Pharmacists use various mechanisms to control the release of drugs from a pill. For example, the pill may have a coating that is designed to be dissolved in a particular part of the digestive tract or after a certain amount of time.But this does not always work since the rate of passage through the body can vary, and some individuals have higher levels of digestive enzymes than others. So the electronics company Philips has come up with a remote-controlled pill with a cavity for carrying a drug which can be opened by a remote signal.
