Cassia fistula, also known as the golden shower tree or "Amaltas" in Ayurveda, has a long-standing traditional use in various systems of medicine, particularly in South Asia. In traditional Ayurvedic texts, Cassia fistula is primarily described as a purgative, used to relieve constipation, and as a general detoxifying herb. There are scattered references in ethnomedicine to its use for "biliary disorders" or "liver cleansing," but these are vague and non-specific. The rationale for its use in gallstone support appears to stem from its ability to promote bowel movements and perhaps influence bile flow indirectly, which some traditional practitioners believe could help "flush" the biliary system. However, these traditional uses are not specific to gallstones, and there is no detailed description in classical texts about Cassia fistula directly dissolving or removing gallstones.

Regarding scientific validation, no robust clinical trials or preclinical studies directly support the use of Cassia fistula for the treatment or prevention of gallstones. The available research focuses more on its laxative, antimicrobial, and antioxidant properties. Therefore, the evidence for its use in gallstone management is extremely limited and is best characterized as anecdotal or speculative, rooted in traditional medicine rather than scientific validation.