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Clinical Trials/NCT07034677
NCT07034677RecruitingPhase 4

Treatment With Indapamide in Patients With Post-Surgical Hypoparathyroidism

Lars Rejnmark1 site in 1 country24 target enrollmentStarted: August 1, 2025Last updated:
Interventions

Trial Snapshot

Phase
Phase 4
Status
Recruiting
Sponsor
Enrollment
24
Locations
1
Primary Endpoint
Urinary calcium excretion

Study Overview

Brief Summary

The aim of this study is to investigate the effect of daily treatment with Indapamide for 14 days on urinary calcium excretion in patients with post surgical hypoparathyroidisme.

Detailed Description

The aim of this study is to investigate the effect of daily treatment with Indapamide for 14 days on urinary calcium excretion in patients with post surgical hypoparathyroidisme.

Patients will do weekly blood sampling and 24 hour urine collection every second week.

Study Design

Study Type
Interventional
Allocation
Randomized
Intervention Model
Crossover
Primary Purpose
Prevention
Masking
Triple (Participant, Care Provider, Investigator)

Eligibility Criteria

Ages
18 Years to — (Adult, Older Adult)
Sex
All
Accepts Healthy Volunteers
No

Inclusion Criteria

  • Chronic post surgical hypoparathyroidism diagnosed > 1 year ago
  • Age ≥ 18 years
  • Require treatment with active vitamin D ≥ 1 µg/day
  • Ionized plasma calcium between 1.15-1.25 mmol/L
  • 25(OH)D vitamin ≥ 50 nmol/L
  • Plasma magnesium > 0.65 mmol/L
  • Able to read and understand Danish
  • Willing and able to sign the informed consent form

Exclusion Criteria

  • Estimated glomerular filtration rate (eGFR) < 30 ml/min/1.73 m3
  • Active cancer or former (except thyroid and basal cell skin) cancer treatment < 1 year ago
  • Pregnancy, pregnancy plans, or breastfeeding < 1 year ago
  • Abnormal arterial pressure at time of screening defined as symptomatic hypotension or systolic blood pressure < 100 mmHg
  • Plasma potassium < 3.5 mmol/L
  • Any current disease that might affect the calcium metabolism such as but not limited to:
  • Recent prolonged immobility
  • Untreated diabetes (HbA1c > 53 mmol/mol)
  • Severe liver disease or hepatic encephalopathy
  • Untreated thyroid disease
  • Current disease that might affect gastrointestinal absorption
  • Use of medications such as lithium or diuretics within 4 weeks prior to start of treatment
  • Known allergy or sensitivity to Indapamide, its excipients or sulfonamides
  • Known galactosemia, lactase deficiency, or glucose-galactose malabsorption

Arms & Interventions

Indapamide

Active Comparator

14 days with active drug Indapamide 1.5 mg/day

Intervention: Indapamide 1.5 MG SR (Drug)

Placebo

Placebo Comparator

14 days with placebo

Intervention: Placebo (Drug)

Outcomes

Primary Outcomes

Urinary calcium excretion

Time Frame: Day 15

investigate the effect of daily treatment with Indapamide for 14 days compared to placebo on urinary calcium excretion in patients with chronic post-surgical hypoparathyroidism

Secondary Outcomes

  • Ionized calcium(Day 15)
  • Sodium diet(Day 15)
  • Safety (blood pressure)(Day 15)

Investigators

Sponsor
Lars Rejnmark
Sponsor Class
Other
Responsible Party
Sponsor Investigator
Principal Investigator

Lars Rejnmark

MD, Ph.D., DMSc, prof

University of Aarhus

Study Sites (1)

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