Nefoxef (Fexofenadine Hydrochloride)

Fexofenadine, the active ingredient in Nefoxef, is a second‑generation H1 antihistamine presented as an oral tablet for oral use. It is used to relieve symptoms of allergic rhinitis and chronic idiopathic urticaria in adults and adolescents. GNH USA supplies Nefoxef as a licensed, GDP‑compliant international pharmaceutical supplier serving hospitals, pharmacies and clinics worldwide.

Nefoxef, a second‑generation H1 antihistamine, is indicated for allergic conditions affecting the nasal passages and skin. - Allergic rhinitis: reduces sneezing, nasal congestion, itching and watery discharge. - Seasonal allergic rhinitis: alleviates symptoms triggered by pollen or outdoor allergens. - Chronic idiopathic urticaria: diminishes hives and associated itching.

Fexofenadine is generally well tolerated, but adverse reactions can occur.

Common Side Effects: - Headache: mild to moderate pain often reported during early treatment. - Dry mouth: sensation of reduced salivation. - Nausea: occasional stomach upset. - Fatigue: feeling of tiredness without exertion. - Dizziness: transient light‑headedness.

Serious or Rare Side Effects: - Anaphylaxis: severe allergic reaction requiring immediate medical attention. - Angioedema: swelling of face, lips, tongue or throat. - Cardiac arrhythmia: irregular heart rhythm, reported rarely. - Severe skin reactions: such as Stevens‑Johnson syndrome or toxic epidermal necrolysis. - Hepatotoxicity: abnormal liver function tests in rare cases.

Before initiating therapy, consider patient‑specific factors and safety measures. - Renal impairment: assess kidney function and adjust dose if necessary. - Hepatic disease: monitor liver enzymes in patients with liver dysfunction. - Concomitant use with ketoconazole or erythromycin: avoid due to increased plasma levels. - Pregnancy: discuss potential risks with a healthcare professional. - Breastfeeding: evaluate benefits versus potential infant exposure. - Store at room temperature: keep in the original container, protect from moisture and heat.

Fexofenadine may interact with other medicines, affecting its absorption or plasma concentration.

Major Interactions (Avoid): - Ketoconazole: can markedly increase fexofenadine levels. - Erythromycin: may raise systemic exposure. - Ritonavir: strong CYP3A4 inhibitor that elevates concentrations.

Moderate Interactions (Monitor Closely): - Antacids containing aluminum or magnesium: reduce absorption; separate administration by at least 2 hours. - Fruit juices (grapefruit, orange, apple): may decrease bioavailability; advise spacing doses.