028 Clerodendrum inerme – Glory Bower

เถาวัลย์เปรียง (Thao Wan Priang)

Family: Lamiaceae

Clerodendrum inerme, commonly known as Glory Bower or Thao Wan Priang in Thai, is a woody shrub widely used in traditional Thai medicine for the treatment of muscle pain, joint stiffness, and inflammation. The plant’s roots and stems are typically boiled to prepare healing decoctions, making it a cornerstone of Thai herbal remedies for musculoskeletal conditions.

Botanical Characteristics

This perennial shrub grows 1–3 meters tall, with slender, woody stems and opposite, oval-shaped leaves. The small, white, tubular flowers have a faint fragrance and attract pollinators such as butterflies. It thrives in sunny or partially shaded tropical environments and tolerates salt exposure, often growing naturally along coastal areas.

Use in Thai Traditional Medicine

In Thai traditional medicine, เถาวัลย์เปรียง is valued as a natural muscle relaxant and anti-inflammatory agent. The dried roots and stems are boiled to create herbal teas or compress infusions used for back pain, arthritis, and tendon inflammation. The decoction is also taken after physical labor or exercise to ease soreness and improve flexibility. It is often blended with other herbs such as turmeric or lemongrass to enhance circulation and relieve tension.

Cultivation Notes

Clerodendrum inerme is hardy and adaptable, preferring well-drained soil and moderate watering. It responds well to pruning, which promotes dense growth. In the KBE Thai Medicinal Herb Garden, it is maintained as a structural shrub species, representing the traditional use of Thai forest plants in natural pain management.

Historical Context

Historically, เถาวัลย์เปรียง was prescribed by Thai herbalists as a remedy for “body wind” imbalance—conditions linked to joint stiffness and restricted movement. It was also used by Thai boxers and soldiers to restore flexibility after intense physical activity. Today, its extracts remain a key ingredient in modern Thai herbal balms and pain-relief formulations.


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.

Clerodendrum inerme – Glory Bower (เถาวัลย์เปรียง), Thai medicinal shrub with opposite green leaves and woody stems used in herbal pain remedies.