Synopsis

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

Perilla (Perilla frutescens), also known as shiso, is a plant commonly used in traditional East Asian medicine, particularly in Chinese herbal medicine. In these systems, perilla leaves (called "Zi Su Ye" in Traditional Chinese Medicine, TCM) are regarded as having properties that help to "disperse cold," "regulate qi," and "relieve congestion" in the lungs. Historically, perilla has been included in formulas aimed at treating conditions characterized by cough, chest tightness, or mild bronchial congestion, especially when associated with cold or damp weather. The traditional use is based on empirical observations and the principles of TCM rather than modern biomedical understanding.

Modern scientific research on perilla's effects on lung congestion is limited. Some laboratory and animal studies suggest that perilla contains compounds with anti-inflammatory and anti-allergic properties, such as rosmarinic acid and luteolin, which could theoretically benefit respiratory health. However, these studies do not directly address lung congestion in humans, and robust clinical trials are lacking. Thus, while perilla is traditionally used for respiratory symptoms, including mild congestion, there is insufficient high-quality scientific evidence to support its efficacy for this specific purpose by Western medical standards.

In summary, perilla's use for lung congestion is primarily justified by traditional practices, with some preliminary but inconclusive scientific findings that do not yet provide strong validation.

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