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Value of Liquid Potassium Magnesium Citrate in Controlling Hypertension

The safety and scientific validity of this study is the responsibility of the study sponsor and investigators. Listing a study does not mean it has been evaluated by the U.S. Federal Government. Read our disclaimer for details.
ClinicalTrials.gov Identifier: NCT01682837
Recruitment Status : Completed
First Posted : September 11, 2012
Results First Posted : April 28, 2017
Last Update Posted : April 28, 2017
Sponsor:
Information provided by (Responsible Party):
University of Texas Southwestern Medical Center

Brief Summary:
Liquid potassium-magnesium citrate (KMgCit) as a pharmaceutical formulation will lower blood pressure among patients with pre- or Stage I hypertension on their customary diet.

Condition or disease Intervention/treatment Phase
Hypertension Drug: Potassium chloride powder Drug: Potassium citrate powder Drug: Potassium magnesium citrate powder Drug: Placebo Phase 2

Detailed Description:
In this protocol, the investigators want to explore whether KMgCit taken during a customary dietary setting, might serve as a "surrogate" for the Dietary Approaches to Stop Hypertension (DASH) diet to lower blood pressure. This study has obvious biomedical importance. Lifestyle modifications are often recommended for pre- or Stage I hypertension. The DASH diet is such a modification that has been shown to be effective. However, this diet is costly and difficult to adhere to long-term. If KMgCit were shown to be effective in lowering blood pressure, it would provide a safe and convenient alternative to the DASH diet.

Study Type : Interventional  (Clinical Trial)
Actual Enrollment : 35 participants
Allocation: Randomized
Intervention Model: Crossover Assignment
Masking: Quadruple (Participant, Care Provider, Investigator, Outcomes Assessor)
Primary Purpose: Treatment
Official Title: Value of Liquid Potassium Magnesium Citrate in Controlling Hypertension
Study Start Date : October 2012
Actual Primary Completion Date : March 2015
Actual Study Completion Date : March 2015


Arm Intervention/treatment
Experimental: KMgCit, KCit, KCl, Placebo
Participants who received study drug in the order: Potassium Magnesium Citrate (KMgCit) powder, Potassium Citrate (KCit) powder, Potassium Chloride (KCl) powder, Placebo. Study medications were taken twice daily after dissolution in 250 ml water. Each phase was followed by at least 1 week of washout.
Drug: Potassium chloride powder
1 sachet mixed with 250 ml water (providing 20 meq K) given at breakfast and again dinner, for a total of 40 meq K/day, for 4 weeks
Other Name: KCl
Drug: Potassium citrate powder
1 sachet mixed with 250 ml water (providing 20 meq K) given at breakfast and dinner, for a total of 40 meq K/day, for 4 weeks
Other Name: KCit
Drug: Potassium magnesium citrate powder
1 sachet mixed with 250 ml water (providing 20 meq K) given at breakfast and dinner, for a total of 40 meq K/day, for 4 weeks
Other Name: KMgCit
Drug: Placebo
1 sachet mixed with 250 ml water given at breakfast and dinner, for a total of 2 sachets/day, for 4 weeks
Other Name: Microcystalline cellulose
Experimental: KMgCit, KCit, Placebo, KCl
Participants who received study drug in the order: Potassium Magnesium Citrate powder, Potassium Citrate powder, Placebo, Potassium Chloride powder. Study medications were taken twice daily after dissolution in 250 ml water. Each phase was followed by at least 1 week of washout.
Drug: Potassium chloride powder
1 sachet mixed with 250 ml water (providing 20 meq K) given at breakfast and again dinner, for a total of 40 meq K/day, for 4 weeks
Other Name: KCl
Drug: Potassium citrate powder
1 sachet mixed with 250 ml water (providing 20 meq K) given at breakfast and dinner, for a total of 40 meq K/day, for 4 weeks
Other Name: KCit
Drug: Potassium magnesium citrate powder
1 sachet mixed with 250 ml water (providing 20 meq K) given at breakfast and dinner, for a total of 40 meq K/day, for 4 weeks
Other Name: KMgCit
Drug: Placebo
1 sachet mixed with 250 ml water given at breakfast and dinner, for a total of 2 sachets/day, for 4 weeks
Other Name: Microcystalline cellulose
Experimental: KMgCit, KCl, KCit, Placebo
Participants who received study drug in the order: Potassium Magnesium Citrate powder, Potassium Chloride powder, Potassium Citrate powder, Placebo. Study medications were taken twice daily after dissolution in 250 ml water. Each phase was followed by at least 1 week of washout.
Drug: Potassium chloride powder
1 sachet mixed with 250 ml water (providing 20 meq K) given at breakfast and again dinner, for a total of 40 meq K/day, for 4 weeks
Other Name: KCl
Drug: Potassium citrate powder
1 sachet mixed with 250 ml water (providing 20 meq K) given at breakfast and dinner, for a total of 40 meq K/day, for 4 weeks
Other Name: KCit
Drug: Potassium magnesium citrate powder
1 sachet mixed with 250 ml water (providing 20 meq K) given at breakfast and dinner, for a total of 40 meq K/day, for 4 weeks
Other Name: KMgCit
Drug: Placebo
1 sachet mixed with 250 ml water given at breakfast and dinner, for a total of 2 sachets/day, for 4 weeks
Other Name: Microcystalline cellulose
Experimental: KMgCit, KCl, Placebo, KCit
Participants who received study drug in the order: Potassium Magnesium Citrate powder, Potassium Chloride powder, Placebo, Potassium Citrate powder. Study medications were taken twice daily after dissolution in 250 ml water. Each phase was followed by at least 1 week of washout.
Drug: Potassium chloride powder
1 sachet mixed with 250 ml water (providing 20 meq K) given at breakfast and again dinner, for a total of 40 meq K/day, for 4 weeks
Other Name: KCl
Drug: Potassium citrate powder
1 sachet mixed with 250 ml water (providing 20 meq K) given at breakfast and dinner, for a total of 40 meq K/day, for 4 weeks
Other Name: KCit
Drug: Potassium magnesium citrate powder
1 sachet mixed with 250 ml water (providing 20 meq K) given at breakfast and dinner, for a total of 40 meq K/day, for 4 weeks
Other Name: KMgCit
Drug: Placebo
1 sachet mixed with 250 ml water given at breakfast and dinner, for a total of 2 sachets/day, for 4 weeks
Other Name: Microcystalline cellulose
Experimental: KMgCit, Placebo, KCit, KCl
Participants who received study drug in the order: Potassium Magnesium Citrate powder, Placebo, Potassium Citrate powder, Potassium Chloride powder. Study medications were taken twice daily after dissolution in 250 ml water. Each phase was followed by at least 1 week of washout.
Drug: Potassium chloride powder
1 sachet mixed with 250 ml water (providing 20 meq K) given at breakfast and again dinner, for a total of 40 meq K/day, for 4 weeks
Other Name: KCl
Drug: Potassium citrate powder
1 sachet mixed with 250 ml water (providing 20 meq K) given at breakfast and dinner, for a total of 40 meq K/day, for 4 weeks
Other Name: KCit
Drug: Potassium magnesium citrate powder
1 sachet mixed with 250 ml water (providing 20 meq K) given at breakfast and dinner, for a total of 40 meq K/day, for 4 weeks
Other Name: KMgCit
Drug: Placebo
1 sachet mixed with 250 ml water given at breakfast and dinner, for a total of 2 sachets/day, for 4 weeks
Other Name: Microcystalline cellulose
Experimental: KMgCit, Placebo, KCl, KCit
Participants who received study drug in the order: Potassium Magnesium Citrate powder, Placebo, Potassium Chloride powder, Potassium Citrate powder. Study medications were taken twice daily after dissolution in 250 ml water. Each phase was followed by at least 1 week of washout.
Drug: Potassium chloride powder
1 sachet mixed with 250 ml water (providing 20 meq K) given at breakfast and again dinner, for a total of 40 meq K/day, for 4 weeks
Other Name: KCl
Drug: Potassium citrate powder
1 sachet mixed with 250 ml water (providing 20 meq K) given at breakfast and dinner, for a total of 40 meq K/day, for 4 weeks
Other Name: KCit
Drug: Potassium magnesium citrate powder
1 sachet mixed with 250 ml water (providing 20 meq K) given at breakfast and dinner, for a total of 40 meq K/day, for 4 weeks
Other Name: KMgCit
Drug: Placebo
1 sachet mixed with 250 ml water given at breakfast and dinner, for a total of 2 sachets/day, for 4 weeks
Other Name: Microcystalline cellulose
Experimental: KCit, KMgCit, KCl, Placebo
Participants who received study drug in the order: Potassium Citrate powder, Potassium Magnesium Citrate powder, Potassium Chloride powder, Placebo. Study medications were taken twice daily after dissolution in 250 ml water. Each phase was followed by at least 1 week of washout.
Drug: Potassium chloride powder
1 sachet mixed with 250 ml water (providing 20 meq K) given at breakfast and again dinner, for a total of 40 meq K/day, for 4 weeks
Other Name: KCl
Drug: Potassium citrate powder
1 sachet mixed with 250 ml water (providing 20 meq K) given at breakfast and dinner, for a total of 40 meq K/day, for 4 weeks
Other Name: KCit
Drug: Potassium magnesium citrate powder
1 sachet mixed with 250 ml water (providing 20 meq K) given at breakfast and dinner, for a total of 40 meq K/day, for 4 weeks
Other Name: KMgCit
Drug: Placebo
1 sachet mixed with 250 ml water given at breakfast and dinner, for a total of 2 sachets/day, for 4 weeks
Other Name: Microcystalline cellulose
Experimental: KCit, KMgCit, Placebo, KCl
Participants who received study drug in the order: Potassium Citrate powder, Potassium Magnesium Citrate powder, Placebo, Potassium Chloride powder. Study medications were taken twice daily after dissolution in 250 ml water. Each phase was followed by at least 1 week of washout.
Drug: Potassium chloride powder
1 sachet mixed with 250 ml water (providing 20 meq K) given at breakfast and again dinner, for a total of 40 meq K/day, for 4 weeks
Other Name: KCl
Drug: Potassium citrate powder
1 sachet mixed with 250 ml water (providing 20 meq K) given at breakfast and dinner, for a total of 40 meq K/day, for 4 weeks
Other Name: KCit
Drug: Potassium magnesium citrate powder
1 sachet mixed with 250 ml water (providing 20 meq K) given at breakfast and dinner, for a total of 40 meq K/day, for 4 weeks
Other Name: KMgCit
Drug: Placebo
1 sachet mixed with 250 ml water given at breakfast and dinner, for a total of 2 sachets/day, for 4 weeks
Other Name: Microcystalline cellulose
Experimental: KCit, KCl, KMgCit, Placebo
Participants who received study drug in the order: Potassium Citrate powder, Potassium Chloride powder, Potassium Magnesium Citrate powder, Placebo. Study medications were taken twice daily after dissolution in 250 ml water. Each phase was followed by at least 1 week of washout.
Drug: Potassium chloride powder
1 sachet mixed with 250 ml water (providing 20 meq K) given at breakfast and again dinner, for a total of 40 meq K/day, for 4 weeks
Other Name: KCl
Drug: Potassium citrate powder
1 sachet mixed with 250 ml water (providing 20 meq K) given at breakfast and dinner, for a total of 40 meq K/day, for 4 weeks
Other Name: KCit
Drug: Potassium magnesium citrate powder
1 sachet mixed with 250 ml water (providing 20 meq K) given at breakfast and dinner, for a total of 40 meq K/day, for 4 weeks
Other Name: KMgCit
Drug: Placebo
1 sachet mixed with 250 ml water given at breakfast and dinner, for a total of 2 sachets/day, for 4 weeks
Other Name: Microcystalline cellulose
Experimental: KCit, KCl, Placebo, KMgCit
Participants who received study drug in the order: Potassium Citrate powder, Potassium Chloride powder, Placebo, Potassium Magnesium Citrate powder. Study medications were taken twice daily after dissolution in 250 ml water. Each phase was followed by at least 1 week of washout.
Drug: Potassium chloride powder
1 sachet mixed with 250 ml water (providing 20 meq K) given at breakfast and again dinner, for a total of 40 meq K/day, for 4 weeks
Other Name: KCl
Drug: Potassium citrate powder
1 sachet mixed with 250 ml water (providing 20 meq K) given at breakfast and dinner, for a total of 40 meq K/day, for 4 weeks
Other Name: KCit
Drug: Potassium magnesium citrate powder
1 sachet mixed with 250 ml water (providing 20 meq K) given at breakfast and dinner, for a total of 40 meq K/day, for 4 weeks
Other Name: KMgCit
Drug: Placebo
1 sachet mixed with 250 ml water given at breakfast and dinner, for a total of 2 sachets/day, for 4 weeks
Other Name: Microcystalline cellulose
Experimental: KCit, Placebo, KMgCit, KCl
Participants who received study drug in the order: Potassium Citrate powder, Placebo, Potassium Magnesium Citrate powder, Potassium Chloride powder. Study medications were taken twice daily after dissolution in 250 ml water. Each phase was followed by at least 1 week of washout.
Drug: Potassium chloride powder
1 sachet mixed with 250 ml water (providing 20 meq K) given at breakfast and again dinner, for a total of 40 meq K/day, for 4 weeks
Other Name: KCl
Drug: Potassium citrate powder
1 sachet mixed with 250 ml water (providing 20 meq K) given at breakfast and dinner, for a total of 40 meq K/day, for 4 weeks
Other Name: KCit
Drug: Potassium magnesium citrate powder
1 sachet mixed with 250 ml water (providing 20 meq K) given at breakfast and dinner, for a total of 40 meq K/day, for 4 weeks
Other Name: KMgCit
Drug: Placebo
1 sachet mixed with 250 ml water given at breakfast and dinner, for a total of 2 sachets/day, for 4 weeks
Other Name: Microcystalline cellulose
Experimental: KCit, Placebo, KCl, KMgCit
Participants who received study drug in the order: Potassium Citrate powder, Placebo, Potassium Chloride powder, Potassium Magnesium Citrate powder. Study medications were taken twice daily after dissolution in 250 ml water. Each phase was followed by at least 1 week of washout.
Drug: Potassium chloride powder
1 sachet mixed with 250 ml water (providing 20 meq K) given at breakfast and again dinner, for a total of 40 meq K/day, for 4 weeks
Other Name: KCl
Drug: Potassium citrate powder
1 sachet mixed with 250 ml water (providing 20 meq K) given at breakfast and dinner, for a total of 40 meq K/day, for 4 weeks
Other Name: KCit
Drug: Potassium magnesium citrate powder
1 sachet mixed with 250 ml water (providing 20 meq K) given at breakfast and dinner, for a total of 40 meq K/day, for 4 weeks
Other Name: KMgCit
Drug: Placebo
1 sachet mixed with 250 ml water given at breakfast and dinner, for a total of 2 sachets/day, for 4 weeks
Other Name: Microcystalline cellulose
Experimental: KCl, KMgCit, KCit, Placebo
Participants who received study drug in the order: Potassium Chloride powder, Potassium Magnesium Citrate powder, Potassium Citrate powder, Placebo. Study medications were taken twice daily after dissolution in 250 ml water. Each phase was followed by at least 1 week of washout.
Drug: Potassium chloride powder
1 sachet mixed with 250 ml water (providing 20 meq K) given at breakfast and again dinner, for a total of 40 meq K/day, for 4 weeks
Other Name: KCl
Drug: Potassium citrate powder
1 sachet mixed with 250 ml water (providing 20 meq K) given at breakfast and dinner, for a total of 40 meq K/day, for 4 weeks
Other Name: KCit
Drug: Potassium magnesium citrate powder
1 sachet mixed with 250 ml water (providing 20 meq K) given at breakfast and dinner, for a total of 40 meq K/day, for 4 weeks
Other Name: KMgCit
Drug: Placebo
1 sachet mixed with 250 ml water given at breakfast and dinner, for a total of 2 sachets/day, for 4 weeks
Other Name: Microcystalline cellulose
Experimental: KCl, KMgCit, Placebo, KCit
Participants who received study drug in the order: Potassium Chloride powder, Potassium Magnesium Citrate powder, Placebo, Potassium Citrate powder. Study medications were taken twice daily after dissolution in 250 ml water. Each phase was followed by at least 1 week of washout.
Drug: Potassium chloride powder
1 sachet mixed with 250 ml water (providing 20 meq K) given at breakfast and again dinner, for a total of 40 meq K/day, for 4 weeks
Other Name: KCl
Drug: Potassium citrate powder
1 sachet mixed with 250 ml water (providing 20 meq K) given at breakfast and dinner, for a total of 40 meq K/day, for 4 weeks
Other Name: KCit
Drug: Potassium magnesium citrate powder
1 sachet mixed with 250 ml water (providing 20 meq K) given at breakfast and dinner, for a total of 40 meq K/day, for 4 weeks
Other Name: KMgCit
Drug: Placebo
1 sachet mixed with 250 ml water given at breakfast and dinner, for a total of 2 sachets/day, for 4 weeks
Other Name: Microcystalline cellulose
Experimental: KCl, KCit, KMgCit, Placebo
Participants who received study drug in the order: Potassium Chloride powder, Potassium Citrate powder, Potassium Magnesium Citrate powder, Placebo. Study medications were taken twice daily after dissolution in 250 ml water. Each phase was followed by at least 1 week of washout.
Drug: Potassium chloride powder
1 sachet mixed with 250 ml water (providing 20 meq K) given at breakfast and again dinner, for a total of 40 meq K/day, for 4 weeks
Other Name: KCl
Drug: Potassium citrate powder
1 sachet mixed with 250 ml water (providing 20 meq K) given at breakfast and dinner, for a total of 40 meq K/day, for 4 weeks
Other Name: KCit
Drug: Potassium magnesium citrate powder
1 sachet mixed with 250 ml water (providing 20 meq K) given at breakfast and dinner, for a total of 40 meq K/day, for 4 weeks
Other Name: KMgCit
Drug: Placebo
1 sachet mixed with 250 ml water given at breakfast and dinner, for a total of 2 sachets/day, for 4 weeks
Other Name: Microcystalline cellulose
Experimental: KCl, KCit, Placebo, KMgCit
Participants who received study drug in the order: Potassium Chloride powder, Potassium Citrate powder, Placebo, Potassium Magnesium Citrate powder. Study medications were taken twice daily after dissolution in 250 ml water. Each phase was followed by at least 1 week of washout.
Drug: Potassium chloride powder
1 sachet mixed with 250 ml water (providing 20 meq K) given at breakfast and again dinner, for a total of 40 meq K/day, for 4 weeks
Other Name: KCl
Drug: Potassium citrate powder
1 sachet mixed with 250 ml water (providing 20 meq K) given at breakfast and dinner, for a total of 40 meq K/day, for 4 weeks
Other Name: KCit
Drug: Potassium magnesium citrate powder
1 sachet mixed with 250 ml water (providing 20 meq K) given at breakfast and dinner, for a total of 40 meq K/day, for 4 weeks
Other Name: KMgCit
Drug: Placebo
1 sachet mixed with 250 ml water given at breakfast and dinner, for a total of 2 sachets/day, for 4 weeks
Other Name: Microcystalline cellulose
Experimental: KCl, Placebo, KMgCit, KCit
Participants who received study drug in the order: Potassium Chloride powder, Placebo, Potassium Magnesium Citrate powder, Potassium Citrate powder. Study medications were taken twice daily after dissolution in 250 ml water. Each phase was followed by at least 1 week of washout.
Drug: Potassium chloride powder
1 sachet mixed with 250 ml water (providing 20 meq K) given at breakfast and again dinner, for a total of 40 meq K/day, for 4 weeks
Other Name: KCl
Drug: Potassium citrate powder
1 sachet mixed with 250 ml water (providing 20 meq K) given at breakfast and dinner, for a total of 40 meq K/day, for 4 weeks
Other Name: KCit
Drug: Potassium magnesium citrate powder
1 sachet mixed with 250 ml water (providing 20 meq K) given at breakfast and dinner, for a total of 40 meq K/day, for 4 weeks
Other Name: KMgCit
Drug: Placebo
1 sachet mixed with 250 ml water given at breakfast and dinner, for a total of 2 sachets/day, for 4 weeks
Other Name: Microcystalline cellulose
Experimental: KCl, Placebo, KCit, KMgCit
Participants who received study drug in the order: Potassium Chloride powder, Placebo, Potassium Citrate powder, Potassium Magnesium Citrate powder. Study medications were taken twice daily after dissolution in 250 ml water. Each phase was followed by at least 1 week of washout.
Drug: Potassium chloride powder
1 sachet mixed with 250 ml water (providing 20 meq K) given at breakfast and again dinner, for a total of 40 meq K/day, for 4 weeks
Other Name: KCl
Drug: Potassium citrate powder
1 sachet mixed with 250 ml water (providing 20 meq K) given at breakfast and dinner, for a total of 40 meq K/day, for 4 weeks
Other Name: KCit
Drug: Potassium magnesium citrate powder
1 sachet mixed with 250 ml water (providing 20 meq K) given at breakfast and dinner, for a total of 40 meq K/day, for 4 weeks
Other Name: KMgCit
Drug: Placebo
1 sachet mixed with 250 ml water given at breakfast and dinner, for a total of 2 sachets/day, for 4 weeks
Other Name: Microcystalline cellulose
Experimental: Placebo, KMgCit, KCit, KCl
Participants who received study drug in the order: Placebo, Potassium Magnesium Citrate powder, Potassium Citrate powder, Potassium Chloride powder. Study medications were taken twice daily after dissolution in 250 ml water. Each phase was followed by at least 1 week of washout.
Drug: Potassium chloride powder
1 sachet mixed with 250 ml water (providing 20 meq K) given at breakfast and again dinner, for a total of 40 meq K/day, for 4 weeks
Other Name: KCl
Drug: Potassium citrate powder
1 sachet mixed with 250 ml water (providing 20 meq K) given at breakfast and dinner, for a total of 40 meq K/day, for 4 weeks
Other Name: KCit
Drug: Potassium magnesium citrate powder
1 sachet mixed with 250 ml water (providing 20 meq K) given at breakfast and dinner, for a total of 40 meq K/day, for 4 weeks
Other Name: KMgCit
Drug: Placebo
1 sachet mixed with 250 ml water given at breakfast and dinner, for a total of 2 sachets/day, for 4 weeks
Other Name: Microcystalline cellulose
Experimental: Placebo, KMgCit, KCl, KCit
Participants who received study drug in the order: Placebo, Potassium Magnesium Citrate powder, Potassium Chloride powder, Potassium Citrate powder. Study medications were taken twice daily after dissolution in 250 ml water. Each phase was followed by at least 1 week of washout.
Drug: Potassium chloride powder
1 sachet mixed with 250 ml water (providing 20 meq K) given at breakfast and again dinner, for a total of 40 meq K/day, for 4 weeks
Other Name: KCl
Drug: Potassium citrate powder
1 sachet mixed with 250 ml water (providing 20 meq K) given at breakfast and dinner, for a total of 40 meq K/day, for 4 weeks
Other Name: KCit
Drug: Potassium magnesium citrate powder
1 sachet mixed with 250 ml water (providing 20 meq K) given at breakfast and dinner, for a total of 40 meq K/day, for 4 weeks
Other Name: KMgCit
Drug: Placebo
1 sachet mixed with 250 ml water given at breakfast and dinner, for a total of 2 sachets/day, for 4 weeks
Other Name: Microcystalline cellulose
Experimental: Placebo, KCit, KMgCit, KCl
Participants who received study drug in the order: Placebo, Potassium Citrate powder, Potassium Magnesium Citrate powder, Potassium Chloride powder. Study medications were taken twice daily after dissolution in 250 ml water. Each phase was followed by at least 1 week of washout.
Drug: Potassium chloride powder
1 sachet mixed with 250 ml water (providing 20 meq K) given at breakfast and again dinner, for a total of 40 meq K/day, for 4 weeks
Other Name: KCl
Drug: Potassium citrate powder
1 sachet mixed with 250 ml water (providing 20 meq K) given at breakfast and dinner, for a total of 40 meq K/day, for 4 weeks
Other Name: KCit
Drug: Potassium magnesium citrate powder
1 sachet mixed with 250 ml water (providing 20 meq K) given at breakfast and dinner, for a total of 40 meq K/day, for 4 weeks
Other Name: KMgCit
Drug: Placebo
1 sachet mixed with 250 ml water given at breakfast and dinner, for a total of 2 sachets/day, for 4 weeks
Other Name: Microcystalline cellulose
Experimental: Placebo, KCit, KCl, KMgCit
Participants who received study drug in the order: Placebo, Potassium Citrate powder, Potassium Chloride powder, Potassium Magnesium Citrate powder. Study medications were taken twice daily after dissolution in 250 ml water. Each phase was followed by at least 1 week of washout.
Drug: Potassium chloride powder
1 sachet mixed with 250 ml water (providing 20 meq K) given at breakfast and again dinner, for a total of 40 meq K/day, for 4 weeks
Other Name: KCl
Drug: Potassium citrate powder
1 sachet mixed with 250 ml water (providing 20 meq K) given at breakfast and dinner, for a total of 40 meq K/day, for 4 weeks
Other Name: KCit
Drug: Potassium magnesium citrate powder
1 sachet mixed with 250 ml water (providing 20 meq K) given at breakfast and dinner, for a total of 40 meq K/day, for 4 weeks
Other Name: KMgCit
Drug: Placebo
1 sachet mixed with 250 ml water given at breakfast and dinner, for a total of 2 sachets/day, for 4 weeks
Other Name: Microcystalline cellulose
Experimental: Placebo, KCl, KMgCit, KCit
Participants who received study drug in the order: Placebo, Potassium Chloride powder, Potassium Magnesium Citrate powder, Potassium Citrate powder. Study medications were taken twice daily after dissolution in 250 ml water. Each phase was followed by at least 1 week of washout.
Drug: Potassium chloride powder
1 sachet mixed with 250 ml water (providing 20 meq K) given at breakfast and again dinner, for a total of 40 meq K/day, for 4 weeks
Other Name: KCl
Drug: Potassium citrate powder
1 sachet mixed with 250 ml water (providing 20 meq K) given at breakfast and dinner, for a total of 40 meq K/day, for 4 weeks
Other Name: KCit
Drug: Potassium magnesium citrate powder
1 sachet mixed with 250 ml water (providing 20 meq K) given at breakfast and dinner, for a total of 40 meq K/day, for 4 weeks
Other Name: KMgCit
Drug: Placebo
1 sachet mixed with 250 ml water given at breakfast and dinner, for a total of 2 sachets/day, for 4 weeks
Other Name: Microcystalline cellulose
Experimental: Placebo, KCl, KCit, KMgCit
Participants who received study drug in the order: Placebo, Potassium Chloride powder, Potassium Citrate powder, Potassium Magnesium Citrate powder. Study medications were taken twice daily after dissolution in 250 ml water. Each phase was followed by at least 1 week of washout.
Drug: Potassium chloride powder
1 sachet mixed with 250 ml water (providing 20 meq K) given at breakfast and again dinner, for a total of 40 meq K/day, for 4 weeks
Other Name: KCl
Drug: Potassium citrate powder
1 sachet mixed with 250 ml water (providing 20 meq K) given at breakfast and dinner, for a total of 40 meq K/day, for 4 weeks
Other Name: KCit
Drug: Potassium magnesium citrate powder
1 sachet mixed with 250 ml water (providing 20 meq K) given at breakfast and dinner, for a total of 40 meq K/day, for 4 weeks
Other Name: KMgCit
Drug: Placebo
1 sachet mixed with 250 ml water given at breakfast and dinner, for a total of 2 sachets/day, for 4 weeks
Other Name: Microcystalline cellulose



Primary Outcome Measures :
  1. 24-hour Average Systolic Blood Pressure [ Time Frame: 4 weeks ]
    This is the average systolic blood pressure over a 24 hour period.

  2. 24-hour Average Diastolic Blood Pressure [ Time Frame: 4 weeks ]
    The average diastolic blood pressure over a 24 hour period.


Secondary Outcome Measures :
  1. Office Systolic Blood Pressure [ Time Frame: 4 weeks ]
  2. Office Diastolic Blood Pressure [ Time Frame: 4 weeks ]
  3. Serum C-terminal Telopeptide (CTX) [ Time Frame: 4 weeks ]
  4. 24-hour Urinary Calcium [ Time Frame: 4 weeks of treatment ]
  5. Carotid to Femoral Pulse Wave Velocity [ Time Frame: 4 weeks ]
  6. Central Aortic Systolic Blood Pressure [ Time Frame: 4 weeks ]
  7. Central Aortic Diastolic Blood Pressure [ Time Frame: 4 weeks ]


Information from the National Library of Medicine

Choosing to participate in a study is an important personal decision. Talk with your doctor and family members or friends about deciding to join a study. To learn more about this study, you or your doctor may contact the study research staff using the contacts provided below. For general information, Learn About Clinical Studies.


Ages Eligible for Study:   21 Years and older   (Adult, Senior)
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   No
Criteria

Inclusion Criteria:

  • Men or women > 21 years of age
  • Any Race/Ethnicity
  • Pre- or Stage I hypertension (BP >= 120/80 and <= 159/99)

Exclusion Criteria:

  • Diabetes mellitus
  • Renal impairment (serum creatinine > 1.4 mg/dL)
  • Any heart diseases such as congestive heart failure or sustained arrhythmia
  • Chronic NSAID use
  • Treatment with diuretics
  • Gastroesophageal reflux disease (GERD) requiring treatment with acid reducing agents or antacid more than once a week
  • Esophageal-gastric ulcer
  • Chronic diarrhea
  • Hyperkalemia (serum > 4.6 meq/L for patients on angiotension-converting-enzyme (ACE) inhibitors or angiotensin receptor blockers (ARBs), serum K > 5.0 meq/L for patient not on ACE inhibitors or ARBs)
  • Abnormal liver function test (aspartate transaminase (AST) or alanine transaminase (ALT) above upper limit of normal range)
  • Subjects who require any potassium supplement on a regular basis from any reasons
  • Pregnancy
  • History of major depression, bipolar disorder, or schizophrenia

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): NCT01682837


Locations
United States, Texas
Hypertension Clinic - UT Southwestern Medical Center at Dallas
Dallas, Texas, United States, 75390
Sponsors and Collaborators
University of Texas Southwestern Medical Center
Investigators
Principal Investigator: Wanpen Vongpatanasin, MD University of Texas Southwestern Medical Center

Publications of Results:
Responsible Party: University of Texas Southwestern Medical Center
ClinicalTrials.gov Identifier: NCT01682837     History of Changes
Other Study ID Numbers: LiqKMgCit-1208-01
First Posted: September 11, 2012    Key Record Dates
Results First Posted: April 28, 2017
Last Update Posted: April 28, 2017
Last Verified: March 2017
Individual Participant Data (IPD) Sharing Statement:
Plan to Share IPD: No

Additional relevant MeSH terms:
Hypertension
Vascular Diseases
Cardiovascular Diseases
Citric Acid
Magnesium citrate
Potassium Citrate
Anticoagulants
Calcium Chelating Agents
Chelating Agents
Sequestering Agents
Molecular Mechanisms of Pharmacological Action
Cathartics
Gastrointestinal Agents
Diuretics
Natriuretic Agents
Physiological Effects of Drugs
Expectorants
Respiratory System Agents