, switch to an alternative, or see a doctor.

You can also report side effects directly to the MHRA via the Yellow Card scheme at yellowcard.mhra.gov.uk. Reporting helps improve medicine safety for everyone.

Can Lemsip Max Sachets Interact With Other Medicines?

Yes — interactions are an important safety consideration with this product. The paracetamol content interacts with warfarin (prolonged use may enhance anticoagulant effect) and with any other paracetamol-containing medicine, risking overdose. The phenylephrine content interacts with MAOIs (risk of hypertensive crisis), tricyclic antidepressants, beta-blockers, and other sympathomimetic medicines including some nasal sprays and appetite suppressants. Always tell your pharmacist about every medicine you are taking — including herbal remedies and supplements — before using these sachets.

If you are concerned about any side effects, contact your pharmacist or GP immediately.

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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