Synopsis

Source of validity: Traditional
Rating (out of 5): 1

Tonka bean (Dipteryx odorata) has been employed in traditional medicine in various cultures, including South America, for a range of ailments, including respiratory issues such as coughs. The use of tonka bean for dry cough is primarily rooted in traditional herbal practices, where it was sometimes used as an ingredient in cough syrups or infusions. The purported benefit is often attributed to its aromatic compounds, especially coumarin, which imparts a vanilla-like scent and flavor and was believed to have soothing properties for the throat and respiratory tract.

However, there is little to no robust scientific evidence supporting the efficacy of tonka bean for treating dry cough. Modern clinical studies are lacking, and most references to its use are anecdotal or based on historical herbal texts. Additionally, coumarin, the main active compound in tonka bean, is known to be hepatotoxic in high doses and is restricted in food products in several countries, including the United States. Safety concerns further limit its recommendation as a remedy for cough in contemporary practice. In summary, the use of tonka bean for dry cough is based on traditional practices, with minimal supporting scientific evidence and notable safety concerns.

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