Conclusion: Cassia fistula may be considered as a remedy for various clinical conditions like anorexia, confusion, constipation, coryza, earache, fever, headache, lethargy, nasal obstruction, pain in abdomen, sneezing, sleeplessness, stiffness of joints, arthritis, cervical pain, tonsillitis and weakness etc. Bright yellow, fragrant, produced in long pendulous clusters, 30 - 50 cm in length, attractive to insects and butterflies. Cassia cinnamon is possibly unsafe when taken in doses larger than 6 grams daily for a long period of time. Cassia cinnamon contains a chemical called coumarin. Taking large amounts of coumarin can cause liver damage in some people, especially those who have liver disease. Cassia fistula, also known as golden shower, purging cassia, Indian laburnum, kani konna, or pudding-pipe tree, is a flowering plant in the family Fabaceae. The species is native to the Indian subcontinent and adjacent regions of Southeast Asia. It is the official state flower of Kerala state and Delhi UT in India.