Synopsis

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

Cassia bark (Cinnamomum cassia), commonly referred to as Chinese cinnamon, has been used in traditional systems of medicine, particularly Traditional Chinese Medicine (TCM) and Ayurveda, to address digestive complaints such as acid indigestion, flatulence, and abdominal discomfort. The rationale for its use is based primarily on its warming properties and its believed ability to "harmonize the stomach" and stimulate digestion. Traditional texts often recommend cassia bark for conditions involving "coldness" or "stagnation" in the digestive tract, symptoms that may resemble modern concepts of indigestion or dyspepsia.

Scientific studies on cassia bark specifically for acid indigestion are limited. Some laboratory and animal studies have indicated that cassia and related cinnamon species may influence gastric motility, reduce gastrointestinal spasms, and possess anti-inflammatory properties, which could theoretically benefit indigestion. However, these effects have not been robustly demonstrated in human clinical trials focused on acid indigestion. Most available evidence is anecdotal or based on extrapolation from broader studies of cinnamon species. Thus, while there is a strong tradition of use, scientific validation remains limited, and cassia bark should not be considered a primary treatment for acid indigestion based on current evidence.

In summary, the use of cassia bark for acid indigestion is justified by a long history of traditional use, but scientific evidence is modest and primarily preclinical. Anyone considering its use should consult with a healthcare provider, especially due to potential side effects and interactions with medications.

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