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J Ethnopharmacol. 2010 Mar 24;128(2):545-8. doi: 10.1016/j.jep.2010.01.053. Epub 2010 Feb 4.

The effects of the Chinese herbal medicine EMF01 on salicylate-induced tinnitus in rats.

Author information

1
Dept of Pharmacology and Toxicology, School of Medical Sciences, University of Otago Medical School, Dunedin, New Zealand.

Abstract

AIM OF THE STUDY:

Traditional Chinese medicine (TCM) has been reported to successfully alleviate tinnitus, although well-controlled studies have not been conducted. In this study, we attempted to test a TCM, Er Ming Fang (EMF01) containing Rehmannia glutinosa, Cornus officinalis, Salvia mittiorrhiza, Pueraria, Schisandra chinensis, Poria cocos and Platycodon grandiflorum, on salicylate-induced tinnitus in rats, using a conditioned lick suppression paradigm.

MATERIALS AND METHODS:

A pilot study examined the effect of 8.75 g/kg and 17.5 g/kg EMF01 (delivered by oral gavage for 20 days) and showed a slight decrease in the suppression ratio (SR) in the 8.75 g/kg group. In order to confirm the possible effect of EMF01 on tinnitus at 8.75 g/kg, a further study was carried out with a larger sample size.

RESULTS:

While there were statistically significant differences between the treatment groups, post hoc tests revealed that EMF01 did not have any significant effect on salicylate-induced tinnitus.

CONCLUSIONS:

While this study does not support the efficacy of EMF01 in the treatment of salicylate-induced tinnitus, further studies should be conducted to determine if it alleviates tinnitus associated with acoustic trauma.

PMID:
20138209
DOI:
10.1016/j.jep.2010.01.053
[Indexed for MEDLINE]

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