Diagnostic and therapeutic capsules and method of producing

An article of manufacture comprising, a pharmaceutical capsule formed essentially of a nontoxic, water soluble material adapted to being ingested and rapidly disintegrating on contact with fluids of the gastro-intestinal tract and a polyethylene glycol filler material having a pharmaceutically useful radioactive iodine and a reducing agent dispersed therein, said capsule having a central axis and an inner surface, said inner surface defining a volume within said capsule, said filler material being supported by said inner surface of said capsule,

• a major portion of said volume within said capsule containing said filler material, said filler material having a shape which is coextensive with the inner surface of said capsule, said filler material extending radially across the central axis of said capsule, said filler material containing a major portion of said radioactive iodine within the interior of said filler material, whereby said major portion of said radioactive compound does not contact said inner surface of said capsule.