Pachymic acid is a triterpenoid compound primarily derived from the fungus Poria cocos, used in traditional Chinese and Japanese medicine. It exhibits strong anti-inflammatory and antioxidant properties, beneficial for treating arthritis and other inflammatory conditions. Research highlights its neuroprotective effects, potentially aiding in the management of neurodegenerative diseases like Alzheimer's. It also shows hepatoprotective potential by safeguarding liver cells from toxin-induced damage and is incorporated into supplements to support immune function and reduce inflammation. Additionally, pachymic acid has anti-cancer properties, inhibiting the growth of certain cancer cells, and is explored in skincare formulations for soothing, anti-aging, and skin repair effects. Overall, it promises applications in therapeutics, nutraceuticals, and cosmetics.