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Spicy foods can clear up mucus.
Spicy foods can clear up mucus.

Hot and spicy foods are notorious for making your nose run and your eyes water. The hot stuff in peppers is called capsaicin and is pharmacologically similar to guaifenesin, an expectorant found in some over-the-counter cough syrups. This similarity leads some experts to believe that eating hot foods can clear up mucus and ease that stuffy nose.