Glycyrrhiza glabra is commonly known as licorice. Licorice is the major source of glycyrrhizin. There is no reported stability indicating method for glycyrrhizin in the literature so far. Therefore, it was proposed to develop a stability indicating method and validate the method for glycyrrhizin and its application in G. glabra root extract. Method validation parameters were performed as per the International Council for Harmonization guidelines. The chromatographic separation was achieved on a Zorbax Extended C-18 (250 × 4.6 mm, 5 μm) column. The separation achieved using the mobile phase consisted of 0.1% formic acid in water and acetonitrile in gradient elution. The flow rate was kept at 1 mL/min, and ultraviolet-visible spectroscopy detection was at 250 nm. The average retention time of glycyrrhizin was found to be 7.30 min. Stress degradation studies were performed and confirmed that only acidic degradation has shown a degradation profile of glycyrrhizin up to 40%. The percentage of glycyrrhizin was found to be 0.40% in the G. glabra extract. This may be further explored for commercial applications.
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