What are the efficacy and effects of Evodia rutaecarpa?
Evodia fruit (Wu Zhu Yu) has a pungent and bitter taste, is hot in nature, and enters the liver, spleen, stomach, and kidney meridians. It is a commonly used traditional Chinese herb that generally possesses effects such as killing parasites and relieving itching, supporting yang and stopping diarrhea, dispersing cold and alleviating pain, antibacterial and anti-inflammatory actions, and improving digestion. Specific details are analyzed as follows:
1. Killing Parasites and Relieving Itching
Evodia fruit has the effect of killing parasites and relieving itching, and can be used to treat skin conditions such as eczema and genital itching.
2. Supporting Yang and Stopping Diarrhea
Evodia fruit is pungent and hot in nature, entering the spleen and kidney meridians. It warms the spleen, benefits the kidneys, and strengthens the yang of both organs, thereby achieving the purpose of supporting yang and stopping diarrhea. For patients suffering from spleen-kidney yang deficiency or "five-o'clock diarrhea" (chronic diarrhea occurring early in the morning), Evodia fruit may be taken for regulation and treatment.

3. Dispersing Cold and Alleviating Pain
With its hot nature and pungent flavor, Evodia fruit effectively disperses cold and relieves pain. Clinically, it can help alleviate abdominal pain, dysmenorrhea, and cold hernia-related abdominal pain caused by stagnation due to cold.
4. Antibacterial and Anti-inflammatory Effects
Evodia fruit exhibits certain antibacterial and anti-inflammatory properties, showing inhibitory effects against various bacteria and pathogenic microorganisms.
5. Improving Digestion
Evodia fruit typically promotes gastric juice secretion and gastrointestinal motility, aiding food digestion and helping relieve digestive issues such as indigestion, stomach bloating, and poor appetite.
It should be noted that Evodia fruit must be used under the guidance of a physician. Self-medication without professional advice should be avoided to prevent potential harm to health.