Medication info

Wien Tac Double Action Suspension

OTC medicationSuspension경구
Ingredient · strength
Sodium Alginate›5g / 100mLSodium Bicarbonate›2.13g / 100mLCalcium Carbonate›3.25g / 100mL
Manufacturer / importer
구주제약(주)
Appearance
A pale yellow to cream-colored suspension with a peppermint flavor
Packaging
4 packets (10 mL each)
Approval status
Active

MFDS item code 201901968 · Notified 2019.04.01

Summary

Main use
Improvement of symptoms of gastroesophageal reflux (acid reflux, heartburn)
Who takes it
Adults · Children
Adult dose
Take 10 to 20 mL four times a day (after meals and before bedtime).
Child dose
Children 12 years and older should take 10 to 20 mL four times a day (after meals and before bedtime) like adults.

Ingredients

Manufacturer
구주제약(주)

Efficacy & effects

Improvement of symptoms of gastroesophageal reflux (acid reflux, heartburn)

  • Acid reflux
  • heartburn
  • dyspepsia due to the backward flow of stomach contents
View approved original text

This medication alleviates symptoms such as acid reflux and heartburn and is also effective for dyspepsia caused by the backward flow of stomach contents. It is especially used to improve symptoms after meals, during pregnancy, or in cases accompanied by gastroesophageal reflux disease. This helps to reduce the discomfort patients experience in their daily lives and aids in maintaining gastric health.

How to take

Adult dose

Take 10 to 20 mL four times a day (after meals and before bedtime).

Child dose

Children 12 years and older should take 10 to 20 mL four times a day (after meals and before bedtime) like adults.

Precautions

This medication should not be taken by anyone who has an allergic reaction to this drug or its ingredients. Individuals with poor heart function or kidney problems who need to restrict sodium intake must consult a doctor or pharmacist before taking this medication, as it contains sodium. Additionally, anyone with high calcium levels in the blood or conditions where calcium accumulates in the kidneys should also discuss it with a professional before taking this medication, as it contains calcium. Children under 12 years old should only take this medication if directed by a physician. If you experience itching, difficulty breathing, or severe allergic reactions while taking this medication, stop taking it immediately and consult your doctor or pharmacist. Also, taking too much of this medication may lead to increased calcium levels in the blood or symptoms such as digestive disorders and constipation, so it is essential to adhere to the recommended dose. If symptoms do not improve after a week of taking this medication, be sure to consult a professional. In case of overdose, seek immediate medical attention, and some patients may experience abdominal bloating. This medication includes antacid components, which may interact with other medications, so it is safer to take this medication at least 2 hours apart from other drugs. Pregnant women can take this medication without special adverse reactions, but it is advisable to consult a doctor before taking it. This medication should be kept out of the reach of children and stored tightly closed in its original container. It should also be used within 6 months after opening. Lastly, this medication contains saccharin as a sweetener, which has been reported to have carcinogenic potential in animal studies, so long-term excessive use should be avoided.

Side effects and when to seek care immediately

Serious side effects

Anaphylactic reaction

Mild side effects

  • Itching
  • bronchoconstriction
  • alkalosis
  • hypercalcemia
  • acid rebound
  • milk-alkali syndrome
  • constipation
  • abdominal bloating

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

Interactions

Drug interactions

This medication may interact with tetracycline, digoxin, fluoroquinolones, iron salts, ketoconazole, neuroleptics, levothyroxine, penicillamine, beta-blockers (atenolol, metoprolol, propranolol), glucocorticoids, chloroquine, estramustine, and diphosphonates, so consult a doctor or pharmacist before taking it with these drugs.

Storage

This medication is sensitive to light and should be stored in a light-protected, closed container. The storage temperature should be maintained at room temperature between 1 degree and 30 degrees Celsius, and refrigeration should be avoided.

Appearance and packaging

Appearance

A pale yellow to cream-colored suspension with a peppermint flavor

Package unit

4 packets (10 mL each)

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 am curious if it's safe to take this for heartburn during pregnancy.

    The efficacy includes improvement in dyspepsia due to reflux of stomach contents after meals or during pregnancy. However, since you need to consider interactions with other medications taken during pregnancy, please consult with your physician or pharmacist before taking it.

    Answers 1 · 2026.09.14

  • QCan I store it in the refrigerator?

    According to the product information, this medication should not be stored in the refrigerator. It should be kept in a light-protecting, airtight container at room temperature (1-30℃).

    Answers 1 · 2026.09.14

  • QShould I take it before bed as well?

    Adults and children aged 12 and older should take 10-20 mL four times a day after meals and before bedtime. If reflux symptoms continue to repeat, please seek medical attention to determine the cause.

    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.