Patchouli for Chinese Herb Use

Patchouli Herb (Pogostemon cablin) – Guang Huo Xiang

Overview:
Guang Huo Xiang, known in English as Patchouli Herb, is the dried aerial part of Pogostemon cablin, a member of the mint family. In Traditional Chinese Medicine (TCM), it is highly valued for its ability to transform dampness, release the exterior, and harmonize the stomach. It is widely used in the treatment of digestive disorders, summer heat syndrome, and damp-related conditions.

Botanical Characteristics:
Pogostemon cablin is a fragrant herb with broad, hairy leaves and purplish stems. It grows primarily in southern China and tropical Asia. The medicinal part is typically harvested in summer and autumn, then dried for use in decoctions or formulas.

Traditional Uses in TCM:

• Transforms dampness and revives the spleen:
  Used to treat symptoms such as nausea, vomiting, loss of appetite, abdominal distension, and diarrhea caused by dampness obstructing the middle burner.

• Releases the exterior and dispels summer heat:
  Effective for early-stage wind-cold with dampness, especially common during humid summer months. Often used in conditions like summer flu or gastroenteritis.

• Stops vomiting and harmonizes the stomach:
  Commonly included in formulas for stomach flu, morning sickness, or food poisoning.

Pharmacological Properties:
Modern studies have shown that Pogostemon cablin has antibacterial, anti-inflammatory, antioxidant, antiemetic, and gastroprotective effects. The essential oils extracted from the plant (patchouli oil) also demonstrate significant activity against certain viruses and fungi, and are used in both traditional remedies and modern aromatherapy.

Preparation and Dosage:

• Commonly used in decoctions (6–10 grams) or powdered form.

• Often combined with herbs such as Ban Xia (Pinellia), Zi Su Ye (Perilla Leaf), and Bai Zhu (Atractylodes) in formulas like Huo Xiang Zheng Qi San.

Precautions:

• Should be used with caution in individuals with yin deficiency or dry heat.

• Not recommended for use without proper diagnosis in cases with heat signs without dampness.

• Consult a TCM practitioner for appropriate use during pregnancy or with concurrent medications.