Abstract: A stabilized oral pharmaceutical bead dosage form of sodium iodide I-131 is described. The sodium iodide I-131 is dissolved in a polymer film and the polymer film is applied by conventional coating technology which affixes the sodium iodide I-131 to inert substrate beads. The film also stabilizes the sodium iodide I-131 from chemical degradation.The utility of the bead dosage form is that it provides a decreased radiation hazard over that of handling a sodium iodide I-131 liquid. At the time of manufacture a specified amount of sodium iodide I-131 is applied to the substrate beads. The sodium idoide I-131 containing beads are then stored appropriately until dispensed by the pharmacist or physician. The key advantage of this system is that dispensing flexibility is maintained because as the sodium iodide I-131 undergoes radioactive decay the pharmacist or physician can compensate for the loss by dispensing a larger quantity of the coated beads to constitute the prescribed sodium iodide I-131 dose.