# Vitamin B12 Supplement to Prevent Cognitive Decline

> **NCT02457507** · PHASE4 · COMPLETED · sponsor: **Chinese University of Hong Kong** · enrollment: 271 (actual)

## Conditions studied

- Cognitive Decline

## Interventions

- **DIETARY_SUPPLEMENT:** Vitamin B12
- **DIETARY_SUPPLEMENT:** Placebo

## Key facts

- **NCT ID:** NCT02457507
- **Lead sponsor:** Chinese University of Hong Kong
- **Sponsor class:** OTHER
- **Phase:** PHASE4
- **Study type:** INTERVENTIONAL
- **Status:** COMPLETED
- **Start date:** 2011-08
- **Primary completion:** 2016-01
- **Final completion:** 2016-01
- **Target enrollment:** 271 (ACTUAL)
- **Last updated:** 2016-01-28


## Primary source

ClinicalTrials.gov registry: https://clinicaltrials.gov/study/NCT02457507

## Citation

> US National Library of Medicine, ClinicalTrials.gov registration NCT02457507, "Vitamin B12 Supplement to Prevent Cognitive Decline". Retrieved via AI Analytics 2026-05-24 from https://api.ai-analytics.org/clinical/NCT02457507. Licensed CC0.

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