2. Summary of the blood pressure lowering efficacy of alpha blockers.

Alpha blocker	Lowest effective dose (mg/day)	Lowest dose with near maximal BP lowering (mg/day)	Near maximal trough SBP lowering	Near maximal trough DBP lowering	Trough SBP lowering (mm Hg), 95% CI	Trough DBP lowering (mm Hg), 95% CI
Bunazosin	Not estimable	Not estimable	Not estimable	Not estimable	Not estimable	Not estimable
Doxazosin	4	Not estimable	Not estimable	Not estimable	‐6.42 (‐10.12, ‐2.80)	‐3.53 (‐4.99, ‐2.07)
Prazosin	10	Not estimable	Not estimable	Not estimable	‐10.38 (‐16.21, ‐4.56)	‐6.90 (‐9.79, ‐4.01)
Terazosin	5	Not estimable	Not estimable	Not estimable	‐6.59 (‐10.22, ‐2.96)	‐4.40 (‐5.95, ‐2.84)