Pogostemon has no role in treating bad breath. Pogostemon is used to treat the symptoms of dampness and obstruction, epigastric congestion and vomiting, and summer-dampness epiglottis. Patchouli is pungent in flavor and slightly warm in nature. It belongs to the spleen, stomach and lung meridians. It has the efficacy of aromatizing turbidity, harmonizing and stopping vomiting, and relieving summer heat. Used for dampness and warmth (feeling dampness and heat caused by warm disease) at the beginning, fever and tiredness, chest tightness, cold and dampness closed summer, abdominal pain, vomiting and diarrhea, nasal abyss (mainly manifested as filthy nasal mucus, the amount of wipe unclean), headache and so on. Among them, patchouli treatment of dampness in the obstruction caused by vomiting, often with half-summer, cloves, etc.; if biased in the damp-heat, with Huanglian, bamboo, etc.; vomiting in pregnancy, with sand nuts, Su terrier, etc.; spleen and stomach weakness, with ginseng, white atractylodes, etc.. In summary, patchouli can not treat bad breath. It is recommended that patients with bad breath go to the internal medicine department of traditional Chinese medicine and stomatology department of the hospital to get treatment for the cause of the disease. If you need to take patchouli, it is recommended to follow the doctor’s instructions.