Cassia fistula tree is one of the most widespread in the forests of India, usually occurring in deciduous forests. The whole plant possesses medicinal properties useful in the treatment of skin diseases, inflammatory diseases, rheumatism, anorexia and jaundice. Cassia fistula plants are used in folk remedies for tumors of the abdomen, glands, liver, stomach and throat cancer, carcinomata and impostumes of the uterus. It is a folk remedy for burns, cancer, constipation, convulsions, delirium, diarrhea, dysuria, epilepsy, gravel, hematuria, pimples and glandular tumors.
Ayurvedic medicine recognizes the seed as antibilious, aperitif carminative and laxative the root for adenopathy, burning sensations, leprosy, skin diseases, syphilis and tubercular glands the leaves for erysipelas, malaria, rheumatism and ulcers the buds for biliousness constipation, fever, leprosy and skin disease the fruit for abdominal pain, constipation, fever, heart disease and leprosy. Unani use the leaves for inflammation the flowers for a purgative the fruit as anti-inflammatory, antipyretic, abortifacient, demulcent, purgative, refrigerant good for chest complaints eye aliments, flu, heart and liver ailments and rheumatism, though suspected of inducing asthma. Seeds are considered emetic.