A new drug for benign prostatic hyperplasia is used for 9 months to determine its long-term safety.

This will be a multi-center, open-label 40 week investigation in up to 1,200 men with signs and symptoms of benign prostatic hyperplasia. The following procedures are utilized: physical exams, electrocardiograms, clinical laboratory tests, vital signs, the International Prostate Symptom Score, maximum urine flow rate, adverse events, concomitant medications, and compliance.

All subjects had previously participated in a 12-week double-blind placebo controlled trial (NCT000224107 or NCT000224120)

Inclusion Criteria:

• Males in good general health and at least 50 years of age, who have completed SI04009 or SI04010.

Exclusion Criteria:

• Medical conditions that would confound the efficacy evaluation.
• Medical conditions in which it would be unsafe to use an alpha-blocker.
• The use of concomitant drugs that would confound the efficacy evaluation.
• The use of concomitant drugs that would be unsafe with this alpha-blocker.