Medication info
Leadflu Soft Capsules

Leadflu Soft Capsules

OTC medicationSoft capsule경구
Ingredient · strength
Acetaminophen›200mg / 1 capsuleGuaifenesin›41.6mg / 1 capsulePseudoephedrine Hydrochloride›15mg / 1 capsuleDL-Methylephedrine Hydrochloride›12.5mg / 1 capsuleDextromethorphan Hydrobromide Hydrate›8mg / 1 capsuleChlorpheniramine Maleate›1.25mg / 1 capsule
Manufacturer / importer
(주)서흥
Appearance
Red, transparent oval soft capsules containing a transparent liquid that is pale yellow to light red
Packaging
10 capsules/box[(10 capsules/PTP)*1]
Approval status
Active

MFDS item code 202201615 · Notified 2022.04.19

Summary

Main use
Relief of cold symptoms (runny nose, nasal congestion, sore throat, etc.)
Who takes it
Adults · Children
Adult dose
15 years old and older: Take 2 capsules 30 minutes after meals three times a day
Child dose
Over 7 years old to under 15 years old: Take 1 capsule 30 minutes after meals three times a day

Ingredients

Manufacturer
(주)서흥

Efficacy & effects

Relief of cold symptoms (runny nose, nasal congestion, sore throat, etc.)

  • Runny nose
  • nasal congestion
  • sneezing
  • sore throat
  • cough
  • phlegm
  • chills
  • fever
  • headache
  • joint pain
  • muscle pain
View approved original text

This medication helps relieve various symptoms caused by a cold. It alleviates runny nose and nasal congestion, reduces sneezing and sore throat, and also helps with cough and phlegm, improving overall symptoms such as chills and fever. It aids in relieving headaches, joint pain, and muscle aches, allowing the patient to recover more comfortably. This medication is used for the relief of cold symptoms.

How to take

Adult dose

15 years old and older: Take 2 capsules 30 minutes after meals three times a day

Child dose

Over 7 years old to under 15 years old: Take 1 capsule 30 minutes after meals three times a day

Precautions

This medication may affect the liver, so individuals who regularly consume three or more alcoholic drinks daily should consult a doctor or pharmacist before taking it. This medication contains acetaminophen, which can cause liver damage in case of overdose, so care should be taken not to exceed the maximum daily dosage. In rare cases, serious skin reactions may occur, so if symptoms such as rash or itching appear, stop taking the medication immediately and consult a professional. Due to the pseudoephedrine component in this medication, symptoms such as fever, redness, and small blisters may occur; if these symptoms appear, stop taking the medication and consult a physician. Individuals with specific health conditions or medication histories, particularly those with asthma, liver disease, kidney disease, hypertension, or women who are pregnant or breastfeeding, must consult a professional before taking this medication. It is safe to avoid taking this medication together with other cold medications, antipyretics, sedatives, or antihistamines during treatment. Children and infants, particularly those under 2 years old, should see a doctor before taking this medication, and it is advisable to avoid administering it if not necessary. Drowsiness may occur while taking this medication, so it is safe to avoid driving or operating machinery. If any unusual symptoms such as rash, vomiting, dizziness, difficulty breathing, or jaundice occur after taking this medication, stop taking it immediately and consult healthcare personnel.

Side effects and when to seek care immediately

Serious side effects

  • Hives, severe swelling, tightness in the chest, difficulty breathing, cold sweats, paleness
  • Severe rash, blisters, peeling skin with high fever, pain in oral/eye mucosa
  • Shortness of breath or difficulty breathing, asthma attack, breathing problems accompanied by cough and fever
  • Yellowing of the skin or eyes (jaundice), extreme lethargy
  • Sudden and severe headache, lightning headache, seizures, confusion, vision abnormalities
  • Significant reduction in urine output

Mild side effects

  • Nausea
  • vomiting
  • loss of appetite
  • constipation
  • swelling
  • difficulty urinating
  • thirst
  • dizziness
  • anxiety
  • tremors
Show 4 more
  • insomnia
  • rash
  • redness
  • itching

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

Interactions

Drug interactions

This medication should not be taken with MAO inhibitors (antidepressants, antipsychotics, mood stabilizers, antiparkinsonian agents, etc.), cough suppressants (cough and phlegm medicines), other cold medications, antipyretics, sedatives, and antihistamines. Individuals who have stopped taking an MAO inhibitor within the last 2 weeks should also avoid using this medication. Caution should be exercised when taken with barbiturates, tricyclic antidepressants, and alcohol.

Storage

This medication should be stored in a tightly sealed container to avoid exposure to air or moisture. Also, it is best to store the medication at room temperature, which should not be too hot or too cold, ideally between 1 degree and 30 degrees Celsius.

Appearance and packaging

Appearance

Red, transparent oval soft capsules containing a transparent liquid that is pale yellow to light red

Package unit

10 capsules/box[(10 capsules/PTP)*1]

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 have sudden severe stomach pain after taking it.

    Ischemic colitis (acute abdominal pain, intestinal bleeding, etc.) related to pseudoephedrine is listed as an adverse reaction. If such symptoms appear, stop taking it immediately and consult your doctor or pharmacist.

    Answers 1 · 2026.09.14

  • QIs it safe for a 7-year-old child to take this?

    According to prescribing information, children over 7 years and under 15 years are advised to take 1 capsule 3 times a day 30 minutes after meals, and therefore, 7-year-olds are not included in this range. Please consult your pharmacist or doctor for an appropriate medication for your child.

    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.