What is a Patient Information Leaflet and why is it useful?

The Patient Information Leaflet (PIL) is the leaflet included in the pack with a medicine. It is written for patients and gives information about taking or using a medicine. It is possible that the leaflet in your medicine pack may differ from this version because it may have been updated since your medicine was packaged.

Below is a text only representation of the Patient Information Leaflet. The original leaflet can be viewed using the link above.

The text only version may be available in large print, Braille or audio CD. For further information call emc accessibility on 0800 198 5000. The product code(s) for this leaflet is: PL 17780/0597.

Carbocisteine 375 mg Capsules, hard



Read all of this leaflet carefully before you start taking this medicine

  • Keep this leaflet. You may need to read it again
  • If you have any further questions, ask your doctor or pharmacist
  • This medicine has been prescribed for you. Do not pass it on to others. It may harm them, even if their symptoms are the same as yours
  • If any of the side effects gets serious, or if you notice any side effects not listed in this leaflet, please tell your doctor or pharmacist

In this leaflet:

1. What Carbocisteine Capsules are and what they are used for
2. Before you take Carbocisteine Capsules
3. How to take Carbocisteine Capsules
4. Possible side effects
5. How to store Carbocisteine Capsules
6. Further information


Carbocisteine 375mg Capsules (called Carbocisteine Capsules in this leaflet) contain a medicine called carbocisteine. This belongs to a group of medicines called ‘mucolytics’. It works by making mucus (phlegm) less sticky. This makes the mucus easier to cough up. Carbocisteine Capsules are used for problems with the breathing passages (respiratory tract). These problems happen when too much mucus is made or the mucus is too sticky.


Do not take this medicine and tell your doctor if:

  • You are allergic (hypersensitive) to carbocisteine or any of the other ingredients of Carbocisteine Capsules (listed in Section 6 below)
  • Signs of an allergic reaction include: a rash, swallowing or breathing problems, swelling of the lips, face, throat or tongue
  • You have an ulcer in your stomach or gut

Do not take this medicine if any of the above apply to you. If you are not sure, talk to your doctor or pharmacist before taking Carbocisteine Capsules.

Warnings and precautions

Talk to your doctor before taking this medicine if:

  • You are elderly.
  • Have had an ulcer in your stomach or gut.
  • You are taking other medicines known to cause bleeding in the stomach.

Pregnancy and breast-feeding

Talk to your doctor before taking this medicine if:

  • You are pregnant, might become pregnant or think you may be pregnant. This medicine should not be taken during the first three months of your pregnancy.
  • You are breast-feeding or planning to breast-feed.

Ask your doctor or pharmacist for advice before taking any medicine if you are pregnant or breast-feeding.

Important Information about some of the ingredients of Carbocisteine Capsules

Carbocisteine Capsules contain:

  • Lactose. This medicine contains lactose. This is a type of sugar. If you have been told by your doctor that you cannot tolerate some sugars, talk to your doctor before taking Carbocisteine Capsules.
  • Sunset yellow (E110): May cause allergic reactions. Signs of an allergic reaction include: a rash, swallowing or breathing problems, swelling of the lips, face, throat or tongue.


Always take Carbocisteine Capsules exactly as your doctor has told you. You should check with your doctor or pharmacist if you are not sure.

Taking this medicine

  • Take this medicine by mouth
  • If you feel that this medicine is too weak or too strong, do not change the dose yourself, but ask your doctor

How much to take

Adults (including the elderly)

  • Usual dose is two capsules, 3 times each day
  • If your symptoms improve, your dose should be lowered to one capsule, 4 times, each day


  • Carbocisteine Capsules are not recommended for children. A paediatric syrup is available for use in children

If you take more Carbocisteine Capsules than you should

If you take more Carbocisteine Capsules than you should, tell a doctor or go to a hospital casualty department straight away. Take the medicine pack with you. This is so the doctor knows what you have taken. If you take too many Carbocisteine Capsules, it is likely that you will get an upset stomach (gastrointestinal disturbance).

If you forget to take Carbocisteine Capsules

If you forget a dose, do not worry. Just wait until the next dose is due. Do not take a double dose to make up for a forgotten dose.

If you have any further questions on the use of this product, ask your doctor or pharmacist.


Like all medicines, Carbocisteine Capsules can cause side effects, although not everybody gets them.

Stop taking Carbocisteine Capsules and see a doctor or go to a hospital straight away if:

  • You have an allergic reaction. The signs may include: a rash, swallowing or breathing problems, swelling of the lips,face, throat or tongue.
  • You have blistering or bleeding of the skin, including around your lips, eyes, mouth, nose and genitals. You may also have flu-like symptoms and fever. This may be something called ‘Stevens-Johnson syndrome’
  • Blood in your vomit or black tarry stools.

Other side effects (frequency not known):

  • Being sick (vomiting)

Talk to your doctor or a pharmacist if you notice any side effects not listed in this leaflet.

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.

By reporting side effects you can help provide more information on the safety of this medicine.


Keep this medicine in a safe place where children cannot see or reach it.

Do not use Carbocisteine Capsules after the expiry date which is stated on the carton after EXP. The expiry date refers to the last day of that month.

Store below 25°C.

Medicines should not be disposed of via wastewater or household waste. Ask your pharmacist how to dispose of medicines no longer required. These measures will help to protect the environment.


What Carbocisteine Capsules contain

  • Each capsule contains 375mg of the active substance, carbocisteine.
  • The other ingredients are magnesium stearate (E572), anhydrous colloidal silica (E551, lactose monohydrate, sodium lauril sulphate, gelatin, quinoline yellow (E104), sunset yellow (E110) and titanium dioxide (E171)

What Carbocisteine Capsules look like and contents of the pack

Carbocisteine Capsules are yellow and printed ‘Mucodyne 375’ in black. They are available in blister packs containing 6, 18, 30 or 120 capsules. Not all pack sizes may be marketed.

Marketing Authorisation Holder and Manufacturer

Marketing Authorisation Holder:

Zentiva Pharma UK Limited
12 New Fetter Lane
United Kingdom


Famar Health Care Services Madrid, S.A.U.
Avda. Leganés, 62
Alcorcón 28923 (Madrid)

This leaflet does not contain all the information about your medicine. If you have any questions or are not sure about anything, ask your doctor or pharmacist.

This leaflet was last revised in August 2019

‘Zentiva’ is a registered trademark © 2019 Zentiva