Traditional Chinese Medicine, Explained with Evidence.

The phytochemical profile of fresh Zingiber officinale rhizome is dominated by gingerols (particularly 6-gingerol), shogaols, and volatile oils. Numerous studies have investigated ginger preparations for nausea and vomiting (including pregnancy-related, postoperative, and chemotherapy-induced), gastrointestinal motility, and anti-inflammatory effects. However, the majority of these studies evaluated standardized ginger extracts, powders, or isolated compounds — not fresh Sheng Jiang as a TCM medicinal material. Direct clinical evidence on fresh Sheng Jiang rhizome as a single agent remains limited.

Research on Poria cocos triterpenoids shows sedative and GABA-modulating activity in preclinical studies. Specific research on Fu Shen (Poria with pine root) is limited; most published data evaluate Poria cocos sclerotium without pine root.

Research on Platycladi Semen has identified fatty acids, saponins, and diterpenoids with sedative and cognitive-enhancing effects in preclinical models. Clinical evidence specific to Bai Zi Ren as a whole material is limited.

Longan aril polysaccharides and polyphenols demonstrate antioxidant, immunomodulatory, and neuroprotective effects in preclinical studies. Clinical research specific to Long Yan Rou is limited. Most neuropharmacological data come from longan fruit extracts rather than the medicinal aril.

Berberine, the main bioactive compound, demonstrates anti-inflammatory, antimicrobial, and intestinal barrier-protective effects. Systematic review confirms therapeutic potential for inflammatory bowel disease via multiple mechanisms including T-cell regulation and oxidative stress inhibition.

Gingerols and shogaols demonstrate gastroprotective, antiemetic, and prokinetic effects. Clinical studies support use for functional dyspepsia and nausea.