Synopsis

Source of validity: Traditional
Rating (out of 5): 2

Guelder rose (Viburnum opulus) has a long history of use in traditional herbal medicine, particularly in Europe and North America. The bark, commonly referred to as "cramp bark," has been traditionally used as an antispasmodic remedy for muscle cramps, menstrual pain, and occasionally for urinary tract complaints. In folk medicine, it has been employed to relieve bladder discomfort and urinary spasms, particularly in the context of irritable bladder or mild urinary tract irritation. This use is primarily anecdotal and based on its general muscle-relaxant properties rather than direct action on the bladder itself.

Despite its traditional reputation, there is a lack of rigorous scientific studies specifically validating guelder rose’s effectiveness for supporting bladder health or treating bladder-specific conditions. Most of the available research and literature focuses on its antispasmodic effects, which are attributed to constituents such as coumarins and flavonoids. These compounds may help relax smooth muscle tissue, potentially providing symptomatic relief for bladder spasms. However, there is insufficient clinical evidence to directly link guelder rose to significant improvements in bladder health.

In summary, the use of guelder rose for supporting the bladder is justified primarily by traditional use, with modest indirect support from its general antispasmodic actions. The evidence for its efficacy in this context is limited, and more research would be required for a higher evidence rating.

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