This trial is active, not recruiting.

Condition healthy
Treatment calcium formate
Phase phase 1
Sponsor University of Wisconsin, Madison
Collaborator Nephro-Tech 1, LLC
Start date July 2003
End date March 2007
Trial size 12 participants
Trial identifier NCT00204893, 2003-297


This is a Phase I, single center, open-label study of the dietary supplement calcium formate in normal, healthy female subjects. The purpose of the study is to determine whether daily use of calcium formate is safe and whether it accumulates in the eye.

United States No locations recruiting
Other Countries No locations recruiting

Study Design

Allocation non-randomized
Intervention model single group assignment
Masking open label

Primary Outcomes

vision testing
time frame:
serum formate levels
time frame:

Secondary Outcomes

visual acuity
time frame:
color vision
time frame:
time frame:
visual fields
time frame:
fundus photography
time frame:

Eligibility Criteria

Female participants from 18 years up to 65 years old.

Inclusion Criteria: - Healthy females Exclusion Criteria: - no ocular diseases

Additional Information

Official title Evaluation of the Ocular Safety of Calcium Formate in Normal, Healthy Female Subjects
Principal investigator Michael M Altaweel, MD
Trial information was received from ClinicalTrials.gov and was last updated in October 2013.
Information provided to ClinicalTrials.gov by University of Wisconsin, Madison.