Medication info
Yuhan Cetirizine (Cetirizine Hydrochloride)

Yuhan Cetirizine (Cetirizine Hydrochloride)

OTC medicationTablet
Ingredient · strength
Cetirizine Hydrochloride›10mg / 1 tablet
Manufacturer / importer
(주)유한양행
Appearance
White, rectangular film-coated tablet
Packaging
10 tablets/box [10 tablets/PTP X 1], 30 tablets/box [10 tablets/PTP X 3]
Approval status
Active

MFDS item code 202203978 · Notified 2022.11.02

Summary

Main use
Improvement of allergic symptoms such as allergic rhinitis and conjunctivitis, chronic urticaria.
Who uses it
Adults · Children
Adult dosage
Adults and children over 6 years of age should take 10mg of cetirizine hydrochloride orally once a day before bedtime. For patients sensitive to side effects, it is advisable to administer 5mg in the morning and evening. For patients with kidney impairment, the dosing interval and amount should be adjusted based on the patient’s kidney function.
Children's dosage
Children over 6 years of age should take 10mg of cetirizine hydrochloride orally once a day before bedtime. For pediatric patients with renal impairment, the dosage should be adjusted individually based on renal clearance and weight.

Ingredients

Manufacturer
(주)유한양행

Efficacy & effects

Improvement of allergic symptoms such as allergic rhinitis and conjunctivitis, chronic urticaria.

  • Seasonal allergic rhinitis
  • perennial allergic rhinitis
  • allergic conjunctivitis
  • chronic idiopathic urticaria
  • skin itching
  • eczema
  • dermatitis
View approved original text

This medication is used for seasonal and perennial allergic rhinitis, allergic conjunctivitis, chronic idiopathic urticaria, and skin itching. It can also enhance the effect when used in combination with topical hydrocortisone in the treatment of eczema and dermatitis. It helps improve these symptoms.

Dosage and Administration

Adult dosage

Adults and children over 6 years of age should take 10mg of cetirizine hydrochloride orally once a day before bedtime. For patients sensitive to side effects, it is advisable to administer 5mg in the morning and evening. For patients with kidney impairment, the dosing interval and amount should be adjusted based on the patient’s kidney function.

Children's dosage

Children over 6 years of age should take 10mg of cetirizine hydrochloride orally once a day before bedtime. For pediatric patients with renal impairment, the dosage should be adjusted individually based on renal clearance and weight.

Precautions

Do not take this medication if you are allergic to any of its components or have hypersensitivity. Patients with severely impaired kidney function or children under 6 years of age should not use this medication. It contains lactose, so individuals with a genetic disorder that prevents the digestion of lactose should avoid taking it. During treatment with this medication, it is advisable not to combine it with certain drugs. For example, the combination with drugs such as theophylline or ritonavir can affect the medication’s effectiveness or concentration in the body. Also, taking this medication with alcohol can increase the risk of side effects, so it is safer to avoid alcohol. Patients with kidney or liver problems, elderly patients, epilepsy patients, or those at risk of seizures should consult a doctor or pharmacist before using this medication. Caution is also needed if you have conditions that cause difficulty urinating. Women who are pregnant or breastfeeding should consult a specialist before taking this medication, as it may affect the baby. In case of overdose, various symptoms such as confusion, drowsiness, dizziness, and rapid heartbeat may occur, and immediate medical attention is necessary. This medication may affect liver and kidney function, so if any abnormal symptoms occur, discontinue use and consult healthcare professionals. Caution is required when driving or operating machinery due to the possibility of drowsiness or impaired concentration. Finally, store this medication out of reach of children and keep it in its original container for safe use.

Side effects and when to seek care immediately

Serious side effects

Hives, severe swelling (edema), angioedema, hypersensitivity shock, severe rash with high fever, blisters, pain in the oral/eye mucosa, acute generalized exanthematous pustulosis, difficulty breathing or shortness of breath, asthma attacks, respiratory abnormalities accompanied by cough and fever, yellowing of the skin or eyes (jaundice), extreme lethargy, jaundice, hepatitis, sudden and severe headache, seizures, mental confusion, visual disturbances.

Mild side effects

  • Confusion
  • diarrhea
  • dizziness
  • fatigue
  • headache
  • lethargy
  • pupil dilation
  • itching
  • restlessness
  • sedation
Show 28 more
  • drowsiness
  • stupor
  • rapid heartbeat
  • tremors
  • urinary retention
  • drowsiness
  • headache
  • occasional lethargy
  • numbness
  • weakness
  • restlessness
  • sensory abnormalities
  • rarely mild and transient drowsiness
  • fatigue
  • dizziness
  • heaviness of the head
  • agitation
  • convulsions
  • abnormal movements
  • muscle tone abnormalities
  • fainting
  • tremors
  • aggression
  • confusion
  • depression
  • hallucinations
  • insomnia
  • tic disorders.

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

Interactions

Drug interactions

Do not take this medication in conjunction with theophylline or ritonavir.

Food interactions

Do not take this medication with an excessive amount of alcohol.

Storage

Store this medication in a sealed container to protect it from air and moisture. Avoid extremely hot or cold places; it is recommended to store it at room temperature between 1 to 30 degrees Celsius.

Appearance and packaging

Appearance

White, rectangular film-coated tablet

Package unit

10 tablets/box [10 tablets/PTP X 1], 30 tablets/box [10 tablets/PTP X 3]

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

  • QWill it make me drowsy? Can I take it before going to work?

    Drowsiness is the first adverse reaction listed in the instructions, and adults and children aged 6 years and older are advised to take 10mg once a day before bedtime. It is best to take it as directed before bedtime rather than before going to work, and do not consume it with excessive amounts of alcohol.

    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.