Allegra FX
アレグラFX
Class 2 — Available at drug stores
Drug Type
Antihistamine (non-drowsy)
Form
Tablets 28 tablets
Indication
Relief of the following nasal allergy symptoms caused by pollen, house dust, and other allergens: sneezing, runny nose, and nasal congestion
Active Ingredients (per daily dose (2 tablets))
• Fexofenadine hydrochloride 120mg
Inactive Ingredients
Crystalline cellulose, partly pregelatinized starch, croscarmellose sodium, magnesium stearate, light anhydrous silicic acid, hypromellose, povidone, titanium oxide, macrogol 400, iron sesquioxide, yellow iron sesquioxide
Instructions for Use
| Age | Dose per use | Times per day |
|---|---|---|
| Adults (15 years and older) | 1 tablet | Twice daily (morning and evening) |
| Under 15 years | Do not use | — |
- ✕Do not take if you have had an allergic reaction to this product or any of its ingredients.
- ✕Do not use with other allergy medications (including medications for skin conditions or nasal symptoms), antihistamine-containing medications (cold medicines, antitussive-expectorant medications, motion sickness medications, sleep aids), antacids containing aluminum hydroxide or magnesium hydroxide, erythromycin, or apalutamide.
- ✕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; it is unclear whether your symptoms are due to allergic rhinitis or another cause such as a cold; you have been diagnosed with asthma, atopic dermatitis, or other allergic conditions; you have severe nasal congestion; you are pregnant or may be pregnant; you are elderly; or you have a history of allergic reactions to drugs.
- ✓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.
- • Liver disorder: Fever, itching, rash, jaundice (yellowing of the skin or whites of the eyes), dark urine, general fatigue, or loss of appetite.
- • Agranulocytosis / leukopenia / neutropenia: Sudden high fever, chills, or sore throat.
- ✓Take 1 tablet twice daily (morning and evening) with cold or lukewarm water. This medication may be taken on an empty stomach.
- ✓For seasonal allergies such as hay fever, start taking from the predicted start of the pollen season, or as soon as symptoms begin.
- ✓Continuous daily use is effective.
- ✓If symptoms do not improve after 1 week, consult a physician, pharmacist, or registered salesperson. Do not use for more than 2 weeks without consulting a physician.
- ✕Children under 15 years of age must not take this medication.
Video Guide
Watch: How to Use Allegra FXSources & Documents
- Japanese product page
- 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.