Antihistaminic activity of adrenergic beta-receptors blocking drugs.
D000818:Animals; D006168:Guinea Pigs; D006634:Histamine H1 Antagonists / Q000494:pharmacology*; D007082:Ileum / Q000187:drug effects; D009119:Muscle Contraction / Q000187:drug effects; D013565:Sympatholytics / Q000494:pharmacology*
D006634:Histamine H1 Antagonists; D013565:Sympatholytics