Synopsis

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

Calamus rhizome (Acorus calamus), also known as Sweet Flag, has been traditionally used in various systems of medicine, particularly Ayurveda, Traditional Chinese Medicine (TCM), and Unani, to support digestion and stimulate appetite in individuals with deficient appetite or digestive weakness. Historical texts and herbal materia medica describe Calamus as a "digestive tonic" and "stomachic," used to alleviate symptoms such as loss of appetite, bloating, and sluggish digestion. In Ayurveda, it is known as "Vacha" and reputed to kindle the digestive fire ("agni"), which is believed to be essential for proper digestion and appetite.

Scientific validation for these effects is limited and not robust. Some laboratory studies have explored the effects of Calamus extracts on digestive enzymes and gastrointestinal motility in animal models, suggesting possible mechanisms for appetite stimulation, but these studies are preliminary and do not constitute strong clinical evidence. The primary support for Calamus rhizome’s use in appetite stimulation remains traditional and historical rather than scientifically substantiated through controlled human trials.

It is important to note that Calamus contains β-asarone, a compound associated with toxicity concerns, especially in some chemotypes, which limits its use in modern herbal practice. Regulatory agencies in some countries restrict Calamus supplements for this reason. Always consult a healthcare professional before use.

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