Evidence supporting the use of: Sharp-leaf galangal
For the health condition: Belching

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Synopsis

Source of validity: Traditional
Rating (out of 5): 2

Sharp-leaf galangal (Alpinia officinarum) has a long-standing history of use in traditional medicine systems, particularly in Southeast Asia and China, for various digestive complaints, including belching (also known as eructation). In Traditional Chinese Medicine (TCM), sharp-leaf galangal—often referred to as Gao Liang Jiang—is used to “warm the middle,” dispel cold, and relieve symptoms like stomach pain, bloating, and belching. Its aromatic rhizome is believed to stimulate digestion and promote the movement of qi (energy), thereby reducing gastrointestinal discomfort such as belching.

However, while historical and ethnomedical texts document these uses, there is very limited scientific research specifically examining the efficacy of sharp-leaf galangal for treating belching. Most modern studies focus on its anti-inflammatory, antioxidant, and antimicrobial properties, or its effects in broader gastrointestinal contexts (e.g., anti-ulcer or prokinetic effects). Direct clinical trials or mechanistic studies targeting belching are lacking. Thus, the justification for its use in belching comes primarily from traditional sources, with little direct scientific validation. The evidence rating is 2, reflecting the strength of the traditional use but the absence of robust clinical data.

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