Ophiopogon japonicus is sweet, slightly bitter, slightly cold, enters the heart, lungs and stomach meridians, and has the effects of nourishing yin and benefiting the stomach, moistening the lungs and clearing the heart. Can be used for treating body fluid injury caused by heat, dry throat and thirst, red tongue and dry stool. It is often combined with other herbs for nourishing yin and promoting fluid production to moisten dryness, quench thirst and moisten intestines to relieve constipation. Ophiopogon japonicus soaked in water can be used for yin deficiency and lung dryness, bad cough and bad throat. Ophiopogon japonicus soaked in water can treat heart-yin deficiency, restlessness and palpitation. Ophiopogon japonicus, boat-fruited Sterculia, honeysuckle, gardenia and loquat leaves can usually be soaked in water instead of tea to treat chronic pharyngitis.