Completed NA INTERVENTIONAL 2-arm NCT00826657

Vitamin B12 Supplementation Study

Assessment of Functional Vitamin B12 Deficiency in Mexican Women

Sponsor: USDA, Western Human Nutrition Research Center

Updated 6 times since 2017 Last updated: May 19, 2015 Started: Oct 31, 2004 Primary completion: Aug 31, 2005 Completion: Nov 30, 2006

This information is for research purposes only and is not medical advice. Consult a healthcare provider before making any medical decision.

A NA clinical study on Vitamin B12 Deficiency, this trial is completed. The trial is conducted by USDA, Western Human Nutrition Research Center and has accumulated 6 data snapshots since 2004. Longitudinal tracking of this trial contributes to a broader understanding of treatment development timelines.

Status Flow

Change History

6 versions recorded

Sep 2025 — Present [monthly]

Completed NA
Sep 2024 — Sep 2025 [monthly]

Completed NA
Jul 2024 — Sep 2024 [monthly]

Completed NA
Jan 2021 — Jul 2024 [monthly]

Completed NA
Jun 2018 — Jan 2021 [monthly]

Completed NA

▶ Show 1 earlier version

Jan 2017 — Jun 2018 [monthly]

Completed NA

First recorded

Oct 2004

Trial started

Per CT.gov start date — pre-dates our first snapshot

Eligibility Summary

No eligibility information available.

Contact Information

Sponsor contact:

USDA, Western Human Nutrition Research Center

Data source: USDA, Western Human Nutrition Research Center

For direct contact, visit the study record on ClinicalTrials.gov .

Study Locations

• Querétaro, Mexico