Hydrangea arborescens has which therapeutic actions and indications?

• A. Hydrangea arborescens — Diuretic, antilithic, anti-inflammatory, urinary demulcent; kidney stones, UTIs, prostate conditions
• B. Hydrastis canadensis — Antimicrobial, anti-inflammatory, astringent
• C. Ginkgo biloba — Circulatory stimulant, antioxidant, nootropic
• D. Geranium maculatum — Astringent, anti-inflammatory

Answer: (A)

Hydrangea arborescens is used because it has a combination of actions that support urinary tract health: it acts as a diuretic to promote urine flow, has anti-lithic (stone-dissolving or stone-preventing) properties, provides anti-inflammatory relief, and serves as a urinary demulcent to soothe irritated mucosa. Together, these effects make it a traditional choice for kidney stones, urinary tract infections, and prostate conditions where inflammation and mucosal irritation are involved. The other herbs listed have different primary roles—one is mainly antimicrobial and astringent, another focuses on circulation and cognition, and the last on general astringency and inflammation—so they don’t align with hydrangea arborescens’ urinary-focused actions.