Dr. Satien Yap, one of the most prominent herbalists in Thailand founded Ouay Un Dispensary in 1940s, initially as a herb shop in Thonburi district for promoting self care strategy and provide herbal recipes for some common ailments in the community.

Ouay Un Co., Ltd. established In 1984, is a customer-focused and a leader company in developing and marketing products that deliver a more natural approach to health, based on our expertise in medicinal herbs.


Herbal One Co., Ltd.commenced since 1999 staffed with highly trained, experienced pharmacists and herbalists, equipped with todays most advanced production process. Herbal One participates in the food and drug administration of Good Manufacturing Practices (GMP) certification program, and has received in GMP certificate. This program ensures that all elements of the manufacturing process are reviewed to provide assurance that safety and quality is built into products during manufacture.