Figure 6From: Effects of first and second generation antihistamines on muscarinic induced mucus gland cell ion transportThis figure shows the inhibition of histamine induced short circuit current (ΔIsc) by different antihistamines at various concentrations. These antihistamines concentration- dependently inhibited maximum responses induced by histamine, the order of apparent efficiencies of histamine blockade were desloratadine > cetirizine ≈ hydroxyzine > fexofenadine > loratadine.Back to article page