This formula's own materials cite three specific, real external sources — worth checking each one directly rather than assuming what they cover.
A Healthline overview page on magnesium glycinate, a PubMed article on butcher's broom and circulatory support, and a PMC article covering curcuminoids research.
Linking to real, named sources rather than vague "studies show" language is worth crediting as a transparency signal — while still reading each source as general ingredient-level research, not a trial of this specific finished capsule.