Medication info

Rugientok Liquid (Cetirizine Hydrochloride)

OTC medicationSolution경구
Ingredient · strength
Cetirizine Hydrochloride›100mg / 100mL
Manufacturer / importer
대원제약(주), 대원바이오텍주식회사
Appearance
A light yellow liquid contained in an aluminum foil pouch
Packaging
10 packets/box [5ml/packet]
Approval status
Active

MFDS item code 202400028 · Notified 2024.01.04

Summary

Main use
Relief of symptoms associated with allergic rhinitis and conjunctivitis (nasal inflammation, conjunctivitis) and chronic urticaria.
Who takes it
Adults · Children
Adult dose
Adults and children over the age of 12 should take 10mg of cetirizine hydrochloride orally once daily. For patients sensitive to adverse reactions, it may be divided into morning and evening doses. Dosage may be appropriately adjusted according to age and symptoms. In cases of renal impairment, dosage and intervals should be adjusted according to creatinine clearance. - Normal (≥80 mL/min): 10mg once daily - Mild (50-79 mL/min): 10mg once daily
Child dose
For children aged 2-12 years: - Weighing 30kg or more: administer 10mg once daily - Weighing less than 30kg: administer 5mg once daily Dosage for children with renal impairment should be adjusted based on clearance rate and weight individually.

Ingredients

Manufacturer
대원제약(주)
Manufacturer
대원바이오텍주식회사

Efficacy & effects

Relief of symptoms associated with allergic rhinitis and conjunctivitis (nasal inflammation, conjunctivitis) and chronic urticaria.

  • Seasonal allergic rhinitis
  • perennial allergic rhinitis
  • allergic conjunctivitis
  • chronic idiopathic urticaria
  • skin pruritus
View approved original text

This medication is used to relieve symptoms caused by allergic reactions such as seasonal and perennial allergic rhinitis and allergic conjunctivitis. It is also effective for chronic idiopathic urticaria and pruritus associated with skin itching. By improving these symptoms, it reduces the discomfort in patients' daily lives. It is used to treat various symptoms caused by allergies.

How to take

Adult dose

Adults and children over the age of 12 should take 10mg of cetirizine hydrochloride orally once daily. For patients sensitive to adverse reactions, it may be divided into morning and evening doses. Dosage may be appropriately adjusted according to age and symptoms. In cases of renal impairment, dosage and intervals should be adjusted according to creatinine clearance. - Normal (≥80 mL/min): 10mg once daily - Mild (50-79 mL/min): 10mg once daily

Child dose

For children aged 2-12 years: - Weighing 30kg or more: administer 10mg once daily - Weighing less than 30kg: administer 5mg once daily Dosage for children with renal impairment should be adjusted based on clearance rate and weight individually.

Precautions

This medication should not be taken by those who are allergic to any specific ingredients or have a history of hypersensitivity. It is also not safe for patients with severely impaired kidney function, children under the age of 2, or women who are pregnant or breastfeeding. Additionally, those with fructose intolerance should not take this medication. During treatment, this medication should not be used with certain drugs, such as theophylline or ritonavir, as it may alter the efficacy or concentration levels of the drugs in the body. It is recommended to stop breastfeeding while taking this medication and to avoid consuming alcohol at the same time. Patients with kidney or liver problems, the elderly, epilepsy patients, or those with urination difficulties should consult with healthcare professionals before using this medication. In case of overdose, symptoms such as confusion, drowsiness, tremors, and difficulty urinating may occur, so immediate consultation with a healthcare professional is advisable if any of these symptoms appear. While taking this medication, side effects such as drowsiness, headaches, indigestion, skin rashes, or liver function abnormalities may occur, so if such symptoms arise, careful observation is necessary, and discontinuation and consultation with a professional should be followed if required. It is advisable not to take this medication a few days prior to allergy testing, and caution should be exercised when driving or operating machinery. Taking this medication with food may slightly slow the absorption rate but does not alter the actual amount absorbed. Finally, this medication should be stored out of reach of children, used within 3 months after opening, and kept in its original container.

Side effects and when to seek care immediately

Serious side effects

Urticaria, severe swelling (edema), hypersensitivity shock, angioedema, fixed drug rash, acute generalized exanthematous pustulosis, jaundice, liver dysfunction, hepatitis, renal abnormalities, urinary disturbances, paralysis, seizures, severe allergic reactions, severe skin adverse reactions, respiratory problems, liver issues (jaundice), severe neurological symptoms, severe swelling or urinary disturbances.

Mild side effects

  • Confusion
  • diarrhea
  • dizziness
  • fatigue
  • headache
  • lethargy
  • pupil dilation
  • itching
  • anxiety
  • sedation
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  • drowsiness
  • lethargy
  • rapid heartbeat
  • tremors
  • urinary retention
  • somnolence
  • occasional fatigue
  • numbness
  • weakness
  • anxiety
  • sensory disturbances
  • rarely mild and transient drowsiness
  • heaviness in the head
  • excitement
  • convulsions
  • motor disturbances
  • muscle rigidity
  • syncope
  • aggressiveness
  • depression
  • hallucinations
  • insomnia
  • tic disorders
  • amnesia
  • cognitive impairment
  • suicidal thoughts
  • nightmares

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

Interactions

Drug interactions

This medication should not be taken with theophylline or ritonavir.

Food interactions

This medication should not be taken with excessive alcohol.

Storage

This medication is sensitive to light, so it should be stored in a container that shields it from light. Additionally, it is best to store the medication at a temperature between 1°C and 30°C. This will help maintain the medication's effectiveness.

Appearance and packaging

Appearance

A light yellow liquid contained in an aluminum foil pouch

Package unit

10 packets/box [5ml/packet]

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 feel itchier after stopping the medication.

    The product insert states that itching or hives may occur after stopping this medication. If the symptoms are uncomfortable or persist, please consult a doctor or pharmacist.

    Answers 1 · 2026.09.14

  • QI am currently taking theophylline for asthma, is it okay?

    The approval information states that this medication should not be taken with theophylline. If you are undergoing treatment for asthma, do not change your prescribed medications arbitrarily, and consult your prescribing doctor or pharmacist before 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.