Detailed Product Description Christina Loosestrife is the dried herb of Lysimachia christinae Hance (Fam. Primulaceae). Action: To remove damp-heat, relieve dysuria, and to promote subsidence of swelling.Indications: Acute urinary infection or urolithiasis with difficult painful urination; jaundice with dark urine, hepatic or biliary calculus; carbuncles, sores, venomous snake bite.