Synopsis

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

Capsaicin, the active component in chili peppers, has a long history of traditional use in various cultures for managing symptoms of the common cold. Historically, spicy foods containing capsaicin have been consumed to provide a sensation of nasal decongestion, promote sweating, and potentially offer relief from sore throat and cough. The perceived benefits are largely attributed to its ability to stimulate mucous membranes, which can temporarily relieve nasal congestion by thinning mucus and promoting drainage. Additionally, the heat sensation may provide a subjective feeling of clearing the airways.

Scientifically, however, direct evidence supporting capsaicin for treating the underlying causes or duration of the common cold is limited. Most clinical data focus on capsaicin’s topical use for pain relief or its effects on chronic rhinitis and non-allergic nasal congestion, rather than acute viral infections like the cold. Some small studies suggest that capsaicin nasal sprays may reduce symptoms of non-allergic rhinitis, but these findings do not directly extend to cold viruses. Overall, while there is a strong tradition behind its use and some plausible symptomatic benefit, robust clinical trials validating capsaicin’s efficacy for colds specifically are lacking.

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