Medicaments and methods for treating cancer

A method of treating neuroendocrine cancer, comprising administering to a patient in need thereof, a pharmaceutical unit dosage form comprising greater than about 500 mg of sodium trans-[tetrachlorobis(1H-indazole)ruthenate (III)]and is substantially free of indazolium hydrochloride wherein the dosage form is administered to the patient intravenously on a dosing schedule of once a week.