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

Alfuzosin Hydrochloride to Promote Passage of Distal Ureteral Calculi