Allegra (Fexofenadine HCl)
Also sold as: Allegra, Fexova, Histafree, Telfast
Pregnancy
Cat C
Lactation
Caution
Schedule
OTC
Forms
Tablet 30/60/120/180mg +1
Indications
- Allergic rhinitis
- Chronic urticaria
Adult Dosing
AR/CU
120 mg PO OD or 60 mg BD
Pediatric Dosing
Age Range: >2 years
Dose: 2-11y: 30 mg BD; ≥12y: 120 mg OD
Renal Dose Adjustment
| CrCl / eGFR | Dose Adjustment |
|---|---|
| CrCl > 80 | Standard |
| CrCl < 80 | Reduce to half dose |
Pregnancy & Lactation
Pregnancy: Category C
Lactation: Caution
Top Drug Interactions
| Interacting Drug | Effect | Severity |
|---|---|---|
| Antacids (Mg/Al) | Reduced absorption — separate by 2h | Moderate |
| Erythromycin, ketoconazole | Increased fexofenadine levels (modest) | Minor |
| Fruit juices (apple, orange, grapefruit) | Reduced absorption ~30% | Moderate |
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Side Effects
Common
- Headache
- Drowsiness (rare; truly non-sedating among 2nd gen)
- Nausea
Serious / Discontinue If
- Hypersensitivity (rare)
Contraindications
- Hypersensitivity
Available Indian Brands
| Brand | Manufacturer | Price (approx) |
|---|---|---|
| Allegra 120 | Sanofi | 10 tab ₹185 |
| Fexova 120 | Cipla | 10 tab ₹85 |
| Histafree 120 | Mankind | 10 tab ₹65 |
Patient Counseling Points
- Take on empty stomach for best absorption
- Avoid fruit juices around dose time
- Truly non-sedating — safe for daytime
Stop Googling drug references mid-consultation
EasyClinic auto-flags Allegra interactions, renal cutoffs, and pregnancy warnings the moment you write the prescription. Built-in safety net for every Indian doctor.
References
- BNF
- Lexicomp
- Indian National Formulary
- Specialty society guidelines
Disclaimer: This information is for clinical reference only. It is not exhaustive and does not substitute clinical judgement. Always verify current dosing against the manufacturer's prescribing information and current treatment guidelines. Drug prices are approximate and may vary.