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I've just stumbled across this article about magnetic pills. Scientists can hold such pills in a specific place in the body, pinpointing the most effective location for the body's absorption of the drug.
Some drugs can only be absorbed in specific parts of the intestine, and traditional oral pills don't usually stay in that one spot long enough to be absorbed into the bloodstream. The new drug delivery system uses an external magnet system with computer control and feedback mechanisms to monitor the amount of force on the magnetic capsule, holding it the ideal location for absorption.