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Terms Of Use


Brand Name(s) : Mucodyne
Side Effects


Carbocisteine should be used with caution by patients with a history of stomach (peptic) ulceration.

It should not be used by:

  • People who are allergic (hypersensitive) to carbocisteine or any of the other ingredients
  • People with an active stomach (peptic) ulcer
  • Children under 2 years old.

Also see list of precautions and interactions


Store below 25 C.


What is it used for?

  • Carbocisteine is used to treat patients with problems with their breathing passages (respiratory tract).
  • It is a mucolytic.
  • It is used to reduce the amount of mucus (phlegm) and make it less sticky, which then makes it easier to cough up.
  • In general this drug is used to treat patients when they produce too much mucus (phlegm) or when the mucus (phlegm) is too sticky.
  • Benefits of being on this drug can include being able to breathe more freely by allowing the patient to cough up mucus (phlegm) more easily.

Listed below are the typical uses of carbocisteine:

  • Used to reduce the amount of mucus (phlegm) in the breathing passages of patients with conditions such as chronic obstructive pulmonary disease (long term obstruction of the flow of air through the airways and out of the lungs), chronic productive cough (long term cough which produces much mucus (phlegm).

On occasion your doctor may prescribe this medicine to treat a condition not on the above list.


How often do I take it?

  • This medication is available in a capsule or as a syrup (one strength of syrup for adults and one for children).
  • Take this medication by mouth usually three to four times a day. Your doctor may advise you to take an initial higher dose and then reduce it once your body responds to the medication.
  • Use this medication regularly in order to get the most benefit from it.
  • Remember to use it at the same time each day - unless specifically told not to by your doctor.
  • It may take up to an hour or so before the full benefit of this drug takes effect.
  • Certain medical conditions may require different dosage instructions as directed by your doctor.

What dose?

  • Dosage is based on your age, gender, medical condition, response to therapy, and use of certain interacting medicines.

Do I need to avoid anything?

  • None known. Consult your doctor or pharmacist for more details.

When can I stop?

  • Always complete the full course as prescribed by your doctor.


No common side effects reported.

Tell your doctor immediately if you develop any of the following symptoms: blood in your vomit or black tarry stools.

Remember that your doctor has prescribed this medication because he or she has judged that the benefit to you is greater than the risk of side effects. Many people using this medication do not have serious side effects.

A serious allergic reaction to this drug is unlikely, but seek immediate medical attention if it occurs. Symptoms of a serious allergic reaction include: rash, itching/swelling (especially of the face/tongue/throat), dizziness, trouble breathing.

This is not a complete list of possible side effects. If you notice other effects not listed above, contact your doctor or pharmacist.

The Yellow Card Scheme allows you to report suspected side effects from any type of medicine (which includes vaccines, herbals and over the counter medicines) that you are taking. It is run by the medicines safety watchdog called the Medicines and Healthcare products Regulatory agency (MHRA). Please report any suspected side effect on the Yellow Card Scheme website.


Before taking carbocisteine, tell your doctor or pharmacist if you are allergic to it or to other mucolytics, or if you have any other allergies.

This medication should not be used if you have certain medical conditions. Before using this medicine, consult your doctor or pharmacist if you have active stomach (peptic) ulcers.

Before using this medication tell your doctor or pharmacist your medical history, especially if you have a history of stomach (peptic) ulcers.

Before having surgery, tell your doctor or dentist that you are taking this medication.

Does alcohol intake affect this drug?

  • None known.

The elderly: there is no need to alter the adult dose of Carbocisteine for the elderly.

Pregnancy and breastfeeding - please ensure you read the detailed information below


The safety of carbocisteine has not been established during pregnancy. It should be avoided in the first trimester. Ask your doctor or pharmacist if you have any doubts or questions about this.

It is sensible to limit use of medication during pregnancy whenever possible. However, your doctor may decide that the benefits outweigh the risks in individual circumstances and after a careful assessment of your specific health situation.

If you have any doubts or concerns you are advised to discuss the medicine with your doctor or pharmacist.


It is not known whether carbocisteine passes into breast milk. The manufacturer therefore states that it should not be taken if you are breastfeeding.

It is sensible to limit use of medication during breastfeeding whenever possible. However, your doctor may decide that the benefits outweigh the risks in individual circumstances and after a careful assessment of your specific health situation.

If you have any doubts or concerns you are advised to discuss the medicine with your doctor or pharmacist.


Before using this medicine, tell your prescriber of all the medicines you are taking including prescription medicines and medicines you have bought over the counter without a prescription. Tell your prescriber if you are taking vitamins or complementary remedies such as herbal products, as these can also interact with medicines.

There are no known significant interactions between carbocisteine and other medicines. If you experience any unusual symptoms while using this medicine with other medicines, tell your prescriber.

If you have a question or want to discuss anything about your medicine, speak to your local pharmacist.


Taking too much carbocisteine may cause an upset stomach.

People who have taken too much Carbocisteine should tell a doctor or go to a hospital casualty department straight away.

If you think you, or someone you care for, might have accidentally taken more than the recommended dose of Carbocisteine or intentional overdose is suspected, contact your local hospital, GP or if in England call 111. In Scotland call NHS 24. In Wales, call NHS Direct Wales. In the case of medical emergencies, always dial 999.


If you miss a dose, take it as soon as you remember. If it is near the time of the next dose, skip the missed dose and resume your usual dosing schedule. Do not double the dose to catch up.

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Source: Selected from data included with permission and copyrighted by Boots UK Limited. This copyrighted material is sourced from a licensed data provider and is not for distribution, except as may be authorised by the applicable terms of use.
CONDITIONS OF USE: The information in this database is intended to supplement, not substitute for, the expertise and judgement of healthcare professionals. The information is not intended to cover all possible uses, directions, precautions, drug interactions or adverse events, nor should it be construed to indicate that use of a particular medicine is safe, appropriate or effective for you or anyone else. A healthcare professional should be consulted before taking any medicine, changing any diet, or discontinuing any course of treatment.

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