Grosvenor Momordica Fruit Classic Formulas … Natural Herb Library

Primary Actions

Clears Lung heat and moistens dryness - Luo Han Guo is used for dry cough, hoarseness, smoker's throat, whooping-style cough, and sore throat when heat and dryness injure the upper burner.
Transforms phlegm and relieves cough - it is especially appropriate when sweet cooling moisture is needed for sticky phlegm-fire or heat-dryness patterns.
Moistens the intestines and unblocks the bowels - traditional use extends to dry constipation or hard stool caused by fluid depletion.

Luo Han Guo tea - the simplest and most common preparation for dry throat, hoarseness, and heat-dryness cough.
Luo Han Guo with Pang Da Hai and Mai Men Dong - a moistening pairing for strained voice, parched throat, and stubborn dry heat in the upper burner.
Luo Han Guo with Chuan Bei Mu - a classic cough-support combination when phlegm and dryness coexist.

TCM Wiki describes Luo Han Guo as sweet and cool, clearing Lung heat and moistening the intestines for cough due to phlegm-fire and constipation due to dryness.
Me & Qi emphasizes its Lung and Large Intestine channel actions, food-medicine dual status, and suitability for dry hot respiratory patterns rather than cold cough.
Chinese government classification as a medicine-food dual-use substance helps explain why Luo Han Guo remains common in both folk tea use and formal materia medica.