Liquorice liquid extract

IntroductionLiquorice (Glycyrrhiza glabra) is a traditional herbal remedy with various pharmacological activities mainly used for digestive and respiratory ailments. GutGard® is a flavonoid-rich, deglycyrrhizinated liquorice root extract and is standardized to glabridin (≥3.5% w/w), and others viz., glabrol, eicosanyl caffeate, docosyl caffeate, and total flavonoids (≥10% w/w) with glycyrrhizin (≤3.0% w/w)  as glycyrrhizin causes electrolyte imbalance, hypertension, and water retention. Hence, the objective of the current study was to assess the efficacy, safety, and tolerability of GutGard® in managing gastroesophageal reflux (GER)-related symptoms when compared to placebo.MethodsIt was a double-blind, parallel group, randomized, placebo-controlled trial with participants randomized in a 1:1 ratio to either the placebo group or GutGard® group. The duration of the interventions/treatment was for 28 days and the follow-up visits were done at day 7, day 14, day 28, and day 35. A telephonic follow-up was also done on day 21. The primary outcome measures studied was the change in the Gastroesophageal Reflux Disease-Health-Related Quality of Life and the Gastroesophageal Reflux Disease Symptom Assessment Scale.ResultsWe screened a total of n = 296 participants and enrolled n = 200 participants and obtained written, informed consent from them. Participants in the GutGard® group reported a significantly better quality of life at the end of the intervention period (p = 0.014). They also reported earlier resolution of symptoms of GER as against the placebo group, especially the symptoms of heartburn (p = 0.017 on day 14 and p = 0.005 on day 28) and regurgitation (p = 0.025 on day 7, p = 0.029 on day 14, and p = 0.022 on day 28).ConclusionsThe GutGard® group showed better and earlier resolution (within 2 weeks) of symptoms of GER as against the placebo group, especially heartburn and regurgitation.IntroductionLiquorice (Glycyrrhiza glabra) is a traditional herbal remedy with various pharmacological activities mainly used for digestive and respiratory ailments. GutGard® is a flavonoid-rich, deglycyrrhizinated liquorice root extract and is standardized to glabridin (≥3.5% w/w), and others viz., glabrol, eicosanyl caffeate, docosyl caffeate, and total flavonoids (≥10% w/w) with glycyrrhizin (≤3.0% w/w)  as glycyrrhizin causes electrolyte imbalance, hypertension, and water retention. Hence, the objective of the current study was to assess the efficacy, safety, and tolerability of GutGard® in managing gastroesophageal reflux (GER)-related symptoms when compared to placebo.MethodsIt was a double-blind, parallel group, randomized, placebo-controlled trial with participants randomized in a 1:1 ratio to either the placebo group or GutGard® group. The duration of the interventions/treatment was for 28 days and the follow-up visits were done at day 7, day 14, day 28, and day 35. A telephonic follow-up was also done on day 21. The primary outcome measures studied was the change in the Gastroesophageal Reflux Disease-Health-Related Quality of Life and the Gastroesophageal Reflux Disease Symptom Assessment Scale.ResultsWe screened a total of n = 296 participants and enrolled n = 200 participants and obtained written, informed consent from them. Participants in the GutGard® group reported a significantly better quality of life at the end of the intervention period (p = 0.014). They also reported earlier resolution of symptoms of GER as against the placebo group, especially the symptoms of heartburn (p = 0.017 on day 14 and p = 0.005 on day 28) and regurgitation (p = 0.025 on day 7, p = 0.029 on day 14, and p = 0.022 on day 28).ConclusionsThe GutGard® group showed better and earlier resolution (within 2 weeks) of symptoms of GER as against the placebo group, especially heartburn and regurgitation.

Abstract licence: CC BY-NC

BackgroundRenowned since ancient times for its medical properties, liquorice is nowadays mainly used for flavoring candies or soft drinks. Continuous intake of large amounts of liquorice is a widely known cause of pseudo-hyperaldosteronism leading to hypertension and hypokalemia. These manifestations are usually mild, although in some cases may generate life-threatening complications, i.e., arrhythmias, muscle paralysis, rhabdomyolysis, and coma. In addition, liquorice has an important estrogenic-like activity.MethodsWe summarized the current knowledge about liquorice and reviewed 104 case reports in both the English and Italian languages from inception to June 2023 concerning complications due to an excess of liquorice intake.ResultsIn contrast to most published data, female sex and old age do not appear to be risk factors. However, hypertension and electrolyte imbalance (mainly hypokalemia) are prevalent features. The detection of glycyrrhetinic acid in blood is very uncommon, and the diagnosis is essentially based on an accurate history taking.ConclusionsAlthough there is not a significant mortality rate, liquorice toxicity often requires hospitalization and therefore represents a significant health concern. Major pharmaceutical drug regulatory authorities should solicit public awareness about the potentially dangerous effects caused by excessive use of liquorice.

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BackgroundThe common cold is typically managed with decongestants, antihistamines, antitussives and antipyretics. In addition to these established medications, herbal ingredients have been used over centuries to help treat common cold symptoms. The Ayurveda and Jamu systems of medicine, originating from India and Indonesia, respectively, have leveraged herbal therapies to treat many illnesses.MethodAn expert roundtable discussion comprising specialists in Ayurveda, Jamu, pharmacology and surgery along with a literature review was conducted to evaluate the use of four herbs - ginger, liquorice, turmeric and peppermint - for common cold symptom management in Ayurvedic texts, Jamu publications and monographs from the World Health Organization, Health Canada and various European guidelines.DiscussionDue to a lack of antivirals, common cold management revolves around maintaining personal hygiene and symptom management. Herbal medicines have been an integral part of many cultures worldwide. Despite its growing acceptance, there is a perception that healthcare providers lack interest and may prevent patients from discussing the use of herbal medicines. Limited education and training may also widen the communication gap between patients and healthcare providers, hindering effective management.ConclusionEvaluation of scientific evidence and the standing in international monographs can offer perspectives on the use of herbal medicines for common cold management.

Abstract licence: CC BY-NC-ND

Medicinal plants have grown in popularity as a result of their numerous health benefits in animals, birds, and humans. Liquorice (Glycyrrhiza glabra) is a prominent traditional medicinal plant belonging to the Fabaceae family of legumes. The principal constituent of liquorice root is glycyrrhizin. Liquorice extract have been noted to have a significant antimicrobial (antifungal, antibacterial, antibiotic, antiviral, antiseptic, and antiprotozoal) effects. Improved feed conversion ratio, average body weight, and feed intake have been observed in quails supplemented with dietary 200 ppm of liquorice root extract and 1% probiotic in their diet. The liquorice extract has been found to have immunogenic and antioxidant properties, which could help poultry improve their growth performance, feed efficiency, carcass characteristics, and serum biochemistry, and can potentially act as a viable alternative to antibiotics in the treatment and prevention of various respiratory, digestive, and immune disorders.

Abstract licence: CC BY-NC-ND 4.0

Acute pancreatitis (AP) is a severe gastrointestinal inflammatory disease with increasing mortality and morbidity. Glycyrrhiza glabra, commonly known as Liquorice, is a widely used plant containing bioactive compounds like Glycyrrhizin, which possesses diverse medicinal properties such as anti-inflammatory, antioxidant, antiviral, and anticancer activities. The objective of this study is to investigate the active components, relevant targets, and underlying mechanisms of the traditional Chinese medicine Glycyrrhiza glabra in the treatment of AP. Utilizing various computational biology methods, we explored the potential targets and molecular mechanisms through Glycyrrhizin supplementation. Computational results indicated that Glycyrrhizin shows promising pharmacological potential, particularly with mitogen-activated protein kinase 3 (MAPK3) protein (degree: 70), forming stable complexes with Glycyrrhizin through ionic and hydrogen bonding interactions, with a binding free energy (ΔGbind) of -33.01 ± 0.08 kcal/mol. Through in vitro experiments, we validated that Glycyrrhizin improves primary pancreatic acinar cell injury by inhibiting the MAPK/STAT3/AKT signaling pathway. Overall, MAPK3 emerges as a reliable target for Glycyrrhizin's therapeutic effects in AP treatment. This study provides novel insights into the active components and potential targets and molecular mechanisms of natural products.

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The objective of our study was to analyse the extracts from six medicinal herb roots (marshmallow, dandelion, liquorice, angelica, burdock, and comfrey) in terms of antioxidant capacity (ABTS, DPPH) and inhibition of advanced glycation end product (AGEs) formation. The quantification of phenolic acids and flavonoids was analysed using the UHPLC-DAD-MS method. Fifteen polyphenolic compounds were detected in the studied herbs. The higher number of polyphenols were found in marshmallows (ten polyphenols), while the lowest was in comfrey (five compounds). Liquorice root revealed the highest individual phenolic concentration (382 µg/g dm) with the higher contribution of kaempferol-3-O-rutinoside. Comfrey root extract was characterised by the most abundant TPC (Total Phenolic Content) value (29.79 mg GAE/ g dm). Burdock and comfrey showed the strongest anti-AGE activity studies with the BDA-GLU model. Burdock root was also characterised by the highest anti-AGE activity in the BSA-MGO model. The highest antioxidant capacity was determined by ABTS (72.12 µmol TE/g dw) and DPPH (143.01 µmol TE/g dw) assays for comfrey extract. The p-coumaric acid content was significantly correlated with anti-AGE activity determined by the BSA-MGO model. This research sheds new light on the bioactivity of root herbs, explaining the role of p-coumaric acid in preventing diabetes.

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The quinolizidine alkaloids matrine and its N-oxide oxymatrine occur in plants of the genus Sophora. Recently, matrine was sporadically detected in liquorice products. Morphological similarity of the liquorice plant Glycyrrhiza glabra with Sophora species and resulting confusion during harvesting may explain this contamination, but use of matrine as pesticide has also been reported. The detection of matrine in liquorice products raised concern as some studies suggested a genotoxic activity of matrine and oxymatrine. However, these studies are fraught with uncertainties, putting the reliability and robustness into question. Another issue was that Sophora root extracts were usually tested instead of pure matrine and oxymatrine. The aim of this work was therefore to determine whether matrine and oxymatrine have potential for causing gene mutations. In a first step and to support a weight-of-evidence analysis, in silico predictions were performed to improve the database using expert and statistical systems by VEGA, Leadscope (Instem®), and Nexus (Lhasa Limited). Unfortunately, the confidence levels of the predictions were insufficient to either identify or exclude a mutagenic potential. Thus, in order to obtain reliable results, the bacterial reverse mutation assay (Ames test) was carried out in accordance with OECD Test Guideline 471. The test set included the plate incorporation and the preincubation assay. It was performed with five different bacterial strains in the presence or absence of metabolic activation. Neither matrine nor oxymatrine induced a significant increase in the number of revertants under any of the selected experimental conditions. Overall, it can be concluded that matrine and oxymatrine are unlikely to have a gene mutation potential. Any positive findings with Sophora extracts in the Ames test may be related to other components. Notably, the results also indicated a need to extend the application domain of respective (Q)SAR tools to secondary plant metabolites.

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BackgroundThe dermal extracellular matrix (ECM) is a dynamic scaffold composed mainly of proteins, with collagen as the key structural component providing resilience and support to the skin. Post-menopause, declining estrogen levels lead to a significant reduction in skin health, notably a 30% decrease in collagen types I and III within 5 years.AimTo discover natural extracts that stimulate collagen production.MethodsWe utilized PathwayStudio to analyze protein-protein interactions and identify regulators of essential collagen types. Our study assessed Glycyrrhiza uralensis extract's ability to boost collagen production and enhance dermal density both in vitro and in vivo.ResultsPathwayStudio analysis highlighted phytoestrogens including glycyrrhizin, isoliquiritigenin, liquiritigenin, liquiritin, and glabrol, as potential candidates. Liquorice rhizome (G. uralensis), used in traditional Chinese medicine, is rich in phytoestrogens like liquiritigenin. The G. uralensis extract increased collagen I and III gene expression and pro-collagen I protein levels in human dermal fibroblasts and inhibited UVB and pollution-induced matrix metalloproteinase-1 (MMP1) production. In an in vivo study, a topical formulation containing the extract significantly improved dermal density after 56 days, measured by the DUB SkinScanner.ConclusionsThese findings suggest G. uralensis extract as a promising agent for enhancing collagen production and skin health, particularly in postmenopausal women. Further research is needed to explore its mechanisms and long-term effects.

Abstract licence: CC BY