Efficacy and Safety of Co-Administered St. John’s Wort and Ginkgo biloba Extracts in Patients with Subjective Tinnitus: A Preliminary Prospective Randomized Controlled Trial

Author:

Kim Hantai1ORCID,Ha Jungho2ORCID,Park Hun Yi2,Choung Yun-Hoon2,Jang Jeong Hun2

Affiliation:

1. Department of Otorhinolaryngology–Head and Neck Surgery, Konyang University College of Medicine, Daejeon 35365, Republic of Korea

2. Department of Otolaryngology, Ajou University School of Medicine, Suwon 16499, Republic of Korea

Abstract

It is widely accepted that extracts of St. John’s wort (Hypericum perforatum) improve depressive symptoms, and tinnitus patients commonly presented with either mild depression or anxiety. We investigated whether co-administration of St. John’s wort and Ginkgo biloba extracts can suppress tinnitus. Participants with subjective tinnitus aged 30–70 years were randomly assigned to the experimental (co-administration of St. John’s wort and Ginkgo biloba extract; n = 20) or control (Ginkgo biloba extract only; n = 26) group for 12 weeks. Participants were blinded to the group assignments. After 12 weeks of treatment, no significant change in the minimum masking level on the tinnitogram was observed in either group. In the co-administration group, the Tinnitus Handicap Inventory (THI) score decreased from 34.7 (SD, 15.9) to 29.6 (16.0) (p = 0.102). However, the control group showed a significant decrease in THI score, from 30.5 (16.7) to 25.6 (17.1) (p = 0.046). Regarding the Short Form-36 Health Survey (SF-36), only the “Social Functioning” domain score changed significantly after extract co-administration, from 74.5 (21.5) to 83.9 (20.5) (p = 0.047). Co-administration of St. John’s wort and Ginkgo biloba extracts did not improve the symptoms of subjective tinnitus compared to administration of Ginkgo biloba extract alone.

Publisher

MDPI AG

Subject

General Medicine

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