Evidence supporting the use of: Sweet flag
For the health condition: Belching

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Synopsis

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

Sweet flag (Acorus calamus) has a long history of use in traditional medicine systems such as Ayurveda, Unani, and Traditional Chinese Medicine for a variety of digestive ailments, including belching (eructation), bloating, and indigestion. In these systems, sweet flag is often described as having carminative and stomachic properties, meaning it helps relieve gas and promote digestion. Ancient Ayurvedic texts mention its use to "pacify vata" and alleviate symptoms like belching and flatulence. The rhizome is typically prepared as a powder, infusion, or decoction and administered to soothe the gastrointestinal tract.

Modern scientific evidence supporting sweet flag’s efficacy for belching is limited. Some laboratory studies have demonstrated its antispasmodic and carminative effects, which may theoretically help reduce belching by decreasing gas and soothing intestinal spasms. However, these studies are mostly preclinical (in vitro or animal models), and robust clinical trials in humans are lacking. Furthermore, concerns about the safety of certain compounds in sweet flag, such as β-asarone, have limited its use in some countries.

In summary, sweet flag’s use for belching is primarily grounded in traditional medical systems, with some supporting pharmacological actions observed in laboratory settings, but lacking strong clinical evidence in humans.

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