Stonarhini Gel Z
ストナリニZジェル
Class 2 — Available at drug stores
Drug Type
Antihistamine
Form
Soft capsules
Indication
Alleviates the following nasal allergy symptoms caused by pollen or house dust: sneezing, runny nose, nasal congestion
Active Ingredients (per 1 capsule)
• Cetirizine hydrochloride (antihistamine) 10mg
Inactive Ingredients
Macrogol, potassium hydroxide, gelatin, succinated gelatin, glycerin, sugar alcohol derived from corn starch, ferric trioxide
Instructions for Use
- ✓Take before bedtime.
| Age | Dose per use | Times per day |
|---|---|---|
| Adults (15 years and older) | 1 capsule | Once daily |
| Under 15 years | Do not use | — |
- ✕Do not take if you have had an allergic reaction to this product, 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 medication), internal medication containing antihistamines (cold medicine, cough suppressant-expectorants, motion sickness drugs, sedatives), or medication containing theophylline, ritonavir, or pilsicainide hydrochloride hydrate.
- ✓After taking this drug, do not drive or operate machinery (may cause drowsiness).
- ✕Do not drink alcohol before or after taking this medication.
- ✕Do not take if you are breast-feeding, or stop breast-feeding if you take this medication.
- ⚠Consult a physician, pharmacist, or registered salesperson before use if: you are receiving treatment from a physician; you have liver disease or epilepsy; you have a history of seizures; you are pregnant or may be pregnant; you are elderly; you have a history of allergic reactions to drugs; it is unclear whether your symptoms are due to allergies or another cause; or you 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.
- ✓Take before bedtime.
- ✓For seasonal allergies such as hay fever, this medication is most effective when taken at the onset of symptoms.
- ✓If symptoms do not improve after 1 week, or when taking for more than 2 weeks, consult a physician, pharmacist, or registered salesperson.
- ✓When removing capsules from the PTP sheet, push the convex side to break the foil on the back. Do not swallow the PTP sheet itself.
Sources & Documents
- Japanese product page
- English PDF
- Japanese PDF
- Last verified: May 23, 2026
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For informational purposes only. Always consult a doctor or pharmacist before taking any medication.