Histallay

Histallay is an oral tablet that contains the active ingredient fexofenadine hydrochloride, a second‑generation antihistamine marketed in the European Union. It is formulated for systemic absorption and is available without a prescription. The product belongs to the H1‑receptor antagonist class and is intended to relieve allergy‑related symptoms by blocking peripheral histamine activity, providing relief from nasal congestion, itchy eyes, and skin itching associated with seasonal and perennial allergies.

Histallay is indicated for the symptomatic treatment of several allergic conditions.

- Seasonal allergic rhinitis (hay fever) - Perennial allergic rhinitis - Chronic idiopathic urticaria (hives) - Eye itching and watering caused by allergic reactions - Nasal congestion and sneezing associated with allergy exposure

Like all medications, Histallay may cause unwanted effects, most of which are mild and reversible.

Common: - Headache - Dry mouth - Nausea - Fatigue

Serious: - Rare cardiac arrhythmia - Severe allergic reaction (anaphylaxis) - Elevated liver enzymes

Precautions help ensure safe use of Histallay, especially in specific health situations.

- Do not use if you have a known hypersensitivity to fexofenadine or other antihistamines. - Use with caution in patients with renal impairment; dose adjustment may be required. - The safety of Histallay during pregnancy or breastfeeding has not been established; consult a healthcare professional. - Do not exceed the recommended daily dose. - Alcohol may increase the risk of mild drowsiness in some individuals. - Keep the medication out of reach of children.

Histallay can interact with certain medicines and substances, influencing its effectiveness or safety.

Avoid: - Antacids containing aluminum or magnesium - Ketoconazole - Erythromycin - Ritonavir

Use with caution: - Other antihistamines (may increase additive effects) - Sedating central nervous system depressants - Theophylline - Certain antidepressants such as fluoxetine