The protective influence of graded doses of Promethazine on induced asthmatic attacks of graded intensity.
D018926:Anti-Allergic Agents; D001249:Asthma; D006634:Histamine H1 Antagonists / Q000494:pharmacology*; D011398:Promethazine
D018926:Anti-Allergic Agents; D006634:Histamine H1 Antagonists; D011398:Promethazine
ANTIHISTAMINICS/effects; ASTHMA/experimental