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CompletedNCT05310760Updated Mar 8, 2023

Effectiveness of Vitamin C Supplementation in Treatment of Rickets

A Phase 2/3 interventional study of Vit C in Nutritional Rickets and Bone Turnover Rate Disorder, sponsored by Cairo University. Completed at 1 site in Egypt. Open to participants aged 6 Months to 3 Years. Per ClinicalTrials.gov, last updated 2023-03-08.

Primary conditionRicketsRegistry: Vitamin D DeficiencyReclassifiedWhy we changed it
Registry
Vitamin D Deficiency — the first condition term the registry derived for this study.
ClinicalTrials.gg
Rickets
Why
  1. The study's listed conditions name Rickets, a narrower term within Vitamin D Deficiency.
Confidence
High: the new condition is named in the study's own listed conditions. Of 351 hand-checked studies reclassified this way, 68% were exactly right and 84% in the right disease family; the registry's first term was right for 5% (measured 2026-10-21). How we classify →
Wrong?
Tell us the study's main condition →

Sponsored by Cairo University · Phase 2/3, Interventional, and Treatment

Phase
Phase 2/3
Study type
Interventional
Enrollment
88
Allocation
Randomized
Ages
6 Months to 3 Years
Sex
All
01

Study summary

Effectiveness of therapeutic dose of vitamin C in infants and children with nutritional rickets as an adjuvant therapy with vitamin D and calcium The study is two armed Randomized Control Trial, to validate the role of Vit C supplementation on bone turnover infants and children with nutritional rickets.

Read the detailed description
  • Population of study \& disease condition The study will include 88 infants and children with nutritional rickets
  • Study setting:

The patients will be recruited from out-patient clinic of Cairo University Children's Hospital.

  • Inclusion criteria: Any infant or child between 6 months and 3 years with nutritional rickets
  • Exclusion criteria:

    1. Unwilling to participate in the study.
    2. Non nutritional causes of rickets as hypoparathyroidism, renal causes, chronic liver disease, and malabsorption.
    3. Children on vitamin C supplements above Recommended Daily allowance
  • Methodology in details:
  • History including age, sex, onset of manifestations, nutritional history, family history of similar condition, history of tetany or convulsion, motor development, drug intake, fractures, history of dentition, and manifestations of vitamin C deficiency (musculoskeletal pain, irritability, loss of appetite, petechiae, ecchymosis, gingival bleeding, alopecia, and poor wound healing) will be taken.
  • Examination including anthropometric measurements, limb deformities, anterior fontanelle, cranial sutures, teeth, and gingival mucosa.
  • Serum measurements of calcium, phosphorous, alkaline phosphate, Parathyroid hormone, and 25 hydroxy-vitamin D will be done at first visit then follow up of serum calcium, phosphorous and alkaline phosphatase after 4 and 12 weeks after starting the treatment.
  • Radiological investigation in the form of anterior view X-ray of the knee that reveals the metaphysis end and epiphysis of the femur and tibia will be done at first visit and follow up after 4 weeks.
  • Serum level of post treatment N-MID-osteocalcin detection (marker of bone turnover) [6] by ELIZA , Catalogue number E1499Hu Bioassay technology la laboratory England/China

The patient will be randomized 1:1 by computer randomization sequence into two groups (A, B). All patients will receive therapeutic dose of vitamin D (either single-day dose of 600,000 U or daily doses of 5000 U for 2-3 months) and oral elemental calcium according to Recommended Daily allowance . However, group A will receive oral vitamin C (100 mg three times daily for one week then 100 mg once daily for 1-3 months) in addition to the above-mentioned treatment.

02

Conditions studied

  • Nutritional Rickets
  • Bone Turnover Rate Disorder

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Keywords

  • Nutritional Rickets
  • Vitamin C
  • Rickets
  • Bone Turnover
  • Osteocalcin
03

In context

Rickets Reclassified

36 studies on the registry are indexed under Rickets; 2 are open to participants now.

This study's enrollment of 88 is above the median of 23 across 22 interventional studies indexed under Rickets.

Browse Rickets studies →

Lead sponsor

Cairo University is the lead sponsor of 4,941 studies on the registry; 1,458 are open to participants now.

Of its 37 completed or terminated interventional studies of FDA-regulated products, 5 (14%) have results posted.

Compared within Rickets, this study's primary condition as ClinicalTrials.gg classifies it; the registry's first condition term is Vitamin D Deficiency. The counts are of registry records indexed under each term, refreshed daily. How we classify →

04

Who can participate

Ages eligible
6 Months to 3 Years
Sexes eligible
All
Accepts healthy volunteers
No

Go through the criteria one by one — yes, no or not sure — and take the list to your doctor or the study team. Kept in this browser only.

Inclusion criteria

Clinical diagnosis:

  • Nutritional rickets in infants or children between 6 months and 3 years.
  • Normal liver and kidney functions.
  • The parents must be compliant to the clinic visits and the treatment doses.

Exclusion criteria

Exclusion Criteria:

  • Unwilling to participate in the study.
  • Non nutritional causes of rickets as hypoparathyroidism, renal causes, chronic liver disease, and malabsorption.
  • Children on vitamin C supplements above RDA.
05

Study design

Phase
Phase 2 / Phase 3
Primary purpose
Treatment
Allocation
Randomized
Intervention model
Parallel assignment
Masking
Single (Participant)
Enrollment
88 participants (actual)

Study arms

  • Active comparator
    Vitamin C receiving

    Therapeutic doses of Vitamin C are added to rachitic children treatment

    Drug: Vit C

  • No intervention
    Non Vitamin C receiving

    The traditional treatment of nutritional rickets

Interventions

  • DrugVit C

    Oral vitamin C (100 mg three times daily for one week then 100 mg once daily for 1-3 months)

06

What researchers measure

Primary outcomes

  1. Effectiveness of therapeutic doses of vitamin C in clinical finding of rickets

    Measuring the clinical finding of rickets by history taking from parents (abnormal gait , delayed dentition, delayed milestones)

    Time frame: After 1 month stating the trial

  2. Effectiveness of therapeutic doses of vitamin C on anthropometric measures clinical finding of rickets

    Measuring the anthropometric measures with correlation to the baseline ,these measures includes : Body mass index

    Time frame: After 1 month stating the trial

  3. Effectiveness of therapeutic doses of vitamin C in clinical signs of rickets

    Examination to monitor the other symptoms of rickets including bone tenderness , bone deformities , hypotonia.

    Time frame: After 1 month stating the trial

  4. Laboratory follow up of rachitic children and infants

    Follow up calcium , phosphorus , parathyroid hormone, vitamin D and bone mineralization (serum MID-Osteocalcin by ELIZA

    Time frame: after 1 month from stating the trial

  5. Radiological assessment after treatment for bone healing

    X-Ray of both knees , in A-P view to show metaphysis and epiphysis of both femur and tibia to assess the osteopenia, bone frying and bone cupping

    Time frame: after 1 month from stating the trial

Secondary outcomes

  1. Effectiveness of therapeutic doses of vitamin C in clinical finding of rickets

    Measuring the clinical finding of rickets by history taking from parents (abnormal gait , delayed dentition, delayed milestones)

    Time frame: after 3 month from stating the trial

  2. Effectiveness of therapeutic doses of vitamin C on anthropometric measures clinical finding of rickets

    Measuring the clinical finding of rickets by anthropometric measures with correlation to the baseline ,these measures includes : Body mass index

    Time frame: after 3 month from stating the trial

  3. Effectiveness of therapeutic doses of vitamin C in clinical signs of rickets

    Examination to monitor the other symptoms of rickets including bone tenderness , bone deformities , hypotonia.

    Time frame: after 3 month from stating the trial

  4. Laboratory follow up of rachitic children and infants

    Follow up calcium , phosphorus , parathyroid hormone, vitamin D and bone mineralization (serum MID-Osteocalcin by ELIZA.

    Time frame: after 3 month from stating the trial

  5. Radiological assessment after treatment for bone healing

    X-Ray of both knees , in A-P view to show metaphysis and epiphysis of both femur and tibia to assess the osteopenia, bone frying and bone cupping

    Time frame: After 3 month from stating the trial

07

Study locations

1 site
  • Cairo University Faculty of Medicine ,Abo elrish Hospital
    Cairo, Egypt
08

References and documents

Individual participant data

Plan to share: Yes

Supporting information: Study protocol, Statistical analysis plan, Informed consent form

Time frame: After publishing

No publications or documents are linked to this record.

09

Timeline

Tracking since Sep 25, 2026
ElapsedEstimatedEstimated, not yet reached

Ran from Mar 2022 to primary completion in Jul 2022, 4 months.

How these figures are worked out, and which studies are left out of them.

Registered
Jan 31, 2022
First posted
Apr 5, 2022
StartActual
Mar 1, 2022
Primary completionActual
Jul 1, 2022
CompletionActual
Dec 31, 2022
Last update
Mar 8, 2023
What these dates mean
Start.
When the first participant enrolled; while estimated, when the study expects to open to recruitment.
Primary completion.
When the last participant was examined or treated to collect data for the study's main question, its primary outcome. A study that stopped early gives the date its data collection stopped.
Completion.
When the last participant's last visit took place, for every outcome, secondary ones and side effects included: the end of the study. Often later than primary completion, sometimes the same day.
Actual and Est.
Actual means the registry says the date has happened. Est. (estimated) is a date the sponsor plans or expects. It can still move, and the sponsor is expected to change it to actual once it has passed.
No changes since tracking began. The registry record was last updated on Mar 8, 2023, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
10

Registry details

Key details

Study ID
NCT05310760
Lead sponsor
Cairo University
Responsible party
Fatma Abdel Maksoud (Lecturer of Clinical and Chemical Pathology, Cairo University) — Principal investigator
First posted
Apr 5, 2022
Start date
Mar 1, 2022
Primary completion
Jul 1, 2022
Completion
Dec 31, 2022
Last update
Mar 8, 2023

Study contacts

Fatina Fadel, Prof
principal investigator · Professor of Pediatrics Faculty of Medicine Cairo University

Oversight

Data monitoring committee
Yes
FDA-regulated drug
No
FDA-regulated device
No
View the source record on ClinicalTrials.gov ↗

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This study is completed, as verified in Mar 2023. You cannot join it, but the record below documents what was studied.

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