Which is more effective- rapaflo (silodosin) or flomax?

Equally effective: Though individual patients may notice differences in efficacy and tolerability between the two meds, the clinical studies leading to fda approval show similar results in improvement in both urinary symptoms and urinary flow. Excluding ejaculation changes, rapaflo (silodosin) 'may' have a quicker onset of action and a better side effect profile than flomax.