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The effect of vitamin D supplementation versus placebo on moderate to severe asthma

The effect of vitamin D supplementation versus placebo on moderate to severe asthma: A triple blinded randomized clinical trial

Status
Active, not recruiting
Phases
Phase 2
Study type
Interventional
Source
IRCT
Registry ID
IRCT201402029014N22
Enrollment
136
Registered
2014-05-26
Start date
2014-06-22
Completion date
Unknown
Last updated
2018-02-22

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

Conditions

Asthma. Asthma

Interventions

Intervention 1: Routine treatment of asthma plus oral vitamin D 50000 IU single dose, every week, for eight weeks. Intervention 2: Routine treatment of asthma.
Treatment - Drugs
Placebo
Routine treatment of asthma plus oral vitamin D 50000 IU single dose, every week, for eight weeks
Routine treatment of asthma

Sponsors

Vice-chancellor for Research the Technology, Hamadan University of Medical Sciences
Lead Sponsor

Eligibility

Sex/Gender
All
Age
18 Years to No maximum

Inclusion criteria

Inclusion criteria: Inclusion criteria: (a) having moderate to severe asthma; (b) age of 18 or above; (c) documented vitamin D deficiency (vitamin D level less than 20 ngr/ml). Exclusion criteria: (a) being pregnant; (b) using calcium or vitamin D during the last 3 months; (c) having history of malabsorption or using drugs effecting vitamin D absorption and metabolism; (d) having other chronic obstructive lung diseases or thoracic skeletal defect.

Exclusion criteria

Exclusion criteria:

Design outcomes

Primary

MeasureTime frame
Measuring forced expiratory volume in the first second (FEV1). Timepoint: at baseline and eight weeks after treatment. Method of measurement: using spirometer.;Measuring forced vital capacity (FVC). Timepoint: at baseline and eight weeks after treatment. Method of measurement: using spirometer.

Secondary

MeasureTime frame
Nausea and vomiting. Timepoint: 8 weeks after treatment. Method of measurement: Question.

Countries

Iran (Islamic Republic of)

Contacts

Public ContactDr Mayam Vasheghani

Shahid Beheshti Hospital

mvasheghani9@yahoo.com+98 81 1838 0717

Outcome results

None listed

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