# Can Oral Vitamin B12 and Folate Supplementation Preserve Cognitive Function of Patients With Early Dementia?

> **NCT00164970** · PHASE4 · COMPLETED · sponsor: **Chinese University of Hong Kong** · enrollment: 166 (estimated)

## Conditions studied

- Dementia

## Interventions

- **DIETARY_SUPPLEMENT:** Vitamin B12
- **DIETARY_SUPPLEMENT:** folate

## Key facts

- **NCT ID:** NCT00164970
- **Lead sponsor:** Chinese University of Hong Kong
- **Sponsor class:** OTHER
- **Phase:** PHASE4
- **Study type:** INTERVENTIONAL
- **Status:** COMPLETED
- **Start date:** 2004-10
- **Primary completion:** 2008-12
- **Final completion:** 2008-12
- **Target enrollment:** 166 (ESTIMATED)
- **Last updated:** 2009-02-03


## Primary source

ClinicalTrials.gov registry: https://clinicaltrials.gov/study/NCT00164970

## Citation

> US National Library of Medicine, ClinicalTrials.gov registration NCT00164970, "Can Oral Vitamin B12 and Folate Supplementation Preserve Cognitive Function of Patients With Early Dementia?". Retrieved via AI Analytics 2026-06-25 from https://api.ai-analytics.org/clinical/NCT00164970. Licensed CC0.

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