Medication info
Eldoraon Capsule (Erdosteine)

Eldoraon Capsule (Erdosteine)

OTC medicationHard capsuleOral
Ingredient · strength
Erdosteine›300mg / 1 capsule
Manufacturer / importer
Jeongwoo Pharmaceutical Co., Ltd.
Appearance
Hard capsule with a green upper part and a yellow lower part containing a white powder
Packaging
30 capsules/bottle, 100 capsules/bottle, 300 capsules/bottle
Approval status
Active

MFDS item code 202003252 · Notified 2020.05.01 · Insurance code 694206380

Summary

Main use
Improvement of sputum expectoration in acute and chronic respiratory diseases
Who takes it
Adults
Adult dose
Adults: Take 300 mg of erdosteine orally 2 to 3 times daily. Do not take for more than 10 consecutive days when used for acute respiratory disease.

Ingredients

Manufacturer
Jeongwoo Pharmaceutical Co., Ltd.

Efficacy & effects

Improvement of sputum expectoration in acute and chronic respiratory diseases

  • Acute respiratory diseases
  • chronic respiratory diseases
View approved original text

This medication helps to dissolve mucus and facilitates the expulsion of phlegm when coughing in acute and chronic respiratory diseases. This leads to easier breathing and relief from symptoms. In other words, it is used for mucolysis and expectoration in acute and chronic respiratory diseases.

How to take

Adult dose

Adults: Take 300 mg of erdosteine orally 2 to 3 times daily. Do not take for more than 10 consecutive days when used for acute respiratory disease.

Precautions

This medicine should not be used by patients who are allergic to this medicine or any of its ingredients. It should not be administered to patients with liver cirrhosis or certain enzyme deficiencies, as its metabolites may interfere with normal metabolic processes in the body. Patients with peptic ulcers should avoid this medicine, as it may exacerbate symptoms. It is also safe not to administer this medicine to patients with very poor kidney function or severely impaired liver function. Patients with slightly impaired liver function should use this medicine cautiously and ensure that the daily dosage does not exceed 300 mg. This medicine contains specific dyes, so those with allergic reactions or hypersensitivity to these dyes should use it carefully. Excessive intake may result in symptoms such as excessive sweating, dizziness, and flushing of the face. Gastrointestinal symptoms such as headaches, cold symptoms, shortness of breath, taste disorders, nausea, vomiting, diarrhea, abdominal pain, and heartburn may also occur. Allergic reactions on the skin such as hives, red spots, and eczema may be observed. Fatigue, indigestion, palpitations, and swelling of the face or body have also been reported as potential side effects of this medicine. When taken in combination with cough medications, the relief of coughing may hinder phlegm expulsion, increasing the risk of bronchial infections, so caution should be exercised when used together. Pregnant women or those who may become pregnant, as well as nursing mothers, should avoid taking this medicine as its safety is not established. This medicine should be stored out of reach of children, and care should be taken not to transfer it to another container, as this can result in accidents or deterioration of the medicine's quality.

Side effects

  • sweating
  • dizziness
  • flushing
  • headache
  • cold
  • shortness of breath
  • dysgeusia
  • nausea
  • vomiting
  • diarrhea
Show 18 more
  • upper abdominal pain
  • abdominal pain
  • heartburn
  • urticaria
  • erythema
  • eczema
  • fatigue
  • dyspepsia
  • gastrointestinal disorders
  • acid reflux
  • erythema nodosum
  • palpitations
  • facial swelling
  • generalized edema
  • itching
  • weakness
  • lethargy
  • rash

Not everyone experiences these, and they can vary from person to person.

Interactions

Drug interactions

Consult your doctor or pharmacist if taking this medicine in combination with cough medications.

Storage

This medicine may be sensitive to air or moisture; therefore, it should be stored in a tightly closed container. It is recommended to maintain a storage temperature between 1 degree and 30 degrees Celsius. This helps to preserve the effectiveness of the medicine and ensures safe usage.

Appearance and packaging

Appearance

Hard capsule with a green upper part and a yellow lower part containing a white powder

Package unit

30 capsules/bottle, 100 capsules/bottle, 300 capsules/bottle

Same-ingredient medicines

Even with the same ingredient, strength, dosage form and how it is taken can differ.

Even with the same ingredient, the dose and directions can differ by strength and dosage form. Talk to a doctor or pharmacist before switching from a medication you are already taking.

Questions about this medicine

  • QMy taste has changed after taking it.

    The side effects section mentions altered taste, and if symptoms such as headache, nausea, or rash occur, it advises stopping the medication and consulting a doctor or pharmacist. If symptoms persist, please cease use and seek advice.

    Answers 1 · 2026.09.14

  • QI am also taking cough medicine; is that alright?

    The instructions state that you should consult your doctor or pharmacist when taking this medication with cough medicine. Please show the cough medication you are taking to the pharmacist to confirm whether it can be taken together.

    Answers 1 · 2026.09.14

  • QHow many times a day should I take this medication?

    Adults are advised to take 300 mg at a time, 2 to 3 times a day. When used for acute respiratory diseases, it is advised not to take it continuously for more than 10 days.

    Answers 1 · 2026.09.14

For anything that needs medical judgment, consult a doctor or pharmacist.

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This drug information is based on data provided by the Korea Ministry of Food and Drug Safety.
Consult a doctor or pharmacist for accurate dosage, administration, and usage instructions.