Medication info

Cough Syrup S

OTC medicationSyrup경구
Ingredient · strength
Dextromethorphan Hydrobromide Hydrate›75mg / 100mLDL-Methylephedrine Hydrochloride›131.25mg / 100mLChlorpheniramine Maleate›15mg / 100mLAmmonium Chloride›1000mg / 100mL
Manufacturer / importer
(주)유한양행
Appearance
A light yellowish-brown aromatic syrup contained in aluminum foil packaging
Packaging
6 packets/box [20 milliliters/packet X 6], 12 packets/box [20 milliliters/packet X 12]
Approval status
Active

MFDS item code 196900058 · Notified 1969.11.04

Summary

Main use
Relief of cough and phlegm
Who takes it
Adults · Children
Adult dose
20 mL per dose, taken 3 to 4 times daily after meals and at bedtime.
Child dose
For ages 11 to under 15: 13 mL per dose, for ages 8 to under 11: 10 mL per dose, for ages 5 to under 8: 7 mL per dose, for ages 3 to under 5: 5 mL per dose, for ages 2

Ingredients

Manufacturer
(주)유한양행

Efficacy & effects

Relief of cough and phlegm

  • Cough
  • phlegm
View approved original text

Cough and phlegm are common symptoms of respiratory diseases, often seen in colds or bronchitis. This medication is used to alleviate these symptoms of cough and phlegm.

How to take

Adult dose

20 mL per dose, taken 3 to 4 times daily after meals and at bedtime.

Child dose

For ages 11 to under 15: 13 mL per dose, for ages 8 to under 11: 10 mL per dose, for ages 5 to under 8: 7 mL per dose, for ages 3 to under 5: 5 mL per dose, for ages 2

Precautions

This medication should not be taken by individuals allergic to specific ingredients. Additionally, it should not be used by individuals currently taking or who have recently stopped taking MAO inhibitors such as antidepressants or antipsychotics. It is safe for infants under 3 months or children under 15 years not to take certain formulations of this medication. While taking this medication, it is recommended not to use other cold medications, sedatives, or alcohol. Avoid drinking alcohol while on this medication, and since drowsiness may occur, refrain from driving or operating machinery. Individuals with allergies, liver, kidney, or thyroid conditions, and women who are pregnant or breastfeeding should consult a healthcare professional before taking this medication. Children under 2 years of age should only take this medication if under a doctor's care and deemed necessary. If any unusual symptoms like rash, vomiting, or dizziness occur after taking this medication or if symptoms do not improve, stop taking it immediately and consult a healthcare professional. Be sure to follow the prescribed dosage and administration rules, and when administering to children, a guardian must supervise.

Side effects and when to seek care immediately

Serious side effects

Hives

Mild side effects

  • Rash
  • redness
  • itching
  • nausea
  • vomiting
  • loss of appetite
  • dizziness
  • difficulty urinating
  • persistent or severe thirst
  • anxiety
Show 2 more
  • tremors
  • insomnia

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

Interactions

Drug interactions

Do not take this medication with MAO inhibitors (antidepressants, antipsychotics, mood stabilizers, anti-Parkinson's, etc.), other cough suppressants and expectorants, cold medications, antihistamines, or sedatives. Do not take this medication within 2 weeks of stopping MAO inhibitors.

Food interactions

Do not consume alcohol while taking this medication.

Storage

This medication may be sensitive to air or moisture, so it must be stored in a tightly sealed container. It is important to maintain a storage temperature between 1 and 30 degrees Celsius at room temperature to extend the effectiveness of the medication.

Appearance and packaging

Appearance

A light yellowish-brown aromatic syrup contained in aluminum foil packaging

Package unit

6 packets/box [20 milliliters/packet X 6], 12 packets/box [20 milliliters/packet X 12]

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

  • QI can take it before bedtime, right?

    Yes, the recommended dosage is to take 20mL three to four times a day after meals and at bedtime. It is advised to avoid alcohol while taking this medication, and if you are currently taking or have recently stopped taking an MAO inhibitor as an antidepressant, do not take this medication.

    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.