Evidence supporting the use of: Grass-leaved calamus
For the health condition: Sore Throat

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Synopsis

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

Grass-leaved calamus (commonly referring to Acorus gramineus or related species) has been used traditionally in certain herbal medicine systems to alleviate symptoms of sore throat. The use is primarily recorded in traditional Chinese medicine (TCM) and various folk remedies, where preparations of calamus root or extracts were gargled or ingested to soothe throat discomfort, likely due to its purported anti-inflammatory and analgesic effects. Historical texts and materia medica from these traditions mention calamus among formulations for throat ailments, but typically as part of complex mixtures rather than a primary remedy.

Scientific validation for this use is limited. While some studies on related species (Acorus calamus) indicate possible antimicrobial and anti-inflammatory effects in vitro, there is a lack of direct clinical evidence supporting the efficacy of Grass-leaved calamus for sore throat in humans. No high-quality randomized controlled trials have evaluated its effectiveness or safety for this specific indication, and pharmacological studies are sparse. As such, its use for sore throat remains largely rooted in tradition rather than modern scientific validation, and safety concerns (such as potential toxicity of certain calamus species) should also be considered.

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