Medication info

Zerofen Tablet

OTC medicationTablet경구Approval withdrawn
Ingredient · strength
Chlorzoxazone›250mg / 1 tabletAcetaminophen›300mg / 1 tablet
Manufacturer / importer
(주)넥스팜코리아
Appearance
Pale blue oval film-coated tablets
Packaging
10 tablets/PPT
Approval status
Approval withdrawn

MFDS item code 201907949 · Notified 2019.11.15

This product's status changed to Approval withdrawn on 2023.09.22. It may no longer be sold, so consult a doctor or pharmacist before taking it.

Summary

Main use
Relief of muscle tension due to neuralgia and muscle pain
Who takes it
Adults
Adult dose
2 tablets per dose, taking up to 4 times daily, avoiding administration on an empty stomach. Adjust as appropriate according to age and symptoms.

Ingredients

Manufacturer
(주)넥스팜코리아

Efficacy & effects

Relief of muscle tension due to neuralgia and muscle pain

  • Neuralgia
  • muscle pain
  • joint pain
  • low back pain
  • sprain pain
  • shoulder pain
  • muscle spasms
  • muscle stiffness
View approved original text

This medication is used to alleviate various types of pain such as neuralgia, muscle pain, joint pain, back pain, pain from sprains, and shoulder pain. It is also effective for various conditions associated with abnormal muscle tension, such as muscle spasms or muscle stiffness. This drug alleviates pain and muscle tension to reduce inconvenience in daily life. Therefore, it is used for pain management and muscle relaxation.

How to take

Adult dose

2 tablets per dose, taking up to 4 times daily, avoiding administration on an empty stomach. Adjust as appropriate according to age and symptoms.

Precautions

This medication may cause liver damage if taken by individuals who regularly consume more than three alcoholic drinks a day; therefore, consultation with a doctor or pharmacist is essential. This medication contains acetaminophen, and caution is needed as taking it with other acetaminophen-containing products may exceed the maximum daily dosage, leading to a risk of liver damage. Individuals allergic to chlorzoxazone or acetaminophen should not take this medication. People with severe liver or kidney disease or a history of allergies or drug allergies should consult a doctor or pharmacist before using this medication. Pregnant women or those who may become pregnant should only take this medication when the benefits of treatment outweigh the risks, as its safety has not been fully established. If allergic symptoms such as hives, skin redness, or itching occur during treatment, the medication should be discontinued immediately. If liver function abnormalities occur, the use of this medication should be stopped, and gastrointestinal issues such as gastric disturbances or gastrointestinal bleeding may arise, so caution is warranted. Neuropsychiatric symptoms such as drowsiness, dizziness, headaches, fatigue, or excessive excitement may occur upon administration, so caution is advised when driving or operating machinery. The use of this medication along with alcohol or central nervous system depressants may intensify side effects, so it should be used carefully. This medication should be stored out of the reach of children and kept in a cool and dry place away from direct sunlight. Additionally, to maintain the quality of the medicine, it should not be transferred to another container.

Side effects and when to seek care immediately

Serious side effects

  • Angioedema, anaphylaxis symptoms (severe swelling, severe allergic reactions)
  • Liver function abnormalities (may include liver damage, jaundice symptoms)

Mild side effects

  • Hives, redness, itching, allergic skin rash, petechiae, ecchymosis, discoloration of urine, gastrointestinal disturbances, drowsiness, dizziness, headaches, lethargy, excessive excitement
  • Gastrointestinal bleeding (rarely possible)

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

Storage

This medication should be stored in a tightly sealed container to protect it from air and moisture. It is best to keep the storage temperature between 1 degree Celsius and 30 degrees Celsius.

Appearance and packaging

Appearance

Pale blue oval film-coated tablets

Package unit

10 tablets/PPT

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

No questions yet.

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.