Patient leaflet - Lemsip Max All in One
1. What this medicine is and what it is used for?
This medicine provides short term relief of cold and flu symptoms, including aches and pains, headache, feverishness, blocked nose, tickly sore throat and chesty coughs. Paracetamol is an analgesic (relieves pain) and antipyretic (reduces fever). Phenylephrine Hydrochloride is a nasal decongestant; it reduces swelling of the blood vessels in the nasal passages, helping you to breathe more easily. Guaifenesin is an expectorant which loosens phlegm so will relieve chesty coughs. Cetylpyridinium Chloride is an antiseptic and anti-infective which will ease tickly sore throats.
2. What you need to know before you take this medicine
Do not take this medicine if:
- You are allergic to any ingredient (see Section 6 for further information).
- You have a serious heart condition.
- You have high blood pressure (hypertension) or an overactive thyroid.
- You are taking or have taken within the last 14 days a medicine called a monoamine oxidase inhibitor (MAOI), usually used to treat depression.
- You are taking other sympathomimetic decongestants.
- You have an enlarged prostate; phaechromocytoma; diabetes mellitus; or closed-angle glaucoma.
Do not give to children under 16 years of age
Warnings and precautions
Talk to your doctor or pharmacist before taking this medicine if:
- You have Raynaud's syndrome (poor blood circulation which makes the fingers or toes pale and numb).
- You have a problem with your liver or kidneys.
- You have non-cirrhotic liver disease (liver disease that is not associated with changes in the structure of the liver).
- You are suffering from porphyria (a rare blood disease).
- You experience persistent or chronic cough, or if you are using any other cough suppressants.
During treatment with this medicine, tell your doctor straight away if:
You have severe illnesses, including severe renal impairment or sepsis (when bacteria and their toxins circulate in the blood leading to organ damage), or you suffer from malnutrition, chronic alcoholism or if you are also taking flucloxacillin (an antibiotic). A serious condition called metabolic acidosis (a blood and fluid abnormality) has been reported in patients in these situations when paracetamol is used at regular doses for a prolonged period or when paracetamol is taken together with flucloxacillin. Symptoms of metabolic acidosis may include: serious breathing difficulties with deep rapid breathing, drowsiness, feeling sick (nausea) and being sick (vomiting).
Other medicines and Lemsip Max All in One Liquid
- Do not take with other paracetamol-containing products.
- Do not use with any other product for the relief of colds, flu or congestion.
- This medicine may interfere with the results of some urine tests. If you are having any urine tests, tell the doctor or hospital staff that you are taking this medicine.
Talk to your doctor or pharmacist if you are taking:
- Beta-blockers for high blood pressure, other antihypertensives or vasodilators (drugs used to treat high blood pressure, leg pain due to vascular problems or Raynaud's syndrome, including, ramipril, losartan, amlodipine).
- Tricyclic antidepressants (a specific class of drugs used to treat depression).
- Other medicines. Some drugs may affect the way in which paracetamol works, including those used to treat blood cholesterol (cholestyramine) and nausea and vomiting (metoclopramide and domperidone). The effect of blood thinning drugs (warfarin and other coumarins) may be increased by paracetamol. Some drugs may affect the way in which phenylephrine works (MAOIs; other sympathomimetic amines (ephedrine, pseudoephedrine); antihypertensives (ramipril, losartan, amlodipine); tricyclic antidepressants; digoxin and cardiac glycoside).
- Flucloxacillin (antibiotic), due to a serious risk of blood and fluid abnormality (called high anion gap metabolic acidosis) that must have urgent treatment (see warnings and precautions).
- Medicines used to treat epilepsy (phenytoin and carbamazepine), medicines used to treat sleeping problems (barbiturates such as pentobarbital, phenobarbital), as they may increase side effects on liver.
- Isoniazid (medicine used to treat tuberculosis), it may increase side effects of paracetamol.
- Oxytocin (medicine used to help contractions during childbirth) and ergot alkaloids (medicines used to treat migraine, such as, ergotamine, methylsergide), they may increase the risk of brain stroke (stroke caused by bleeding inside the brain).
Tell your doctor or pharmacist if you are taking, have recently taken or might take any other medicines.
Pregnancy and breast-feeding
This product should not be used in women with a history of pre-eclampsia.
Ask your doctor or pharmacist for advice before taking this product if you are pregnant or breast-feeding.
This medicine contains:
- Liquid Maltitol (2g per 20ml dose) If you have been told by your doctor that you have an intolerance to some sugars, contact your doctor before taking this medicinal product.
- Sorbitol (3g in each 20ml dose) which is a source of fructose. If your doctor has told you that you have an intolerance to some sugars or if you have been diagnosed with hereditary fructose intolerance (HFI), a rare genetic disorder in which a person cannot break down fructose, contact your doctor before you taking this medicine. Sorbitol ma y cause gastrointestinal discomfort and mild laxative effect.
- Ethanol (alcohol) 3000 mg in each 20ml dose. The amount in a 20ml dose of this medicine is equivalent to less than 80 ml beer or 32 ml wine. The amount of alcohol in this medicine is not likely to have an effect in adults and adolescents, and its effects in children are not likely to be noticeable It may have some effects in younger children, for example feeling sleepy. The alcohol in this medicine may alter the effects of other medicines. Talk to your doctor or pharmacist if you are taking other medicines. If you are pregnant or breast-feeding, talk to your doctor or pharmacist before taking this medicine. If you are addicted to alcohol, talk to your doctor or pharmacist before taking this medicine.
- Sodium: This medicine contains less than 1 mmol sodium (23 mg) per 20ml, that is to say essentially ‘sodium-free’.
- This medicine contains 4.3g propylene glycol in each 20 ml dose. If you are pregnant or breast-feeding, do not take this medicine unless recommended by your doctor. If you suffer from a liver or kidney disease, do not take this medicine unless recommended by your doctor. Your doctor may carry out extra checks while you are taking this medicine.
3. How to take this medicine
Sake the bottle for at least 10 seconds before use. For oral use only.
Never give more medicine than shown in the table.
Always use the measuring cup supplied with the pack.
Do not overfill the measuring cup.
Do not give this medicine with any other paracetamol-containing product. Do not give more than 4 doses in any 24 hour period.
Leave at least 4 hours between doses.
Do not give this medicine to your child for more than 5 days without speaking to your doctor or pharmacist.
| Age | Dose and how often to take |
| Adults (16 years and over) | Fill the measure cup with 10-20ml for each dose. Take one dose up to 4 times per day. Leave at least 4 hours between doses, and do not take more than 4 doses in any 24 hours. Wipe the neck of the bottle clean and replace the cap securely, without over-tightening it. Rinse the measure cup after use. |
For short term use only. If symptoms do not go away talk to your doctor. Do not exceed the stated dose. Do not give to children under 16 years of age. | |
As with all medicines, if your child is currently taking any medicine consult your doctor or pharmacist before taking this product.
If you forget to take this medicine:
Do not take a double dose to make up for forgotten individual doses.
If you take too much medicine:
Talk to a doctor at once if you take too much of this medicine, even if you feel well. This is because too much paracetamol can cause delayed, serious liver damage. You may experience symptoms of dizziness, palpitations (irregular or forceful heartbeat), stomach pain or high blood pressure with headache, unhealthy pale appearance (pallor), feeling sick (nausea) or vomiting if you take too much of this medicine. Severe poisoning can cause problems with the blood’s ability to clot.
4. Possible side-effects
Most people take Lemsip Max All in One Liquid without any problems but, like all medicines, it can cause side effects.
If you experience any of the following symptoms, or have any other unusual symptoms or concerns with your medicine, stop taking it and talk to your pharmacist or doctor:
Very rare cases (1 in 10,000 patients treated)
- Cases of serious skin reactions have been reported.
Frequency not known
- Skin rashes or other allergic reactions.
- Rarely blood disorders (these may be seen as unusual bleeding or unexplained bruises, sore throat, ulcers in your mouth or throat, fever, unusual tiredness or weakness).
- Changes in the number of blood cells, such as, thrombocytopenia (reduction in blood platelets which might mean that you bleed or bruise more easily), leucopoenia, pancytopenia, neutropenia and agranulocytosis (reduction in white blood cells which make infections more likely).
- A serious condition that can make blood more acidic (called metabolic acidosis), in patients with severe illness using paracetamol (see section 2).
- Nausea and Vomiting.
- Headaches, high blood pressure or palpitations.
- Abdominal discomfort and diarrhoea.
- Difficulty in passing urine (especially in males).
Reporting of side effects
If you get any side effects, talk to your doctor, pharmacist or nurse. This includes any possible side effects not listed in this leaflet. You can also report side effects directly via the Yellow Card Scheme at: www.mhra.gov.uk/yellowcard or search for MHRA Yellow Card in the Google Play or Apple App Store.
By reporting side effects, you can help provide more information on the safety of this medicine.
5. How to store this medicine
Keep this medicine out of the sight and reach of children.
Do not use after the expiry date printed on the label and carton.
Do not use if solids can be seen in the solution.
Do not store above 25°C. In order to protect from light, keep the container in the outer carton. Keep the container tightly closed.
6. Contents of the pack and other information
What is in this medicine:
The active ingredients are: Paracetamol 1000mg, Phenylephrine Hydrochloride
12.18mg, Guaifenesin 200mg, Cetylpyridinium Chloride 3.0mg in each 20ml dose.
The other ingredients are: Liquid Maltitol, Sorbitol (E420), Ethanol, Propylene Glycol,
Glycerol (E422), Saccharin Sodium, Sodium Cyclamate, Acesulfame Potassium, Sodium Citrate, Anhydrous Citric Acid (E330), Xantham Gum (E415), Levomenthol, Eucalyptus Oil, colours Quinoline Yellow (E104), Patent Blue V (E131) and Purified Water.
What this medicine looks like and contents of the pack
Lemsip Max All in One Liquid is a green solution.
This medicine is available in bottles containing 160ml of liquid (8 doses).
Marketing Authorisation Holder and Manufacturer:
Reckitt Benckiser Healthcare (UK) Ltd, Hull, HU8 7DS, UK. (PL 00063/0625)
Manufacturer:
RB NL Brands B.V. WTC Schiphol Airport, Schiphol Boulevard 207, 1118 BH Schiphol, Netherlands.
Date of revision: October 2025.
Lemsip and the Lemsip logo are trademarks of the Reckitt group of companies.