Trial reportOsteoporosis international : a journal established as result of cooperation between the European Foundation for Osteoporosis and the National Osteoporosis Foundation of the USA2009
High-dose oral vitamin D3 supplementation in the elderly.
Trial report in Osteoporosis international : a journal established as result of cooperation between the European Foundation for Osteoporosis and the National Osteoporosis Foundation of the USA, 2009. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to 3 registered trials, which are not on this map. Cited by 71 papers, 8 of them syntheses that pooled it.
What it found
Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.
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.
Therapeutic Benefit of Preoperative Supplemental Vitamin D in Patients Undergoing Major Surgical Procedures.
Cholecalciferol Supplementation in Critically Ill Patients With Severe Vitamin D Deficiency in Intensive Care Unit- A Randomized Controlled Trial.
Study of the Effect of Ergocalciferol on Plasma and Urinary Mucin-1 Levels in Healthy Individuals and Individuals With Autosomal Dominant Tubulo-Interstitial Kidney Disease Due to MUC1 Mutations (ADTKD-MUC1)
Who cites it
71 citing papers in PubMed, 8 syntheses or guidelines pooled it, 166 citations in OpenAlex.
- A systematic review and meta-analysis of effect of vitamin D levels on the incidence of COVID-19.Cardiology journal · 2021Pooled it
- 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 · 2019Pooled it
- Vitamin D supplementation and its influence on muscle strength and mobility in community-dwelling older persons: a systematic review and meta-analysis.Journal of human nutrition and dietetics : the official journal of the British Dietetic Association · 2017Pooled it
- A meta-analysis of high dose, intermittent vitamin D supplementation among older adults.PloS one · 2015Pooled it
- Vitamin D and vitamin D analogues for preventing fractures in post-menopausal women and older men.The Cochrane database of systematic reviews · 2014Pooled it
- Large, single-dose, oral vitamin D supplementation in adult populations: a systematic review.Endocrine practice : official journal of the American College of Endocrinology and the American Association of Clinical Endocrinologists · 2014Pooled it
- Vitamin D supplementation for prevention of mortality in adults.The Cochrane database of systematic reviews · 2014Pooled it
- Relationship between vitamin D, parathyroid hormone, and bone health.The Journal of clinical endocrinology and metabolism · 2011Pooled it
- Impact of vitamin D supplementation in the prognosis of patients with SARS-CoV2 pneumonia admitted to the intensive care unit - a randomized controlled trial.Frontiers in immunology · 2025Trial
- High-dose versus low-dose ergocalciferol for correcting hypovitaminosis D after fragility hip fracture: a randomized controlled trial.BMC geriatrics · 2021Trial
- Trying to identify who may benefit most from future vitamin D intervention trials: a post hoc analysis from the VITDAL-ICU study excluding the early deaths.Critical care (London, England) · 2019Trial
- A Randomized Study to Compare a Monthly to a Daily Administration of Vitamin D₃ Supplementation.Nutrients · 2018Trial
- Vitamin D Supplementation in Nursing Home Residents: Randomized Single Cholecalciferol Loading Protocol vs. Individualized Loading Dose Regimen.The journal of nutrition, health & aging · 2017Trial
- Trial
- Vitamin D supplementation in nursing home patients: randomized controlled trial of standard daily dose versus individualized loading dose regimen.Drugs & aging · 2015Trial
- The effect of a single, large bolus of vitamin D in healthy adults over the winter and following year: a randomized, double-blind, placebo-controlled trial.European journal of clinical nutrition · 2015Trial
- Trial
- Can one or two high doses of oral vitamin D3 correct insufficiency in a non-supplemented rheumatologic population?Osteoporosis international : a journal established as result of cooperation between the European Foundation for Osteoporosis and the National Osteoporosis Foundation of the USA · 2013Trial
- The effect of prior bisphosphonate therapy on the subsequent therapeutic effects of strontium ranelate over 2 years.Osteoporosis international : a journal established as result of cooperation between the European Foundation for Osteoporosis and the National Osteoporosis Foundation of the USA · 2012Trial
- A randomized controlled trial of vitamin D dosing strategies after acute hip fracture: no advantage of loading doses over daily supplementation.BMC musculoskeletal disorders · 2011Trial
11 more citing papers are in PubMed but not listed here.
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 2 institutions in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
summaryDaily dosing with vitamin D often fails to achieve optimal outcomes, and it is uncertain what the target level of 25-hydroxyvitamin D should be. This study found that large loading doses of vitamin D(3) rapidly and safely normalize 25OHD levels, and that monthly dosing is similarly effective after 3-5 months. With baseline 25OHD > 50 nmol/L, vitamin D supplementation does not reduce PTH levels.
introductionThere is concern that vitamin D supplementation doses are frequently inadequate, and that compliance with daily medication is likely to be suboptimal.
methodsThis randomized double-blind trial compares responses to three high-dose vitamin D(3) regimens and estimates optimal 25-hydroxyvitamin D (25OHD) levels, from changes in parathyroid hormone (PTH), and procollagen type I amino-terminal propeptide (P1NP) in relation to baseline 25OHD. Sixty-three elderly participants were randomized to three regimens of vitamin D supplementation: a 500,000-IU loading dose; the loading dose plus 50,000 IU/month; or 50,000 IU/month.
resultsThe Loading and Loading + Monthly groups showed increases in 25OHD of 58 +/- 28 nmol/L from baseline to 1 month. Thereafter, levels gradually declined to plateaus of 69 +/- 5 nmol/L and 91 +/- 4 nmol/l, respectively. In the Monthly group, 25OHD reached a plateau of ~80 +/- 20 nmol/L at 3-5 months. There were no changes in serum calcium concentrations. PTH and P1NP were only suppressed by vitamin D treatment in those with baseline 25OHD levels <50 and <30 nmol/L, respectively.
conclusionsLarge loading doses of vitamin D(3) rapidly and safely normalize 25OHD levels in the frail elderly. Monthly dosing is similarly effective and safe, but takes 3-5 months for plateau 25OHD levels to be reached.
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What OpenQuestion holds
Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.