Condition (MeSH)
Vitamin B Deficiency
ClinicalTrials.gov lists 151 trials for Vitamin B Deficiency or a narrower condition beneath it. Gaziosmanpasa Research and Education Hospital has the most among industry and government lead sponsors, with 2.
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Trials per phase
1 of the 151 trials are tagged with Vitamin B Deficiency itself; the rest are tagged with a narrower condition beneath it.
When did Vitamin B Deficiency trials start? (31)
Shown in this order: most recent first, 1990 onwards. 2026 is partial: trials registered with a 2026 start date so far, not a full year.
Trials over time, by phase
- Phase 1
- Phase 2
- Phase 2/3
- Phase 3
- Phase 4
- Not applicable
- Observational
Top of scale: 13
Trials registered with a start date in each year, 1990 onward, stacked by phase (complete years only; the current partial year is in the table's notes). The table below lists the same counts, most recent years first.
| Year | Trials started |
|---|---|
| 2026 (partial year) | 2 |
| 2025 | 10 |
| 2024 | 8 |
| 2023 | 9 |
| 2022 | 13 |
| 2021 | 4 |
| 2020 | 6 |
| 2019 | 11 |
| 2018 | 11 |
| 2017 | 9 |
Showing 10 of 31 earlier years.
Forecast of the full-year count, planned starts included, not rows of this table: about 4 trials starting in 2026 and about 6 in 2027, the average of the 24 months through September, counted as registered and carried forward. The rows of this table count trials registered so far with a start date in the year, planned starts included; the forecast looks ahead to the count for the whole year, so it is not the same measure. In backtests on conditions of this size, forecasts made part-way through the year were typically off by about 28 percent and ran about 20 percent low against the count later registered; forecasts made before the year began were off by about 39 percent and ran about 37 percent low against the count later registered. These figures rest on a few years of history (target years from 2018 to 2025, varying by figure), place each condition as it is mapped today rather than as it was then, and score against a count for the newest year that was still being revised. Only condition series were scored.
Prediction, not a registry value: median of 30 months from start to primary completion across 6 trials still running at the 2026-10-09 snapshot; registered median of 17 months across 107 trials with a primary completion typed Actual. Source: ClinicalTrials.gov / AACT (CTTI), public domain.
What phase are Vitamin B Deficiency trials in? (7)
Shown in this order: phase order.
Show the trials by phase as a table
| Phase | Trials |
|---|---|
| Phase 1 | 10 |
| Phase 2 | 6 |
| Phase 2/3 | 7 |
| Phase 3 | 3 |
| Phase 4 | 16 |
| Not applicable | 54 |
| Observational | 55 |
How many Vitamin B Deficiency trials are recruiting? (8)
Shown in this order: the order a trial moves through, from not yet recruiting to unknown.
| Status | Trials |
|---|---|
| Not yet recruiting | 4 |
| Recruiting | 8 |
| Enrolling by invitation | 1 |
| Active, not recruiting | 2 |
| Completed | 111 |
Showing 5 of 8 statuses.
Status as registered on ClinicalTrials.gov. Each trial is counted once.
Which lead sponsors run the most Vitamin B Deficiency trials? (1)
Shown in this order: most trials first. Lead sponsors the registry classes as industry, NIH, US federal, other government or network. A hospital or university the registry files as government can appear here. Sponsors it classes as academic or other are shown on the full page, because that class cannot separate an institution from a named investigator.
| Sponsor | Trials |
|---|---|
| Gaziosmanpasa Research and Education Hospital | 2 |
Which drugs are being tested for Vitamin B Deficiency? (7)
Shown in this order: most trials first. One row per drug, matched to a single molecule under all its names, ranked by number of trials.
| Drug | Trials |
|---|---|
| Cyanocobalamin | 16 |
| Folic (or folinic) acid | 10 |
| Thiamine | 8 |
| Hydroxocobalamin | 4 |
| Mecobalamin | 3 |
Showing 5 of 7 drugs.
Interventions as named in the registry (8)
Shown in this order: most trials first.
| Drug | Trials |
|---|---|
| Enalapril Maleate and Folic Acid Tablets (Yiye) | 2 |
| Vitamin B1 | 2 |
| i.m. injection of vitamin B12 | 1 |
| Amlodipine-FA tablet,low dose group | 1 |
| Choline Chloride for Injection | 1 |
Showing 5 of 8 interventions.
These are the names sponsors entered on ClinicalTrials.gov that we have not matched to a single molecule. Some are drugs under a brand or code name; others are procedures, doses or arm labels.
Which serious adverse events do Vitamin B Deficiency trials report? (1)
Shown in this order: most subjects affected first. Subjects affected summed across trials, a cross-trial signal, not a rate.
| Adverse event | Subjects affected | Trials |
|---|---|---|
| Vasovagal reaction | 1 | 1 |
Which publications cover Vitamin B Deficiency? (21)
Shown in this order: major-topic papers first, then newest, then most linked to trials.
| Publication | Journal | Year | Major topic |
|---|---|---|---|
| Suboptimal Vitamin B Intakes of Zambian Preschool Children: Evaluation of 24-Hour Dietary Recalls. | Food and nutrition bulletin | 2018 | Yes |
| Association of baseline vitamin D levels with clinical parameters and treatment outcomes in chronic hepatitis B. | Journal of hepatology | 2015 | Yes |
| Folic acid and vitamin B-12 supplementation and common infections in 6-30-mo-old children in India: a randomized placebo-controlled trial. | The American journal of clinical nutrition | 2013 | Yes |
| Influence of preconditioning-like hypoxia on the liver of developing methyl-deficient rats. | American journal of physiology. Endocrinology and metabolism | 2007 | Yes |
| Safety, tolerability and symptom outcomes associated with L-carnitine supplementation in patients with cancer, fatigue, and carnitine deficiency: a phase I/II study. | Journal of pain and symptom management | 2006 | Yes |
Showing 5 of 21 publications.
Sub-conditions in MeSH (7)
MeSH descendants one level down with at least one trial, most trials first.
Not on this page
Not measured: delivery record.
Checked, with nothing recorded for this condition: prevalence and rare-disease identity.