Alfuzosin Hydrochloride to Promote Passage of Distal Ureteral Calculi

Inclusion Criteria: * Age =\>18 * \<8mm ureteral calculus below the pelvic brim identified by non-contrast CT scan and/or intravenous pyelogram Exclusion Criteria: * Subject with know hypersensitivity to Alfuzosin hydrochloride or any component of Alfuzosin hydrochloride tablets * Pregnant/Nursing females * Solitary kidney * Renal insufficiency (Creatinine\>1.8) * Urinary infection (fever \>101, positive urine culture, many bacteria on urinalysis) * Moderate or severe hepatic insufficiency (Childs-Pugh categories B and C) * Potent CYP3A4 inhibitors such as ketoconazole, itraconazole, and ritonavir, since Alfuzosin blood levels are increased * Other alpha-blockers * Phosphodiesterase type 5 inhibitors for erectile dysfunction * Any subject for whom the principal investigator feels it would not be in his or her best interest to participate in the study