Aminooxyacetic acid (AOA)(AOAA)

Here we look at the claims for aminooxyacetic acid (AOA)(AOAA).

Version: 2.1 Last updated: April 2023 To be reviewed: November 2025

Treatment details

Illustration of bottle of pills.

Type

Pharmaceutical

3

Safety

Evidence of harm

2

Efficacy

No or limited evidence that it is effective

Recommended?

No

The makers claim

That aminooxyacetic acid may reduce central auditory hyperactivity that may be related to tinnitus[1].

What is the treatment?

Aminooxyacetic acid is taken in pill or capsule form. In studies, the dosage was 50 or 75mg, four times a day[2].

What are the downsides of this treatment?

In trials, about 70% of patients reported side effects, including nausea and dizziness[2].

Has there been research into this treatment?

Yes[2] [3]

What does the research say?

Although aminooxyacetic acid reduces the severity of tinnitus in about 20% of patients, the incidence of side effects makes the drug unacceptable for clinical use[2].

Few people are helped by aminooxyacetic acid, and many more experience side effects. It is not recommended for use.

Tinnitus UK

All online references accessed 1 November 2022 unless noted.

1. Tunkel DE, Bauer CA, Sun GH, et al. Clinical Practice Guideline: Tinnitus. Otolaryngology–Head and Neck Surgery. (2014) 151(2_suppl): S1-S40.
doi:10.1177/0194599814545325

2. Guth PS, Risey J, Briner W, Blair P, Reed HT, Bryant G, Norris C, Housley G, Miller R. Evaluation of aminooxyacetic acid as a palliative in tinnitus. Annals of Otology, Rhinology & Laryngology. (1990) Jan;99(1):74-9. doi:
10.1177/000348949009900113. PMID: 1688487.

3. Reed HT, Meltzer J, Crews P, Norris CH, Quine DB. Guth PS. Amino oxyacetic acid as a palliative in tinnitus. Archives of
Otolaryngology. (1985) 111: 803-805