A system includes bio-medical units, a wireless communication module, and a wireless power source. A bio-medical unit includes a power harvesting module, a communication module, a processing module, and a medication control module for performing a medication control function and generating a medication response. The wireless communication module is operable to wirelessly communicate inbound and outbound wireless signals with the bio-medical unit. The wireless power source is operable to generate the electromagnetic signal, which the power harvesting module converts into a supply voltage that powers the other modules of the bio-medical unit.