Although additional well design ed , worldwide , placebo-controlled and r and omized studies are necessary to confirm the long-term outcomes of naftopidil pharmacotherapy , current data suggest that naftopidil administration in BPH patients provides comparable improvements in total IPSS , QoL , and urinary symptoms from baseline relative to 0.2 mg/d tamsulosin and 8 mg/d silodosin .
However , improvements in Qmax are generally less with naftopidil than with tamsulosin .
Reported adverse effects related to naftopidil administration are negligible and usually mild .
OBJECTIVES The aim of the study was to systematic ally review the effects of the adrenoreceptor A1D antagonist naftopidil in the management of  lower urinary tract symptoms ( LUTS ) .
Comparison of 25 and 75 mg/day naftopidil for lower urinary tract symptoms associated with benign prostatic hyperplasia: a prospective, randomized controlled study.
BACKGROUND The present study investigated the efficacy , safety , and utility of starting an alpha(1d)-selective antagonist , naftopidil , at 75 or 25 mg/day in patients with lower urinary tract symptoms ( LUTS ) associated with benign prostatic hyperplasia ( BPH ) . METHODS In this prospect i ve comparative study , the subjects comprised 153 patients with LUTS associated with BPH . Patients were r and omized to receive either 25 mg/day ( Group LD ) or 75 mg/day ( Group HD ) of naftopidil for 4 weeks . The lower urinary tract disease symptom score ( LUTDSS ) , the International Prostate Symptom Score ( IPSS ) , the Quality of life assessment index , the maximum flow rate ( Q(max ) ) , and the residual urine volume were compared between the groups . RESULTS In both groups , the LUTDSS and the IPSS were significantly improved at the endpoint and no significant intergroup differences were identified . However , the improvement in the Q(max ) was significantly better for Group HD than for Group LD . The overall efficacy did not differ significantly between the groups . The degree of improvement in voiding symptoms and LUTDSS among patients with moderate symptoms was significantly greater for Group HD than for Group LD . The frequency of adverse reactions did not differ significantly between the groups . CONCLUSIONS Starting administration at 75 mg/day rather than 25mg/day is helpful for LUTS associated with BPH for patients with moderate symptoms , particularly in improving voiding symptoms . The 75 mg/day administration was considered to be a recommendable therapeutic dose in some patients
Although additional well design ed , worldwide , placebo-controlled and r and omized studies are necessary to confirm the long-term outcomes of naftopidil pharmacotherapy , current data suggest that naftopidil administration in BPH patients provides comparable improvements in total IPSS , QoL , and urinary symptoms from baseline relative to 0.2 mg/d tamsulosin and 8 mg/d silodosin .
However , improvements in Qmax are generally less with naftopidil than with tamsulosin .
Reported adverse effects related to naftopidil administration are negligible and usually mild .
OBJECTIVES The aim of the study was to systematic ally review the effects of the adrenoreceptor A1D antagonist naftopidil in the management of  lower urinary tract symptoms ( LUTS ) .