Medication info
Myrex Tablets

Myrex Tablets

OTC medicationTablet경구
Ingredient · strength
Magnesium Lactate Hydrate›470mg / 1 tabletPyridoxine Hydrochloride›5mg / 1 tablet
Manufacturer / importer
태극제약(주)
Appearance
Pale yellow, rectangular enteric-coated tablet
Packaging
300 tablets/bottle
Approval status
Active

MFDS item code 200600233 · Notified 2006.02.23

Summary

Main use
Relief of muscle cramps due to magnesium deficiency
Who takes it
Adults
Adult dose
Magnesium deficiency: 2 tablets once, 3 times a day, taken with plenty of water during meals.

Ingredients

Manufacturer
태극제약(주)

Efficacy & effects

Relief of muscle cramps due to magnesium deficiency

  • Magnesium deficiency
  • muscle cramps
View approved original text

This medication is used to relieve muscle cramps caused by magnesium deficiency.

How to take

Adult dose

Magnesium deficiency: 2 tablets once, 3 times a day, taken with plenty of water during meals.

Precautions

This medication should not be used by patients with severely impaired kidney function. Patients taking a drug called Quinidine should also not take this medication. People who have an allergic reaction to this medication or any of its components should not use it. This medication should not be given to babies under 12 months old. It contains lactose, so patients with a genetic inability to digest lactose should not take it. During treatment, it is advisable to avoid taking medications that contain phosphates or calcium, oral tetracycline antibiotics, antacids, or levodopa. While taking this medication, it is advisable to avoid teas containing tannins, such as green tea or black tea, and dairy products and milk. Patients receiving treatment from a physician, those with heart or circulatory issues, patients with slightly impaired kidney function, patients with protein deficiency, and pregnant or breastfeeding women should consult a professional before taking this medication. In addition, long-term use of high doses of Pyridoxine can cause neurological issues, so caution is required. In case of overdose, symptoms may include nausea, vomiting, increased sodium concentration in the blood, heart function decline, edema, and urine retention. Since there is a risk of hyperkalemia, those taking certain diuretics should be particularly careful. If symptoms such as skin rash, abdominal pain, diarrhea, irregular heartbeat, or central nervous system function decline occur, or if symptoms do not improve after a month of taking, one should immediately discontinue use and consult a professional. In cases of severe calcium deficiency, magnesium should be ingested first, and if necessary, intravenous therapy should be carried out. This medication must be taken as per the prescribed method and dosage. When storing, keep it out of reach of children, avoid direct sunlight, and store it in a cool, dry place with the lid tightly closed. To maintain quality, do not transfer into another container, and avoid misuse.

Side effects and when to seek care immediately

Serious side effects

Erythema

Mild side effects

  • Nausea
  • vomiting
  • gastrointestinal symptoms
  • hypernatremia
  • congestive heart failure
  • edema
  • anuria
  • abdominal pain
  • diarrhea
  • insufficient contraction
Show 1 more
  • central nervous system function decline

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

Interactions

Drug interactions

This medication should not be taken with Quinidine, phosphates, calcium salts, oral tetracycline preparations, antacids, or levodopa. Additionally, those taking aldosterone antagonists or Triamterene should consult with their physician or pharmacist.

Food interactions

This medication should be avoided when taking with or around the time of consumption of teas containing tannins, such as green tea or black tea.

Storage

This medication should be stored in a sealed container to prevent air or moisture from entering and kept at room temperature between 1 to 30 degrees Celsius. Storing it this way will help maintain its effectiveness over time.

Appearance and packaging

Appearance

Pale yellow, rectangular enteric-coated tablet

Package unit

300 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

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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.