Synopsis

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

Calamus (Acorus calamus), also known as sweet flag, has a long history of use in traditional medicine systems such as Ayurveda and Traditional Chinese Medicine (TCM). In these traditions, calamus is often employed to support the senses, particularly in formulations aimed at enhancing cognitive function, improving clarity, and supporting the nervous system. Ayurvedic texts describe calamus as a "medhya rasayana," a category of herbs believed to enhance intellect and sensory acuity. Additionally, it has been used for conditions like vertigo, tinnitus, and other sensory disturbances. However, clinical evidence supporting these uses is limited. Scientific studies on calamus have mainly focused on its anti-inflammatory, neuroprotective, and antioxidant properties in vitro and in animal models. These studies suggest possible benefits on the central nervous system, but robust human data are lacking. Importantly, some constituents of calamus, such as β-asarone, have been associated with toxicity in animal studies, and its use is restricted in some countries. Therefore, while traditional evidence exists for using calamus to support the senses, scientific validation is minimal, and safety concerns remain. Clinical use should be approached with caution.

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