Bilberry is traditionally used for bladder support due to its purported diuretic, antiseptic, and anti-inflammatory properties, though scientific evidence for these uses is limited. It's rich in antioxidants like anthocyanins, which may support connective tissue health and blood flow, potentially benefiting bladder function indirectly. However, more research is needed to confirm its effectiveness, especially for urinary tract infections (UTIs), which are often more strongly linked to cranberry supplements.