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Liquorice Versus Sugar-Water Gargle for Prevention of Sore Throat

August 11, 2013

Licorice may reduces the risk of post-operative sore throat according to recent studies by a team of scientists based at the Vienna Medical University (Ruetzler et al).

The investigation tested the hypothesis that pre-operative gargling with liquorice solution prevents postoperative sore throat and post-extubation coughing in patients intubated with double-lumen tubes.


A Randomized, Double-Blind Comparison of Licorice Versus Sugar-Water Gargle was evaluated.

Data suggests that the incidence of postoperative sore throat was significantly reduced in patients who gargled with licorice rather than sugar-water: 1

The study concludes that licorice gargling halved the incidence of sore throat. Pre-induction gargling with licorice appears to be a simple way to prevent a common and bothersome complication.

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