Flu Relief Liquid Nasal congestion, sinus congestion and pressure, cough due to minor throat and bronchial irritation. For minor aches and pains, headache, fever, sore throat, reduces swelling of nasal passages. Temporarily restores freer breathing through the nose. Promotes nasal or sinus drainage and helps loosen phlegm (mucus). Thin bronchial secretions to rid the bronchial passageways of bothersome mucus and make coughs more productive.