Contac Rhinitis Z
新コンタック鼻炎Z
Class 2 — Available at drug stores
Drug Type
Antihistamine
Form
Tablets
Indication
Alleviation of the following nasal allergy symptoms caused by pollen or house dust (indoor dust): sneezing, runny nose, and nasal congestion
Active Ingredients (per 1 tablet)
• Cetirizine hydrochloride (antihistamine) 10mg
Inactive Ingredients
Lactose, hydroxypropyl cellulose, hypromellose, macrogol, titanium oxide, magnesium stearate, cellulose, anhydrous silicic acid
Instructions for Use
- ✓Take with water or lukewarm water once daily at bedtime.
| Age | Dose per use | Times per day |
|---|---|---|
| Adults (15 years and older) | 1 tablet | Once daily (at bedtime) |
| Under 15 years | Do not use | — |
- ✕Do not take if you have had an allergic reaction to this product, any of its ingredients, or piperazine derivatives (including levocetirizine and hydroxyzine).
- ✕Do not take if you have kidney disease.
- ✕Do not use with other allergy medications (including medications for skin conditions or oral rhinitis medications), antihistamine-containing products (cold medicines, expectorants, motion sickness drugs, or sedatives), or medications containing theophylline, ritonavir, or pilsicainide hydrochloride hydrate.
- ✓After taking, do not drive or operate machinery (may cause drowsiness).
- ✕Do not take if you are breast-feeding, or stop breast-feeding if you take this medication.
- ✕Do not drink alcohol before or after taking this medication.
- ✓If any of the following occur after taking, stop immediately and consult a physician, pharmacist, or registered salesperson: fatigue, headache, dizziness, numbness, insomnia, depression, suicidal thoughts, agitation, hallucinations, or loss of consciousness; nausea, vomiting, loss of appetite, or swollen tongue; palpitations, elevated blood pressure, or irregular heartbeat; skin rash, redness, hives, swelling, or itching; blurred vision or eye redness; difficulty breathing or cough; frequent urination, blood in urine, or urinary incontinence; or tinnitus, chest pain, fever, or muscle pain.
- ✓Seek immediate medical attention if you experience skin itching, hives, hoarseness, difficulty breathing, palpitations, or loss of consciousness (possible anaphylactic shock); sudden muscle spasms (possible seizures); fever, jaundice, dark urine, or extreme fatigue (possible liver damage); or nosebleeds, bleeding gums, or unusual bruising (possible thrombocytopenia).
- ✓If dry mouth, constipation, diarrhea, or drowsiness persists or worsens, stop use and consult a physician, pharmacist, or registered salesperson.
- ⚠Consult a physician, pharmacist, or registered salesperson before use if you: are currently receiving medical treatment; have been diagnosed with liver disease or epilepsy; have a history of seizures; are pregnant or may be pregnant; are elderly; have had an allergic reaction to any drug; are unsure whether your symptoms are due to allergies or another cause; or have been diagnosed with bronchial asthma, atopic dermatitis, or other allergic conditions.
- ✓Seek immediate medical attention if any of the following serious symptoms appear:
- • Shock (anaphylaxis): Itching of skin, hives, hoarseness, sneezing, itchy throat, difficulty breathing, palpitations, or clouding of consciousness immediately after use.
- • Seizures: Sudden involuntary muscle contractions.
- • Liver disorder: Fever, itching, rash, jaundice (yellowing of the skin or whites of the eyes), dark urine, general fatigue, or loss of appetite.
- • Thrombocytopenia: Decreased platelet count causing nosebleed, bleeding gums, or bruising.
- ✓For seasonal allergies such as hay fever, most effective when taken from the onset of symptoms as pollen begins to scatter.
- ✓If symptoms do not improve after 1 week, or if taken for more than 2 weeks after symptoms improve, consult a physician, pharmacist, or registered salesperson.
- ✓When removing the tablet from the PTP sheet, press the convex side firmly to break the foil on the back. Do not swallow the PTP sheet.
Sources & Documents
- Japanese product page
- Japanese PDF
- Last verified: May 23, 2026
Related Medicines
Share this page:
For informational purposes only. Always consult a doctor or pharmacist before taking any medication.