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Table 2 Antihistamines commonly used and indicated for the treatment of urticaria

From: Urticaria and angioedema

Second-generation H1-receptor antihistamines Standard adult dose (mg daily) 4 times standard adult dose (mg daily) Usual pediatric dose
Cetirizine (Reactine) 10–20 40 5–10 mL (1–2 teaspoons) daily (children’s formulation)
Desloratadine (Aerius) 5 20 2.5–5 mL (0.5–1.0 teaspoon) daily (children’s formulation)
Fexofenadine (Allegra) 120 480 Not currently indicated for children under 12 years of age
Loratadine (Claritin) 10 40 5–10 mL (1–2 teaspoons) daily (children’s formulation)
Bilastine (Blexten) 20 80 Not currently indicated for children under 12 years of age
Rupatadine (Rupall) 10 40 5–10 mL (1–2 teaspoons) daily (children’s formulation)