Clear Sound 911

Here we look at the claims for Clear Sound 911.

Version: 1.0 Last updated: April 2023 To be reviewed: November 2025

Treatment details

Illustration of a bottle with a star on the front of it.


Branded dietary supplement



Evidence of harm



No or limited evidence that it is effective



Claims for treatment

Clear Sound 911 is a “dietary supplement made from natural ingredients to restore hearing loss”[1].

What is the treatment?

Clear Sound 911 is a capsule which you take once a day.

The supplement claims to contain[1]:

Ashwagandha; Oat straw; Vitamin B1 (thiamine); Vitamin B2 (riboflavin); Gamma-aminobutyric acid (GABA); Rhodiola; Skullcap; Hawthorn; Chamomile; Potassium; Lutein; Lemon balm; Valerian; Bacopa monnieri; Magnolia; Magnesium; Biotin.

What are the downsides of this treatment?

Potential side effects from constituents[5] [6]. Cost – this supplement currently is on sale for $69.95 for one month’s supply excluding shipping and taxes.[1]

Has there been research into this treatment?

There have been no papers published on Clear Sound 911 as a supplement, but there have been a number published on its component parts.

What does the research say?

There is no evidence that any of the known components of this supplement are effective for treating tinnitus[2-15] [18-20], with the exception of magnesium[16].

Although some of the components are thought of as safe, some may be harmful, in particular ashwagandha[3], skullcap[11] (if Galerina autumnalis is the plant being referred to), Bacopa monnieri[13] and potassium[17] (if taken in large doses).

Although independent evidence is limited, what there is does not show that the components of this supplement are effective for tinnitus and that there may be risks involved in taking this supplement. We would suggest you talk to your GP before taking any new medication or supplement.

“Dietary supplements should not be recommended to treat tinnitus.”[21]

No mention of supplements for the treatment of hearing loss are mentioned in the current NICE guideline for hearing loss[22].

Tinnitus UK


There appears to be a lot of similarity between the marketing of this product and other products such as Sonus Complete and Tinnitus 911 – please see the relevant information sheets for details.

All online references accessed 14 November 2022 unless noted.

1. Inter Press Service News Agency. Clear Sound 911 Reviews – Scam or Ingredients Really Work? Supplement Exposed.

2. US National Library of Medicine. Ashwaganda.

3. The Drugsite Trust. Ashwaganda.

4. The Drugsite Trust. Oats.

5. US National Library of Medicine. Thiamine.

6. US National Library of Medicine. Riboflavin.

7. Healthline Media. What does Gamma-aminobutyric acid (GABA) do?

8. The Drugsite Trust. Rhodiola Rosea.

9. Tyler VE, Malone MH et al. Chromatographic and pharmacologic evaluation of some toxic Galerina species. Lloydia.(1963) 26 (3): 154–7.

10. Orhan IE. Phytochemical and Pharmacological Activity Profile of Crataegus Oxyacantha L. (Hawthorn) – A Cardiotonic Herb. Current Medicinal Chemistry. (2018) 25(37) 4854-4865.
DOI: 10.2174/092986732366616091909

11. National Center for Complementary and Integrative Health. Chamomile.

12. WebMD LLC. Potassium – Uses, Side Effects, and More.

13. The Drugsite Trust. Lutein.

14. The Drugsite Trust. Lemon balm.

15. The Drugsite Trust. Valerian.

16. The Drugsite Trust. Bacopa.

17. The Drugsite Trust. Magnolia Bark Extract.

18. Cevette MJ, Barrs DM, Patel A, et al. Phase 2 study examining magnesium-dependent tinnitus. International Tinnitus Journal. (2011);16(2):168-73

19. The Drugsite Trust. Biotin.

20. Coelho C, Tyler R et al. Survey on the Effectiveness of Dietary Supplements to Treat Tinnitus. American Journal of Audiology. (2016) 25(3): 184-205

21. National Guideline Centre (UK). Hearing loss in adults: assessment and management (2018). Mar.