Evidence supporting the use of: Cinnamic aldehyde
For the health condition: Cough (spastic)

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Synopsis

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

Cinnamic aldehyde, the principal component of cinnamon oil, has been traditionally used in various systems of medicine, including Traditional Chinese Medicine (TCM) and Ayurveda, for the treatment of coughs and respiratory ailments, including spastic or irritating coughs. Historical texts and ethnobotanical surveys indicate that cinnamon bark (from which cinnamic aldehyde is derived) has been a popular remedy for respiratory symptoms, often administered as teas, tinctures, or syrups. The mechanism purported by traditional use involves its warming properties, ability to improve circulation, and possible expectorant effects, helping to soothe the throat and alleviate coughing fits.

However, while cinnamic aldehyde displays antimicrobial, anti-inflammatory, and mild bronchodilatory properties in laboratory studies, direct clinical evidence supporting its efficacy for spastic cough in humans is lacking. Most contemporary scientific studies focus on its general antimicrobial and anti-inflammatory actions rather than specific antitussive (cough-suppressing) effects. As such, the use of cinnamic aldehyde for cough remains primarily rooted in traditional practices, and current scientific validation is minimal. The rating of 2 reflects that, while tradition is well documented, only preliminary pharmacological mechanisms exist, with limited or no direct clinical trial evidence for this indication.

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