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The Evaluation of the Safety of a New Drug for Benign Prostatic Hyperplasia Used for 9 Months

This study has been completed.
Information provided by:
Watson Pharmaceuticals Identifier:
First received: September 14, 2005
Last updated: April 6, 2010
Last verified: April 2010
A new drug for benign prostatic hyperplasia is used for 9 months to determine its long-term safety.

Condition Intervention Phase
Benign Prostatic Hyperplasia
Drug: Silodosin
Phase 3

Study Type: Interventional
Study Design: Intervention Model: Single Group Assignment
Masking: Open Label
Primary Purpose: Treatment
Official Title: A Multi-Center, Open-Label Evaluation of the Safety of a New Drug in the Treatment of the Signs and Symptoms of Benign Prostatic Hyperplasia

Resource links provided by NLM:

Further study details as provided by Watson Pharmaceuticals:

Primary Outcome Measures:
  • Adverse Events [ Time Frame: 9 months ]
    All reported adverse events were recorded. Clinically significant abnormal laboratory values or other clinical findings upon examination were also recorded as adverse events.

Secondary Outcome Measures:
  • International Prostate Symptom Score (IPSS) [ Time Frame: 9 months ]
    The IPSS is a symptom severity scale from 0 to 35 that is derived from a 7 item questionnaire. 0 indicates no symptoms and 35 indicates most severe symptoms.

Enrollment: 661
Study Start Date: September 2005
Study Completion Date: April 2007
Primary Completion Date: April 2007 (Final data collection date for primary outcome measure)
Arms Assigned Interventions
Experimental: Silodosin
Silodosin 8 mg per day with food
Drug: Silodosin
8 mg daily
Other Name: Rapaflo

Detailed Description:

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)


Ages Eligible for Study:   50 Years and older   (Adult, Senior)
Sexes Eligible for Study:   Male
Accepts Healthy Volunteers:   No

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.
  Contacts and Locations
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Please refer to this study by its identifier: NCT00224133

  Show 79 Study Locations
Sponsors and Collaborators
Watson Pharmaceuticals
Study Director: Lawrence Hill, Pharm D, RPh Watson Pharmaceuticals
  More Information

Additional Information:
Responsible Party: Gary Hoel, RPh, PhD, Executive Director of Clinical Research, Watson Laboratories, Inc. Identifier: NCT00224133     History of Changes
Other Study ID Numbers: SI04011
Study First Received: September 14, 2005
Results First Received: December 23, 2009
Last Updated: April 6, 2010

Keywords provided by Watson Pharmaceuticals:
benign prostatic hyperplasia, alpha blocker

Additional relevant MeSH terms:
Prostatic Hyperplasia
Pathologic Processes
Prostatic Diseases
Genital Diseases, Male
Adrenergic alpha-1 Receptor Antagonists
Adrenergic alpha-Antagonists
Adrenergic Antagonists
Adrenergic Agents
Neurotransmitter Agents
Molecular Mechanisms of Pharmacological Action
Physiological Effects of Drugs
Urological Agents processed this record on April 25, 2017