Alpinia galanga (L.) Willd: A comprehensive review on phytochemistry, pharmacology, analytical characterization, nanotechnology applications, clinical evidences and safety profile

Alpinia galanga (L.) Willd., popularly known as greater galangal, is a rhizomatous plant widely utilized in Ayurveda, Unani, and traditional Southeast Asian medicine for its diverse therapeutic benefits. The plant is enriched with phytoconstituents such as flavonoids, phenolics, terpenoids, and essential oils that contribute to its broad pharmacological spectrum. Extensive research highlights its antioxidant, anti-inflammatory, antimicrobial, hepatoprotective, neuroprotective, anticancer, and cardioprotective activities, thereby supporting its traditional claims with modern scientific evidence. In addition to conventional ethnomedicinal usage, emerging computational approaches and cheminformatics-based analyses have provided valuable insights into the drug-likeness and pharmacokinetic profiles of its bioactive molecules. Advancements in analytical tools, particularly LC-MS, HPLC, and spectroscopic techniques, have enabled precise characterization and quantification of key markers such as galangin, enhancing its quality control and standardization potential. Moreover, modern formulation strategies, including phytosomes, nanoemulsions, and flavonosomes, are being explored to overcome limitations of poor bioavailability and improve therapeutic efficacy. Despite promising preclinical evidence, challenges remain in terms of clinical validation, large-scale standardization, and regulatory acceptance. Future research integrating Quality by Design (QbD), green extraction methods, and systematic clinical trials could pave the way for its development as a novel phytopharmaceutical or nutraceutical. This review comprehensively presents the ethnomedicinal relevance, phytochemistry, pharmacology, and modern innovations on A. galanga, emphasizing its scope in contemporary healthcare.