Synopsis

Source of validity: Scientific
Rating (out of 5): 3

Menthol oil, derived primarily from peppermint, is commonly used to support the bronchial (respiratory) system. Scientific evidence suggests that menthol acts as a mild bronchodilator and provides a sensation of easier breathing by activating cold-sensitive TRPM8 receptors in the airways, which produces a cooling effect and a subjective feeling of improved airflow. Clinical studies and reviews indicate that menthol can help reduce sensations of dyspnea (shortness of breath), and it is often included in over-the-counter inhalants, rubs, and lozenges for symptomatic relief of coughs and minor throat irritation. However, while menthol provides symptomatic relief, there is limited high-quality evidence that it directly improves bronchial function or treats underlying respiratory conditions such as asthma or chronic bronchitis. Regulatory bodies, such as the FDA, recognize menthol as a safe ingredient for use in topical preparations for cough relief, but not as a primary treatment for respiratory diseases. In summary, menthol’s use to support the bronchial system is supported by moderate scientific evidence for symptomatic relief, though it should not replace medically approved treatments for serious bronchial conditions.

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