By Medically reviewed by Hello Doktor Medical Panel


What is Rhinathiol® (carbocisteine) used for?

Rhinathiol® is a syrup, containing carbocisteine 100 mg and promethazine HCl 2.5 mg per each 5 ml of syrup. It is commonly used for alleviation of unproductive and irritative coughs in adults and children ≥2 years, particularly when coughing occurs at night.

How should I take Rhinathiol® (carbocisteine)?

For orally taken form, you should:

  • Take Rhinathiol® bymouth as directed by your doctor concerning: dose, schedule.
  • Read the label carefully before using Rhinathiol®.
  • Consult your doctor for any information on the label that you do not clearly understand.

How do I store Rhinathiol® (carbocisteine)?

Rhinathiol® is best stored at room temperature away from direct light and moisture. To prevent drug damage, you should not store Rhinathiol® in the bathroom or the freezer. There may be different brands of Rhinathiol® that may have different storage needs. It is important to always check the product package for instructions on storage, or ask your pharmacist. For safety, you should keep all medicines away from children and pets.

You should not flush Rhinathiol® down the toilet or pour them into a drain unless instructed to do so. It is important to properly discard this product when it is expired or no longer needed. Consult your pharmacist for more details about how to safely discard your product.

Precautions & warnings

What should I know before using Rhinathiol® (carbocisteine)?

Before using Rhinathiol®, tell your doctor if you have:

  • Allergic reaction to excipients using for dosage form containing Rhinathiol®.
  • Allergic reaction to any other medicines, foods, dyes, preservatives, or animals.
  • Used any other health conditions, drugs that have a risk of interaction with Rhinathiol®.

Is it safe during pregnancy or breastfeeding?


There isn’t enough information about the safety of using Rhinathiol® during pregnancy and breastfeeding. Please always consult with your doctor to weigh the potential benefits and risks before taking this medication.


Rhinathiol® is excreted in breast milk. Do not take this drug if breastfeeding.

Side effects

What side effects can occur from Rhinathiol® (carbocisteine)?

As taking others medicines, taking Rhinathiol® can cause some side effects. Most of them are rarely occurring and do not need any supplementary treatment. However, it is always important for you to consult your doctor if you have any problem after taking this medicine.

Some of side effects are listed below:

  • Skin rash type (erythema, eczema, purpura, urticaria)
  • Asthma attacks
  • Quincke’s edema
  • Anaphylactic shock
  • Sensitization of the skin under the action of sunlight
  • Bleeding from the nose or gums
  • Drowsiness
  • Memory or concentration disorders
  • Dizziness (more frequent in elderly subjects)
  • Motor incoordination
  • Tremor
  • Confusion
  • Hallucinations
  • Dry mouth
  • Visual disorders
  • Urinary retention
  • Constipation
  • Palpitations
  • Fall in blood pressure
  • Gastrointestinal intolerance phenomena (stomach pains, nausea, diarrhea)

Not everyone experiences these side effects. There may be some side effects not listed above. If you have any concerns about a side-effect, please consult your doctor or pharmacist.


What drugs may interact with Rhinathiol® (carbocisteine)?

Rhinathiol® may interact with other drugs that you are currently taking, which can change how your drug works or increase your risk for serious side effects. To avoid any potential drug interactions, you should keep a list of all the drugs you are using (including prescription drugs, nonprescription drugs, and herbal products) and share it with your doctor and pharmacist. For your safety, do not start, stop, or change the dosage of any drugs without your doctor’s approval.

Does food or alcohol interact with Rhinathiol® (carbocisteine)?

Rhinathiol® may interact with food or alcohol by altering the way the drug works or increase the risk for serious side effects. Please discuss with your doctor or pharmacist any potential food or alcohol interactions before using this drug.

What health conditions may interact with Rhinathiol® (carbocisteine)?

Rhinathiol® may interact with your health condition. This interaction may worsen your health condition or alter the way the drug works. It is important to always let your doctor and pharmacist know all the health conditions you currently have.

These health conditions are:

  • Ulcer of the stomach or duodenum
    • Epilepsy
  • Serious heart disease
  • Epilepsy
  • Asthma or gastroesophageal reflux (in children)
  • Constipation, dizziness or drowsiness presenting with prostatic disorders (in elderly)


The information provided is not a substitute for any medical advice. You should ALWAYS consult with your doctor or pharmacist before using Rhinathiol® (carbocisteine).

What is the dose of Rhinathiol® (carbocisteine) for an adult?

Consult your doctor for information about the dose of Rhinathiol®.

Recommended for adults is 3 to 4 spoons (15 ml to 20 ml) three times a day.

What is the dose of Rhinathiol® (carbocisteine) for a child?

Consult your doctor for information about the dose of Rhinathiol®.

Recommended doses for children are:

  • For children from 2 to 5 years of age, ½ to 1 spoon (2.5 ml to 5 ml) four times a day.
  • For 6-12 years of age, 1½ to 2½ spoons (7.5 ml to 12.5 ml) three times a day.
  • For children from 12 to 15 years of age, 2½ to 3 spoons (12.5 ml to 15 ml) three times a day.
  • If an infant develops a cough, consult the doctor.
    Treatment must be short (a few days) and only at times when coughing occurs.

The dosage has not been established in pediatric patients. It may be unsafe for your child. It is always important to fully understand the safety of the drug before using. Please consult with your doctor or pharmacist for more information.

How is Rhinathiol® (carbocisteine) available?

Rhinathiol® is available in the following dosage forms and strengths:

  • Syrup 5 ml, containing carbocysteine 100 mg and promethazine HCl 2.5 mg.

What should I do in case of an emergency or overdose?

In case of an emergency or an overdose, call your local emergency services or go to your nearest emergency room.

What should I do if I miss a dose?

If you miss a dose of Rhinathiol®, take it as soon as possible. However, if it is almost time for your next dose, skip the missed dose and take your regular dose as scheduled. Do not take a double dose.

Hello Health Group does not provide medical advice, diagnosis or treatment.

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Review Date: January 13, 2017 | Last Modified: December 19, 2019

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