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The Effects of Potassium Citrate on Bone Metabolism

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ClinicalTrials.gov Identifier: NCT00357331
Recruitment Status : Completed
First Posted : July 27, 2006
Results First Posted : June 12, 2017
Last Update Posted : June 12, 2017
Information provided by (Responsible Party):

Study Description
Brief Summary:

Skeletal buffering of chronic acid loads may contribute to a significant amount of bone loss over time. Evidence from a few small short-term studies suggests that basic compounds, namely potassium citrate and potassium bicarbonate may reduce bone loss and improve bone density.

The purpose of this study is to evaluate the effects of potassium citrate on bone metabolism. We hypothesize that administration of potassium citrate to postmenopausal women with osteopenia will reduce bone resorption and improve bone mineral density.

Postmenopausal women with osteopenia (T score between -1.0 and -2.5) and no history of fracture will be randomized to either daily potassium citrate or placebo for one year. Primary outcomes will be markers of bone turnover, which will be measured over 12 months. Secondary outcomes will be bone mineral density, compliance, and adverse events.

Condition or disease Intervention/treatment Phase
Bone Diseases, Metabolic Osteoporosis, Postmenopausal Drug: potassium citrate Phase 4

  Show Detailed Description

Study Design

Study Type : Interventional  (Clinical Trial)
Actual Enrollment : 83 participants
Allocation: Randomized
Intervention Model: Parallel Assignment
Intervention Model Description: Double Blind Placebo Controlled Trial
Masking: Triple (Participant, Investigator, Outcomes Assessor)
Primary Purpose: Treatment
Official Title: A Randomized Placebo Controlled Double Blind Investigation of the Effects of Potassium Citrate on Bone Metabolism in Postmenopausal Osteopenia
Actual Study Start Date : August 2006
Primary Completion Date : April 2011
Study Completion Date : April 2011

Arms and Interventions

Arm Intervention/treatment
Experimental: Potassium Citrate
Potassium Citrate 20 meq twice daily
Drug: potassium citrate
20 meq by mouth in capsule form twice daily
Other Name: uro cit
Placebo Comparator: Placebo
Drug: potassium citrate
20 meq by mouth in capsule form twice daily
Other Name: uro cit

Outcome Measures

Primary Outcome Measures :
  1. Urinary-N-telopeptide [ Time Frame: Baseline,1,3,6,12 months ]
    One measure of bone turnover was urinary-NTX as a second void morning urine.

  2. P1NP (Amino-terminal Propeptide of Type I Procollagen) [ Time Frame: Baseline,1,3,6,12 months ]
    One measure of bone turnover was P1NP as a morning lab draw.

Secondary Outcome Measures :
  1. Number of Participants With Stable Bone Mineral Density (BMD) Over 12 Months at All Sites. [ Time Frame: 1 year ]
    BMD was performed at lumbar spine, total hip and femoral neck using dual-energy X-ray Absorptiometry (DXA) Hologic; Bedford, Massachusetts.

Eligibility Criteria

Information from the National Library of Medicine

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Ages Eligible for Study:   45 Years to 75 Years   (Adult, Senior)
Sexes Eligible for Study:   Female
Accepts Healthy Volunteers:   Yes

Inclusion Criteria:

  • Postmenopausal women, more than 2 years post menopause
  • Osteopenia, defined as a T score at the lumbar spine or total hip between -1.0 and -2.5
  • No history of prior fragility fracture

Exclusion criteria:

  • Renal insufficiency
  • Use of potassium sparing diuretics
  • Use of potassium supplements
  • Hyperkalemia
  • Secondary causes of osteoporosis or metabolic bone disease
  • Delayed gastric emptying
  • esophageal compression, intestinal obstruction or stricture
  • use of anticholinergic medication
  • active urinary tract infection.
Contacts and Locations

Information from the National Library of Medicine

To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.

Please refer to this study by its ClinicalTrials.gov identifier (NCT number): NCT00357331

United States, New York
Weill Cornell Medical College
New York, New York, United States, 10021
Sponsors and Collaborators
Weill Medical College of Cornell University
Principal Investigator: Naina Sinha Gregory, M.D. Weill Medical College of Cornell University
More Information

Responsible Party: Weill Medical College of Cornell University
ClinicalTrials.gov Identifier: NCT00357331     History of Changes
Other Study ID Numbers: 0604008486
First Posted: July 27, 2006    Key Record Dates
Results First Posted: June 12, 2017
Last Update Posted: June 12, 2017
Last Verified: May 2017
Individual Participant Data (IPD) Sharing Statement:
Plan to Share IPD: No

Studies a U.S. FDA-regulated Drug Product: Yes
Studies a U.S. FDA-regulated Device Product: No
Product Manufactured in and Exported from the U.S.: No

Keywords provided by Weill Medical College of Cornell University:
postmenopausal osteopenia
bone loss

Additional relevant MeSH terms:
Bone Diseases
Osteoporosis, Postmenopausal
Metabolic Diseases
Bone Diseases, Metabolic
Musculoskeletal Diseases
Citric Acid
Potassium Citrate
Calcium Chelating Agents
Chelating Agents
Sequestering Agents
Molecular Mechanisms of Pharmacological Action
Natriuretic Agents
Physiological Effects of Drugs
Respiratory System Agents