Medication info
Gelafen S Tablet

Gelafen S Tablet

OTC medicationTablet경구
Ingredient · strength
Acetaminophen›400mg / 1 tabletMagnesium Oxide›80mg / 1 tabletFursultiamine›8mg / 1 tablet
Manufacturer / importer
미래바이오제약(주)
Appearance
Yellow elongated film-coated tablets
Packaging
10 tablets/PTP, 30 tablets/bottle
Approval status
Active

MFDS item code 202303361 · Notified 2023.12.18

Summary

Main use
Improvement of pain (headache, toothache, etc.) and fever
Who takes it
Adults
Adult dose
For those aged 15 and older: 1 tablet at a time, 3 times a day, avoiding taking on an empty stomach. The interval between doses should be 4 hours or more.

Ingredients

Manufacturer
미래바이오제약(주)

Efficacy & effects

Improvement of pain (headache, toothache, etc.) and fever

  • Headache
  • toothache
  • post-extraction pain
  • sore throat
  • ear pain
  • joint pain
  • neuralgia
  • low back pain
  • muscle pain
  • shoulder pain
  • bruise pain
  • fracture pain
View approved original text

This medication is used to relieve various types of pain such as headaches, toothaches, sore throat, joint pain, and muscle pain. It also provides an antipyretic effect to alleviate symptoms when experiencing fever or chills. In other words, it effectively reduces discomfort caused by various types of pain and fever, helping to improve comfort in daily life.

How to take

Adult dose

For those aged 15 and older: 1 tablet at a time, 3 times a day, avoiding taking on an empty stomach. The interval between doses should be 4 hours or more.

Precautions

This medication may put a strain on the liver, so people who regularly consume more than three glasses of alcohol daily should consult a doctor or pharmacist before taking it. If severe rashes, blisters, or itching appear on the skin during the use of this medication, stop taking it immediately and consult a specialist. Since it contains acetaminophen, care must be taken not to exceed the specified maximum dose within a day and it should not be taken with other medications that contain acetaminophen. Persons who have had allergic reactions to this drug or its components, those who have experienced asthma, and infants under 3 months of age should not take this medication. Do not take it with other antipyretic analgesics, cold medications, or sedatives, and consult a doctor or pharmacist thoroughly about any current illnesses or medications before taking. Especially, children suspected of having chickenpox or influenza, those with allergic conditions, liver, kidney, or heart diseases, pregnant or nursing women, and the elderly should consult a specialist before use. If symptoms such as rash, vomiting, dizziness, or swelling appear during use, stop taking the medication immediately and consult with medical personnel, and if symptoms do not improve, further medical attention is necessary. Children under the age of 2 should not take this medication except in special cases, and if essential, must follow the doctor's instructions. Follow the prescribed dosage and duration, avoid long-term use, and refrain from alcohol consumption during treatment. There may be side effects when taken with certain medications, so if you are taking other medications, be sure to inform your healthcare provider. Store this medication out of the reach of children, avoid direct sunlight, and keep in a cool, dry place. To maintain quality, be careful not to transfer it to other containers.

Side effects and when to seek care immediately

Serious side effects

  • Hives, severe swelling (edema), tightness in the chest, difficulty breathing, cold sweat, pallor → severe allergic reactions
  • High fever accompanied by severe rash, blisters, peeling skin, pain in mucous membranes of mouth/eyes → severe skin adverse reactions
  • Asthma → respiratory problems
  • Yellowing of skin or eyes (jaundice), extreme lethargy → liver abnormalities (jaundice)

Mild side effects

Rash and reddening (flushing), itching, nausea and vomiting, loss of appetite, constipation, dizziness, swelling (edema), high anion gap metabolic acidosis (HAGMA)

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

Interactions

Drug interactions

Do not take this medication with other antipyretic analgesics, cold medications, or sedatives. Consult a doctor or pharmacist when taking diabetes medications, gout medications, arthritis medications, anticoagulants, or steroids. Consult a doctor or pharmacist when using with barbiturates or tricyclic antidepressants.

Food interactions

Do not consume alcohol while taking this medication.

Storage

Store this medication in a tightly closed container to protect it from air and moisture. It is recommended to maintain a storage temperature of between 1 to 30 degrees Celsius.

Appearance and packaging

Appearance

Yellow elongated film-coated tablets

Package unit

10 tablets/PTP, 30 tablets/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

  • QI'm taking this for toothache; is it okay to take it on an empty stomach?

    It is advised to avoid taking it on an empty stomach. For adults aged 15 and older, the dosage is 1 tablet, taken three times a day, with a minimum interval of 4 hours between doses. Please avoid alcohol while taking 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.