Patient leaflet - Guaifenesin 200 mg/15 ml syrup
1. What is this medicine and what it is used for?
This medicine contains:
- guaifenesin which is an expectorant to help loosen phlegm.
The cough syrup is used to loosen stubborn mucus (phlegm), catarrh and provide relief from chesty coughs.
2. Is this medicine suitable for you?
Do not take this medicine if you:
- are allergic to guaifenesin or any of the other ingredients.
- suffer from porphyria, which is a type of blood disorder that causes skin or nervous system problems.
Please see your doctor or pharmacist before taking this medicine if you:
- have an intolerance to some sugars.
Are pregnant or breast-feeding, think you may be pregnant or are planning to have a baby. Information about some of the ingredients in this medicine:
- Contains sorbitol (E420) approximately 3.1g per 15ml dose. Sorbitol 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 are genetic disorder in which a person cannot break down fructose, talk to your doctor before taking this medicine.
- Contains 25.1mg of propylene glycol (E1520) per 15ml dose.
Contains less than 1mmol sodium (23mg) per 15ml dose. That is to say essentially
‘sodium-free’.
- Contains the colouring agent ponceau 4R(E124). May cause allergic reactions.
3. How to take this medicine
Shake the bottle well before use.
Adults, the elderly and children 12 years or older: 3 x 5ml spoonfuls. Each dose should be taken as required, but do not repeat the dose more frequently than every 6 hours. Not more than 3 doses should be taken in any 24 hours.
Do not take more medicine than the leaflet tells you to.
Do not give to children under 12 years of age.
Do not take with any other cough and cold medicine.
If your symptoms persist or worsen, you must see a doctor or pharmacist. If you take too much tough liquid by mistake, contact your doctor or pharmacist straight away. Very large doses can cause sickness (nausea and vomiting).
4. Possible side effects
Most people do not have any side effects while taking this medicine. However, if you experience any side effects, or anything else unusual happens, stop taking this medicine immediately, and see your doctor or pharmacist.
Rare side effects are:
- stomach ache and discomfort, nausea (feeling sick), vomiting (being sick).
- allergic reactions such as skin rash.
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 your medicine Keep all medicines out of the sight and reach of children.
Do not store above 25˚C.
Do not use this medicine after the expiry date printed on the pack.
6. What is in this medicine?
Each 15ml dose of liquid contains the active ingredient: guaifenesin 200mg.
The other ingredients are: water, glycerin (E422), sorbitol (E420), sodium cyclamate (E952), sodium saccharin (E954), carrageenan, potassium sorbate (E202). Anise, blackcurrant and menthol flavours (contains triacetin (E1518), propylene glycol (E1520)). Contains ponceau 4R (E124) and caramel (E150).
This product is available in a pack of 150ml and 300ml.
- 7.
Who makes this medicine?
Marketing Authorisation holder and manufacturer: Thornton & Ross Ltd., Linthwaite, Huddersfield, HD7 5QH, UK.
This leaflet was last revised in December 2025.
PL 00240/0594