Synopsis

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

Perilla (Perilla frutescens), sometimes found in proprietary blends such as "benegut perilla," has a long history of use in traditional Asian medicine, particularly in Traditional Chinese Medicine (TCM) and Kampo (Japanese herbal medicine). The leaves and seeds of perilla have been traditionally employed to support respiratory health, address cough, and relieve mild congestion. In TCM, perilla is categorized as having dispersing and warming properties, and is often used in formulas intended to "release the exterior," a concept referring to relieving symptoms of colds, flus, and mild bronchial congestion. While some laboratory and animal studies suggest perilla extracts may have anti-inflammatory, antiallergic, and bronchodilatory effects, these findings have not been robustly translated into large, high-quality clinical trials in humans for the treatment of lung congestion specifically. Most of the human evidence remains anecdotal or is based on traditional use rather than systematic research. Therefore, the justification for using perilla or proprietary blends like "benegut perilla" for lung congestion is grounded primarily in traditional practices rather than strong scientific validation. The evidence rating is moderate (2/5) due to the extensive historical use and some preliminary pharmacological studies, but the lack of direct clinical trials for this indication limits the strength of the recommendation.

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