Details checkedClinical trial listing onlyHistorical/discontinuedCheckedregistry-results+publication

University of Iowa zinc tinnitus trial

Also known as: Zinc sulfate, Zinc to Treat Tinnitus in the Elderly, NCT00683644

Institution-led study

Primary source

Sponsor / Institution

Institution-led study

Program Type

Therapeutic

Modality

Small Molecule

Stage

Phase 2

Status

Completed

Target Gene

—

Route / Mode

Oral capsule

Confidence

86%

Status Confidence

Status needs checking

Evidence Strength

Needs more support

Last Reviewed

2026-06-09

Geography

United States

Population

adult, older-adult, tinnitus

Trial IDs

Mechanism

Completed randomized placebo-controlled crossover trial testing oral zinc sulfate, 50 mg elemental zinc daily, for tinnitus in older adults.

Indications

Tinnitus

Notes

Corrected from a generic supplement row to the completed University of Iowa/Tinnitus Research Initiative crossover trial. ClinicalTrials.gov posted results and the publication reports the elderly tinnitus zinc trial; the record should remain historical and study-level rather than being presented as an active tinnitus therapy program.

Evidence & Sources

2 structured sources

clinicaltrials

Supports: canonicalName, aliases, allCompanies, isIndustrySponsored, stage, status, route, indications...

IDs: NCT00683644

Open

publication

Supports: mechanism, status, notes, keyEvents

IDs: PMID:23598691

Open

Key Events

2008-01-01