Synopsis

Source of validity: Traditional
Rating (out of 5): 2

Licorice (Glycyrrhiza glabra) has a long history of use in traditional medicine systems, particularly in Traditional Chinese Medicine (TCM) and Ayurveda, as a remedy for respiratory ailments such as bronchitis. It is commonly included in herbal formulas intended to soothe the throat, reduce coughing, and ease the symptoms of bronchial irritation. The root contains glycyrrhizin, which has demonstrated anti-inflammatory, demulcent (soothing), and mild expectorant properties in laboratory studies.

Scientific studies on licorice for bronchitis are limited and generally of low quality. Some laboratory and animal research suggests that licorice extracts have anti-inflammatory and antimicrobial effects, which could theoretically benefit bronchitis. However, high-quality clinical trials in humans are lacking. A few small human studies and reviews have suggested potential benefits, but results are not conclusive and often involve licorice as part of a multi-herb formulation, making it difficult to isolate its effects.

Due to these factors, the use of licorice for bronchitis is primarily justified by traditional use. While there is some preliminary scientific rationale for its effects, the evidence is not strong or definitive. Caution is advised with licorice use due to potential side effects, especially with prolonged use or high doses.

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