| http://www.w3.org/ns/prov#value | - Could Rapaflo be used by a person using narcotic (opiate) pain medicine to pass a urine drug test for opiates? ## Even though Rapaflo (silodosin) is used to improve urination in men, the length of time following drug use for which a positive result may occur is dependent upon several factors including the frequency and amount of usage, metabolic rate, excretion rate, drug half-life, and the drug u
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