Panax ginseng, commonly known as Asian ginseng, Korean ginseng, or Chinese ginseng, is a slow-growing, perennial herbaceous plant in the family Araliaceae. It is native to the cool, shaded mountain forests of eastern Asia, historically spanning parts of northeastern China, the Korean Peninsula, and eastern Russia. The genus name Panax is derived from the Greek words pan ("all") and akos ("cure"), essentially meaning "all-heal"—a testament to its legendary status in ancient medical systems. The species epithet ginseng is derived from the Chinese rénshēn, which translates literally to "man-root," referencing the plant's thick, fleshy, and often anthropomorphic root system. Historically, wild ginseng has been one of the most highly prized and expensive commodities in traditional Asian trade, frequently worth its weight in gold.

The plant typically reaches a height of 30 to 60 centimeters, featuring a single, slender stem that terminates in a whorl of five-fingered, palmate leaves. It produces small, greenish-yellow flowers clustered in an umbel, followed by bright red, berry-like drupes. The most valuable part of the plant—the root—is thick, branched, and takes anywhere from five to ten years to reach a size suitable for harvest in the wild. Because wild P. ginseng is critically endangered due to historical over-harvesting, the vast majority of modern consumption comes from cultivated sources, where the plants are grown under specialized, artificial shade structures to mimic the dappled light of the forest floor.

Panax ginseng is not typically eaten as a meal, but is consumed as a potent functional ingredient. It is classified into two primary commercial forms based on processing: white ginseng (peeled and sun-dried) and red ginseng (steamed and dried), with the latter being more prized for its enhanced therapeutic stability. In East Asian culinary traditions, the root is slowly simmered for hours in restorative soups, such as samgyetang (ginseng chicken soup), or brewed into herbal teas and alcohol-based tonics to promote vitality, combat fatigue, and support recovery. In the global wellness market, it is ubiquitously processed into extracts, capsules, and energy-enhancing powders.

Nutritionally and pharmacologically, Panax ginseng is distinguished by its unique class of secondary metabolites known as ginsenosides (or panaxosides). These are triterpenoid saponins that act as "adaptogens," meaning they are believed to help the body resist physiological and psychological stress by balancing the hypothalamus-pituitary-adrenal axis. Beyond ginsenosides, the root contains a complex profile of polysaccharides, polyacetylenes, and phenolic compounds. Traditional and modern research has explored its potential to boost cognitive function, modulate immune response, and improve physical stamina. Because of its stimulating nature, it is often avoided by those with hypertension or individuals currently taking specific stimulant medications.