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Optimal initial and maintenance doses of ergocalciferol supplementation for treatment of hypovitaminosis D in Thai adults: A randomized, double-blinded dose-comparison study

Optimal initial and maintenance doses of ergocalciferol supplementation for treatment of hypovitaminosis D in Thai adults: A randomized, double-blinded dose-comparison study

Status
Active, not recruiting
Phases
Phase 1Phase 2
Study type
Interventional
Source
TCTR
Registry ID
TCTR20170226001
Enrollment
400
Registered
2017-02-26
Start date
2017-05-01
Completion date
Unknown
Last updated
2026-08-03

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

Conditions

Hypovitaminosis D Ergocalciferol Vitamin D supplementation Vitamin D deficiency Vitamin D insufficiency

Interventions

Ergocalciferol 40000 unit per week,Ergocalciferol 60000 unit per week,Ergocalciferol 80000 unit per week
Active Comparator Drug,Active Comparator Drug,Active Comparator Drug
40000 unit per week ,60000 unit per week,80000 unit per week

Sponsors

Ratchadaphiseksomphot Endowment Fund
Lead Sponsor
Ratchadaphiseksomphot Endowment Fund
Collaborator

Eligibility

Sex/Gender
All
Age
18 Years to No maximum

Inclusion criteria

Inclusion criteria: Thai Adult 18 years of age and over Bodymass index within 18 - 30 kg/square meter Vitamin D level (25(OH)D) less than 30 ng/ml

Exclusion criteria

Exclusion criteria: Renal insufficiency, eGFR less than 30 ml/min Nephrotic syndrome Renal calculi Cirrhosis Malabsorptive condition Cancer Hypercalcemia Receive any vitamin D supplement or other drug which interfere with vitamin D metabolism esp. carbamazepine, phenobarbital, phenytoin, steroid, lipase inhibitor, bile acid sequestrant, before enrollment within 6 months

Design outcomes

Primary

MeasureTime frame
Percentage of vitamin D achievement equal or over 30 ng/ml 3 month and 6 month post vitamin D prescription Percentage

Secondary

MeasureTime frame
Percentage of vitamin D achievement equal or over 30 ng/ml in each group 3 month and 6 month post vitamin D prescription Percentage

Countries

Thailand

Contacts

Public ContactLalita Lohawijarn

Physician

lita_som@yahoo.com66869658789

Outcome results

None listed

Source: TCTR (via WHO ICTRP) · Data processed: Aug 9, 2026