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Calcitriol and vitamin D in the treatment of obstructive sleep apnea

A comparative study of the effect of taking calcitriol versus cholecalciferol supplements on sleep quality and breathing in people with obstructive sleep apnea (OSA) and vitamin D deficiency in a clinical trial.

Status
Recruiting
Phases
Phase 3
Study type
Interventional
Source
IRCT
Registry ID
IRCT20250926067371N1
Enrollment
60
Registered
2025-11-03
Start date
2025-10-23
Completion date
Unknown
Last updated
2025-12-08

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

obstructive sleep apnea (OSA). Obstructive sleep apnea (adult) (pediatric)

Interventions

Intervention 1: Intervention group: Calcitriol group 0.25 micrograms, four times a day, for 8 weeks
Tehran Daroo Co., Iran) during the intervention period. Drug packets in identical packaging will be delivered to participants by a trained person who is unaware of the drug and the patients. Patients

Sponsors

Vice President for Research, Shiraz University of Medical Sciences
Lead Sponsor

Eligibility

Sex/Gender
All
Age
18 Years to 65 Years

Inclusion criteria

Inclusion criteria: 1. Age between 18 and 65 years Vitamin D deficiency (<20 mg/dl) Patients with mild to moderate obstructive sleep apnea (OSA) who do not require continuous positive airway pressure (CPAP) No immune system deficiency No platelet deficiency No acute systemic diseases No mental and cognitive diseases that make communication with the patient impossible

Exclusion criteria

Exclusion criteria: Having chronic diseases that cause sleep disorders Unwillingness to cooperate Has taken vitamin-mineral supplements or fish oil in the past 6 months Impaired liver and kidney function Normal vitamin D levels Taking medications that affect vitamin D levels (such as steroids and anticonvulsants) Cancer Hypercalcemia

Design outcomes

Primary

MeasureTime frame
Sleep quality. Timepoint: before and 8 weeks after intervention. Method of measurement: Pittsburgh Sleep Quality Questionnaire.;Respiratory Quality. Timepoint: before and 8 weeks after intervention. Method of measurement: St. George's Respiratory Quality Questionnaire.

Countries

Iran (Islamic Republic of)

Contacts

Public ContactDr. Laleh Mahmoudi

Shiraz University of Medical Sciences

mmohsenm67@yahoo.com42525694 71 0098

Outcome results

None listed

Source: IRCT (via WHO ICTRP) · Data processed: Feb 4, 2026