Hoan Ngoc Tea is produced from the roots and leaves of Hoan Ngoc - Pseuderanthemum Palatiferum (Wall.) Radlk., belongs to the Acanthaceae family. Hoan Ngoc plant is capable of prevent and cure 25 diseases for human.
Vinh Tien Gohyah Tea, also known as Bitter Gourd Tea or Momordica chinensis is good for bile, liver, dieuretic. Gohyah tea can improve the glucose tolerance. Researches in year 2000 confirmed a healing effect of cancer.