ฟ้าทะลายโจร (Fah Talai Jone) / Green Chiretta
Family: Acanthaceae
Andrographis paniculata, commonly known as Green Chiretta or ฟ้าทะลายโจร (Fah Talai Jone), is one of the most important herbs in Thai traditional medicine. Revered for its strong bitter taste, it is widely used as a natural antibiotic, antiviral, and immune booster.
Botanical Characteristics
This annual herb grows 30–80 cm tall with slender, square stems and narrow, lance-shaped leaves. Small white flowers with purple markings bloom in branching clusters. The plant thrives in full sunlight and well-drained soil, making it easy to cultivate throughout Thailand.
Use in Thai Traditional Medicine
In Thai medicine, ฟ้าทะลายโจร is classified as a cooling herb (ยาเย็น). It is used to reduce fever, relieve sore throat, and combat bacterial and viral infections. The name literally means “heaven destroys evil,” referring to its effectiveness in clearing toxins and disease from the body.
Medicinal Properties and Modern Research
Modern studies have identified andrographolide as the main active compound, responsible for its anti-inflammatory, antiviral, and immune-modulating effects. During the COVID-19 pandemic, ฟ้าทะลายโจร gained renewed attention in Thailand for its potential in supporting recovery from mild infections.
Cultivation Notes
The plant prefers warm, tropical climates and can be grown easily from seed. It should be harvested before flowering for the highest medicinal potency. In the KBE Thai Medicinal Herb Garden, it is cultivated as part of the core immune-support collection.
Historical Context
Used for centuries across Asia, Green Chiretta appears in both Ayurvedic and Thai pharmacopeia. It embodies Thailand’s philosophy of healing through balance — purifying the body, cooling internal heat, and strengthening resistance to disease.
Disclaimer: This information is provided for educational and historical purposes only. It is not intended as medical advice. Always consult a qualified healthcare professional before using any herbal preparation.
