The Efficacy, Function, and Indications of Cyperus rotundus
Generally speaking, Cyperus rotundus (nutgrass) has various functions and effects such as soothing the liver and relieving depression, regulating menstruation and alleviating pain, strengthening the heart and lowering blood pressure, killing bacteria and reducing inflammation, and regulating qi to relieve abdominal fullness. It is primarily used for treating conditions such as the following. Specific details are as follows:

1. Soothe the liver and relieve depression: Cyperus rotundus can soothe the liver, relieve depression, calm the mind, and alleviate symptoms such as liver qi stagnation and emotional distress caused by mental irritability. It helps regulate liver function and improve symptoms such as distension and pain in the hypochondrium and chest tightness caused by stagnation of liver qi.
2. Regulate menstruation and alleviate pain: With its pungent flavor, Cyperus rotundus is applicable for menstrual irregularities and lower abdominal distension and pain caused by liver qi stagnation. It can inhibit uterine contractions and reduce uterine tension, thereby alleviating menstrual discomfort and dysmenorrhea. Additionally, Cyperus rotundus regulates the endocrine system and improves gynecological symptoms such as menstrual irregularities.
3. Strengthen the heart and lower blood pressure: Cyperus rotundus contains alkaloids, flavonoids, glycosides, phenolic compounds, and other substances. These components help enhance cardiac function, lower blood pressure, and slow heart rate. Therefore, for patients with cardiovascular diseases, appropriate use of Cyperus rotundus may offer certain adjunctive therapeutic benefits.
4. Kill bacteria and reduce inflammation: Cyperus rotundus inhibits fungal growth and demonstrates certain inhibitory effects against bacteria such as Staphylococcus aureus and Shigella sonnei. This gives Cyperus rotundus some application value in treating skin and intestinal infections.
5. Regulate qi and relieve abdominal fullness: Cyperus rotundus also helps regulate qi and relieve abdominal distension. It can alleviate symptoms such as indigestion and epigastric pain and distension. It promotes gastrointestinal motility and improves digestive function, thus relieving gastrointestinal discomfort.
Spicy and irritating foods should be avoided during medication, as they may interfere with the drug's effectiveness.