One intriguing and renowned aspect of Wat Klong Ku Wiang is the herbal medicine known as "Ya Tom" or "herbal decoction". This traditional practice of brewing herbal remedies has been passed down for generations. Wat Klong Ku Wiang offers a variety of treatments, including remedies for menstrual pain, chills and fever, hot and cold fevers, blood nourishment, eye issues in children, and treatments for heatstroke. Additionally, they provide remedies for enhancing blood quality, conditions related to old age, lactation support, postnatal care, morning sickness, and overall body nourishment. These remedies have proven highly effective for various ailments, earning a remarkable reputation among the local community and beyond.