1 the effects of atenolol ( 100 mg ) , a cardioselective beta-adrenoceptor blocking agent , and labetalol ( 300 mg ) , a combined alpha- and non-selective beta-adrenoceptor blocking agent given in single doses were examined in a double-blind placebo controlled study in 11 asthmatic patients with hypertension .
C0004147
atenolol
C0020538
hypertension