Before going on to Blood electrification, you might consider using a more effective zapper. While the ZP zapper appears to be OK for colds, flu, and other minor problems, it does not have the power drive that is needed for serious parasite problems.
>- do not wish to "zap" or, in fact, use any unnatural means of cleansing for the rest of my days
A good zapper will produce the needed results in a few days and should not be needed past a few weeks unless there are serious systemic problems or for occasional use to prevent re-infection.