Allergic rhinitis or chronic idiopathic urticaria, seasonal allergic rhinitis. Inhibition of histamine-induced wheal & flare reactions of the skin due to allergens or medications.
Histamine-induced wheal & flare 10 mg/day. Pruritus 10 mg/day. Severe pruritus Initially, 20 mg/day. Reduce to 10 mg/day upon improvement of itching. Allergic rhinitis or chronic idiopathic urticaria 10 mg as a single daily dose. Seasonal allergic rhinitis 20 mg/day.