Evidence supporting the use of: Cyperus rotundus
For the health condition: Belching

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Synopsis

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

Cyperus rotundus (commonly known as nutgrass or purple nutsedge) has a long history of use in traditional medicine systems such as Ayurveda, Traditional Chinese Medicine (TCM), and Unani. In these traditions, it is often employed for various gastrointestinal complaints, including bloating, indigestion, and specifically for relieving symptoms like belching. The rationale is based on its reputed carminative, stomachic, and digestive properties, which are believed to help regulate digestive function and expel excess gas from the gastrointestinal tract. Ancient Ayurvedic texts, for example, mention its use for 'Ajeerna' (indigestion) and 'Adhmana' (abdominal distension with belching).

However, modern scientific evidence directly supporting the use of Cyperus rotundus for belching is limited. Some studies have demonstrated that extracts of the rhizome can have antispasmodic and gastroprotective effects in animal models, and may influence gut motility, which could tangentially relate to symptoms such as belching. There are also in vitro reports of its ability to modulate certain digestive enzymes and reduce flatulence. Nonetheless, these studies do not specifically assess belching as an outcome, and robust clinical trials in humans are lacking.

In summary, the use of Cyperus rotundus to support or treat belching is primarily justified by traditional practices, with only modest indirect scientific support. The overall evidence level for this indication remains low.

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