Medication info

Gururex Tablet (Chlorzoxazone)

OTC medicationApproval withdrawn
Ingredient · strength
Chlorzoxazone›Strength being verified
Manufacturer / importer
(주)시어스제약
Appearance
White round tablet
Packaging
10 tablets/PTP
Approval status
Approval withdrawn

MFDS item code 202104670 · Notified 2021.06.17

This product's status changed to Approval withdrawn on 2023.09.11. It may no longer be sold, so consult a doctor or pharmacist before taking it.

Summary

Main use
Relief of musculoskeletal pain and spasms (lumbar pain, cervical radiculopathy, etc.)
Who uses it
Adults
Adult dosage
Adults: 200-400 mg of chlorzoxazone orally 3-4 times a day. Adjust dosage appropriately based on age and symptoms.

Ingredients

Manufacturer
(주)시어스제약

Efficacy & effects

Relief of musculoskeletal pain and spasms (lumbar pain, cervical radiculopathy, etc.)

  • Pain accompanying musculoskeletal disorders
  • painful spasms
  • lumbar pain
  • back pain
  • cervical radiculopathy
  • neck-shoulder-arm syndrome
  • periarthritis of the shoulder
  • degenerative spine disease
View approved original text

This medication is used to relieve pain and muscle spasms associated with musculoskeletal disorders. For example, it is effective for conditions such as lower back pain, pain in the neck and shoulders, cervical radiculopathy, periarthritis of the shoulder, and degenerative spine disease. By improving these symptoms, it helps patients to feel more comfortable in their daily life. Therefore, it is used to relieve musculoskeletal pain and contractions.

Dosage and Administration

Adult dosage

Adults: 200-400 mg of chlorzoxazone orally 3-4 times a day. Adjust dosage appropriately based on age and symptoms.

Precautions

This medication can rarely cause serious liver damage. If abnormalities in liver function occur, symptoms such as fever, rash, loss of appetite, nausea, vomiting, fatigue, headache, changes in urine color, and jaundice may appear, and in such cases, the medication should be discontinued immediately and a doctor consulted. Patients with liver disease must consult a physician before taking this medication. Patients with allergic reactions or intolerance to this medication should not take it. It also contains lactose, so patients with lactose intolerance should not use this medication. Patients with weak liver or kidney function, and those with a history of drug allergies should use this medication cautiously. If symptoms of hypersensitivity such as rash, itching, or hives occur during use, the medication should be discontinued. If drowsiness, dizziness, staggering, lethargy, or hypersensitivity occurs, the dosage may be reduced or the medication may be discontinued. Liver dysfunction may rarely occur, so immediate consultation with a doctor is necessary if abnormal symptoms develop. Gastrointestinal symptoms may include nausea, vomiting, heartburn, stomach discomfort, diarrhea, constipation, and epigastric pain, and rarely gastrointestinal bleeding may occur. Allergic skin rashes or bleeding, angioedema, and severe allergic reactions (anaphylaxis) may occur, so caution is advised. Additionally, some ingredients in this medication may cause changes in urine color. This medication may cause drowsiness or decreased concentration, so driving or operating hazardous machinery should be avoided during use. Interaction may be enhanced when taken with certain medications or alcohol, so it is best to avoid taking it with phenothiazine medications, central nervous system depressants, or MAO inhibitors. If it must be taken together, caution such as reducing the dosage should be exercised. Women who are pregnant or may become pregnant should carefully consider taking this medication, and breastfeeding mothers should discontinue nursing. Safety for children has not been established, so this medication should only be used when the benefits outweigh the risks.

Side effects and when to seek care immediately

Serious side effects

  • Hives
  • liver dysfunction
  • angioedema
  • anaphylactic reaction
  • allergic reactions (rash, itching)
  • gastrointestinal bleeding

Mild side effects

  • Fever
  • rash
  • loss of appetite
  • nausea
  • vomiting
  • fatigue
  • headache
  • dark urine
  • drowsiness
  • dizziness
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  • staggering
  • lethargy
  • hypersensitivity
  • heartburn
  • stomach discomfort
  • diarrhea
  • constipation
  • epigastric pain
  • stomach pain
  • changes in urine color
  • decreased attention
  • concentration
  • and reflexes.

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

Storage

This medication should be stored in a tightly sealed container to avoid exposure to air or moisture. It is important to maintain storage temperature between 1°C and 30°C.

Appearance and packaging

Appearance

White round tablet

Package unit

10 tablets/PTP

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

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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.