# Vitamin B12 Biomarker Responses to Supplementation

> **NCT04731948** · NA · COMPLETED · sponsor: **University of Ulster** · enrollment: 200 (actual)

## Conditions studied

- Healthy

## Interventions

- **DIETARY_SUPPLEMENT:** Folic Acid
- **DIETARY_SUPPLEMENT:** 2 µg Vitamin B12
- **DIETARY_SUPPLEMENT:** 10 µg Vitamin B12
- **DIETARY_SUPPLEMENT:** 50 µg Vitamin B12

## Key facts

- **NCT ID:** NCT04731948
- **Lead sponsor:** University of Ulster
- **Sponsor class:** OTHER
- **Phase:** NA
- **Study type:** INTERVENTIONAL
- **Status:** COMPLETED
- **Start date:** 2004-10-01
- **Primary completion:** 2006-12-12
- **Final completion:** 2006-12-12
- **Target enrollment:** 200 (ACTUAL)
- **Last updated:** 2021-02-01

## Collaborators

- [object Object]
- [object Object]

## Primary source

ClinicalTrials.gov registry: https://clinicaltrials.gov/study/NCT04731948

## Citation

> US National Library of Medicine, ClinicalTrials.gov registration NCT04731948, "Vitamin B12 Biomarker Responses to Supplementation". Retrieved via AI Analytics 2026-05-28 from https://api.ai-analytics.org/clinical/NCT04731948. Licensed CC0.

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