CI

At a glance

ClinicalIndex Comparison Record
Phase 2Completed· 10 enrolled
Drug / intervention
EDTA +1 moredrug
Likely dose
Not stated in record
Structured eligibility isn't available for this trial yet — see the full criteria in the Eligibility tab below.

Standardized by ClinicalIndex from the ClinicalTrials.gov record · verify against the source.

Search/NCT04893577
NCT04893577Phase 2Completed

A Randomized, Efficacy Assessor-Blinded, Study to Assess Preliminary Efficacy and Safety of EDTA Eye Drops v. an Active Comparator in the Suppression of Herpes Simplex Virus Eruptions in Subjects With a History of Herpes Labialis

University of Utah·interventional·Posted May 19, 2021·Updated Oct 31, 2025

In Brief

A Phase 2 clinical trial evaluating EDTA and Abreva for Herpes Simplex Oral. Completed, enrolled 10 participants across 1 site.

Detailed Summary

This will be a randomized, efficacy assessor-blinded, parallel group, pilot study of up to 20 subjects with documented herpes labialis. Patients will be treated with the study drug, EDTA Eye Drops or the active comparator of Abreva. Potential subjects will be assessed during a screening visit that must take place no greater than 2 weeks prior to the Day 1 (Baseline) visit. During the screening period, subjects that meet all other entry criteria will undergo UV susceptibility testing to determine their individual MED (minimal erythemal dose). UV susceptibility testing takes place over two days with exposure to UV light on specified regions on the subject's back followed by an assessment of the exposed areas 24 hours later to identify the MED. Subjects who have a measurable MED will be allowed to enroll in the study. Each subject will be randomly assigned in a 1:1 ratio to receive either EED or Comparator. Patients who express a cold sore will track the lesion with a diary card to rate their pain levels, and any unusual symptoms at Day 1, Day 3, Day 5, Day 7, and Day 10. Patients may also take photographs of the lesion throughout the study.

Study Details

Study Typeinterventional
Allocation--
Masking--
Primary Purpose--
CountriesUnited States
Collaborators--

Timeline

Phase 2CompletedFinished
20222023202420252026
First PostedMay 19, 2021
Enrollment StartJan 20, 2022
Primary CompletionAug 31, 2024
Study CompletionAug 1, 2025
TodayJul 2, 2026
Enrollment to primary: 2.6 yearsPosted 5.1 years ago

Interventions

EDTAdrug

Patients will treat their cold sore with EDTA eye drops based upon their randomization.

Abrevadrug

Patients will treat their cold sore with Abreva based upon their randomization