Synopsis

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

Capsaicinoids, primarily found in chili peppers, have a long history of traditional use for relieving bronchial congestion. In various cultures, spicy foods and preparations containing capsaicin have been consumed to "clear the sinuses" or alleviate chest congestion. The sensation of heat and irritation caused by capsaicinoids can stimulate mucus secretion and may temporarily relieve nasal and bronchial congestion by thinning mucus and promoting its expulsion. However, the scientific evidence supporting this effect is limited. Some small studies and anecdotal reports suggest that capsaicin can induce a runny nose (rhinorrhea) and may transiently improve symptoms of congestion. The mechanism is believed to involve the stimulation of sensory nerves and subsequent increased secretions.

Despite these traditional uses, clinical trials specifically evaluating capsaicinoids for bronchial congestion are scarce, and most evidence is indirect or extrapolated from their effects on the nasal passages. Additionally, the irritation caused by capsaicin may not be tolerable for all individuals and could exacerbate symptoms in sensitive people. Overall, while capsaicinoids are traditionally used for this purpose and have some plausible physiological basis, robust scientific validation is lacking.

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