in a double-blind , randomized , crossover study , the h1-receptor antagonists , terfenadine and chlorpheniramine , were investigated in eight healthy , fasting female subjects , aged 67.8 +/- sd 0.8 years , who ingested single doses of terfenadine , 1 mg/kg ( mean dose , 69.6 +/- 11.2 mg ) , and chlorpheniramine , 0.12 mg/kg ( mean dose , 8.4 +/- 1.3 mg ) .
C2757048
h1-receptor antagonists
C0008281
chlorpheniramine