Can Ophiopogon japonicus (McDoor) reduce stomach fire?

Generally, Ophiopogon japonicus (McDoor) can reduce stomach fire, but it should be used under the guidance of a professional traditional Chinese medicine (TCM) practitioner according to individual constitution. Detailed analysis is as follows:

Ophiopogon japonicus is slightly cold in nature, sweet in taste, and enters the heart, lung, and stomach meridians. It has functions of nourishing yin, promoting body fluid production, moistening the lungs, and clearing the heart. If the stomach heat symptoms are caused by insufficient stomach yin, such as dry mouth and throat, stomach pain accompanied by a burning sensation, taking an appropriate amount of Ophiopogon japonicus or decocting it with other herbs may help nourish yin and reduce internal heat, thus alleviating symptoms of stomach heat.

However, differences in individual constitutions and medical conditions exist. For patients with dysfunction of the spleen and stomach transformation and transportation functions, using Ophiopogon japonicus alone or improper usage might impair the yang energy of the spleen and stomach, worsening symptoms of spleen-stomach deficiency cold, such as abdominal pain and diarrhea. Therefore, before using Ophiopogon japonicus, TCM syndrome differentiation and treatment should be performed by a TCM practitioner to ensure safe and effective medication use.

During the period of taking Ophiopogon japonicus, it is recommended to maintain a bland diet and avoid spicy and stimulating foods, such as pepper and ginger, to prevent interference with the herb's effectiveness.