This formula's own materials make a specific claim worth reading closely: rice flour, listed as an inactive binding ingredient, also "supports healthy blood flow as part of the capsule base."
Rice flour is named directly as an inactive, binding ingredient in the capsule base — with an additional, specific note attached about supporting healthy blood flow, distinct from the active ingredients' own stated roles.
Attaching a functional claim to an ingredient otherwise labeled as inactive is worth reading carefully — worth treating it as one specific, stated detail rather than assuming inactive ingredients never carry any functional description.