Lodhtree (Symplocos racemosa) is primarily used in traditional Ayurvedic medicine, and there is limited scientific evidence supporting its use for edema. In Ayurveda, Lodhtree bark is valued for its astringent and anti-inflammatory properties, and it is traditionally prescribed for various gynecological and bleeding disorders, as well as for wound healing. Its use for edema (swelling due to fluid retention) is based on its reputed ability to help "dry" tissues and reduce excess fluid accumulation, likely attributed to its astringent tannin content and possible anti-inflammatory effects.

However, scientific validation for the effectiveness of Lodhtree specifically for treating or supporting edema is minimal. Most available research focuses on its antimicrobial, antioxidant, and anti-inflammatory properties, but these studies are generally not targeted at edema or fluid retention. Preclinical studies do suggest the bark contains compounds that may influence inflammation, which could have an indirect effect on swelling, but this is not directly studied in the context of clinical edema. As such, its use for this indication remains rooted in traditional practice rather than strong scientific endorsement.

In summary, Lodhtree's application for edema is traditional, with a modest level of historical support but little rigorous scientific backing to date.