Trial reportEuropean journal of clinical nutrition2018
The optimal dosage regimen of vitamin D supplementation for correcting deficiency in adolescents: a pilot randomized controlled trial.
Trial report in European journal of clinical nutrition, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 6 papers, 1 of them a synthesis that pooled it.
What it found
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.
Who cites it
6 citing papers in PubMed, 1 synthesis or guideline pooled it, 11 citations in OpenAlex.
- Dietary and Nutraceutical Interventions as an Adjunct to Non-Surgical Periodontal Therapy-A Systematic Review.Nutrients · 2023Pooled it
- Vitamin D Deficiency in Young Elite Soccer Players Residing Permanently in Regions above 55 Degrees North Latitude.Journal of bone metabolism · 2025Article
- A systematic review and meta-analysis of the response of serum 25-hydroxyvitamin D concentration to vitamin D supplementation from RCTs from around the globe.European journal of clinical nutrition · 2020Article
- Response to editor "A systematic review and meta-analysis of the response of serum 25-hydroxyvitamin D concentration to vitamin D supplementation from RCTs from around the globe".European journal of clinical nutrition · 2020Article
- Treatment with Vitamin D3 in Vitamin D Deficient Adolescents: A Pilot Study.Global pediatric health · 2020Article
- A Critical Appraisal of Strategies to Optimize Vitamin D Status in Germany, a Population with a Western Diet.Nutrients · 2019Article
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
5 authors at 1 institution in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
BACKGROUND/
objectivesVitamin D deficiency is common in adolescents but the optimal dosage regimen for correcting deficiency is unknown. To test the safety and efficacy of two different vitamin D dosage regimens to correct vitamin D deficiency in adolescents. SUBJECTS/
methodsIn this 12-month, double-blind, randomized placebo-controlled trial, 28 adolescents (serum 25 hydroxyvitamin D (25(OH)D) of 21 to 50 nmol/L) were randomly assigned to one of three groups: monthly (n = 9; vitamin D3 50,000 IU orally monthly plus three placebo tablets 3-monthly), 3-monthly (n = 9; 150,000 IU (3 × 50,000 IU tablets) 3-monthly and placebo orally monthly), or placebo (n = 10; placebo monthly and three placebo tablets 3-monthly). Serum 25(OH)D was measured at baseline, 3, 6 and 12 months.
resultsTwo participants withdrew after their baseline measurement from the 3-monthly group. At 12 months, one participant was deficient (≤50 nmol/L) in both the monthly and 3-monthly groups, whereas six out of ten in the placebo remained deficient (P = 0.055). At 12 months, the average serum 25(OH)D levels for the monthly, 3-monthly and placebo groups were 76.4, 64.7 and 49.7 nmol/L, respectively (P < 0.001 and P = 0.04 for differences between monthly and placebo groups and 3-monthly and placebo groups respectively, after adjustment for age, sex and seasonal variation). Adherence was 100% and adverse events were minor.
conclusionsBoth 50,000 IU monthly and 150,000 IU 3-monthly of vitamin D3 safely and effectively corrects vitamin D deficiency in adolescents. These data provide treatment options which can be used by health practitioners to tailor vitamin D dosage regiments according to patient preference and context.
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