The use of Indian Coraltree (Erythrina variegata) for jaundice in adults is primarily justified by traditional medicine practices. In various ethnobotanical surveys and Ayurvedic texts, Indian Coraltree has been mentioned as a remedy for liver disorders, including jaundice. Traditional healers in parts of India and Southeast Asia have utilized preparations from the bark, leaves, or flowers of this plant to "cleanse" the liver or alleviate symptoms of jaundice, such as yellowing of the skin and eyes. However, the underlying rationale is rooted in empirical tradition rather than systematic clinical evaluation.

There is very limited scientific evidence supporting the efficacy of Indian Coraltree in treating jaundice. A few pharmacological studies on Erythrina variegata extracts have demonstrated hepatoprotective effects in animal models, such as protection against chemically-induced liver injury; these studies suggest possible antioxidant and membrane-stabilizing properties. However, these findings are preliminary, not specific to jaundice as a clinical syndrome, and have not been validated by controlled human studies. No high-quality clinical trials have evaluated its safety or effectiveness for jaundice in adults.

In summary, the use of Indian Coraltree for jaundice is supported by traditional use and some preliminary pharmacological data, but lacks robust scientific validation. Therefore, its evidence score is rated as 2.