Efficacy and Effects of Evodiae Fructus

Evodia fruit (Evodiae Fructus) is a traditional Chinese medicinal herb characterized by its bitter and warm nature. It primarily enters the Liver and Stomach meridians, and its main therapeutic actions include warming the interior to alleviate pain, regulating Qi flow, and drying dampness. It effectively dispels cold to relieve pain and suppresses upward-rebellious Qi to stop vomiting. It is commonly used to treat conditions such as headache or epigastric pain resulting from deficiency-cold in the Liver and Stomach, or upward invasion of yin-cold turbidity. Below, we detail the specific pharmacological effects and clinical applications of Evodia fruit.

Pharmacological Effects and Clinical Applications of Evodia Fruit

1. Expelling Cold and Alleviating Pain

Evodia fruit possesses a pungent taste and warm nature, making it suitable for treating various symptoms—including headache, abdominal pain, and dysmenorrhea—caused by cold invading the meridians. When decocted with ginseng and ginger, it helps alleviate dizziness and headache induced by wind-cold.

2. Reinforcing Yang and Arresting Diarrhea

Due to its bitter and drying properties, Evodia fruit dries dampness and reinforces Yang, thereby treating diarrhea. Combined with Psoralea fruit (Psoraleae Fructus), nutmeg (Myristicae Semen), and Schisandra fruit (Schisandrae Fructus), it exerts synergistic effects to warm the Spleen, tonify the Kidney, reinforce Yang, and arrest diarrhea.

3. Suppressing Vomiting

Evodia fruit is indicated for vomiting due to cold in the Stomach. Its actions include warming the interior, dispelling cold, and suppressing upward-rebellious Qi to stop vomiting. For vomiting caused by external cold invading internally and impairing Stomach Qi descent, it is commonly combined with pinellia tuber (Pinelliae Rhizoma) and ginger (Zingiberis Rhizoma). It is also frequently paired with Coptis rhizome (Coptidis Rhizoma)—a herb that clears stomach heat—to treat vomiting due to stomach heat or liver constraint transforming into fire.

4. Hypotensive and Gastric-Stimulating Effects

Scientific experiments demonstrate that Evodia fruit induces peripheral vasodilation and reduces peripheral vascular resistance, thereby exerting a hypotensive effect. Evodiamine—a bitter compound present in Evodia fruit—exerts gastric-stimulating (appetite-enhancing) effects via its bitter taste.

5. Analgesic Effect

Evodia fruit contains evodiamine and rutaecarpine. Both evodiamine and evodiol possess analgesic properties and enhance central nervous system activity.

The above outlines the primary pharmacological effects and clinical applications of Evodia fruit. Additionally, ethanol extracts of Evodia fruit have demonstrated potent anthelmintic activity against swine roundworms (Ascaris suum) in vitro, and exhibit lethal effects on earthworms and leeches. We hope this information proves helpful to you.