Which of the following is an Alpha la adrenergic blocker which give symptomatic relief in BPH?
Tamsulosin
Prazosin
Oxazocin
Dolazoline
Alpha 1A receptor is predominantly found in bladder base and prostate. Tamsulosin is a uroselective alpha1 blocker effective for symptomatic relief in BPH. Prazosin is a highly selective alpha 1 blocker having alpha1: alpha 2 selectivity ratio 1000:1. It blocks alpha 1 receptors in bladder trigone and prostate and improves urine flow and reduces residual urine in bladder in a case of BPH.