Hulda Clark e's Zapper is a nine-volt appliance, and the Silver Pulser by Bob Beck is a 27-volt unit. The greatest common danger from electroporation is in the use of Garlic with the Beck Pulser, as the mild toxin naturally occuring in Garlic uptakes much too well with the 27-volt (low amp) Pulser.
The use of MSM and distilled water on the opposite end of the day from Pulsing or Zapping would tend to detox on a cellular level, and diminish any harmful effects from electroporation. I personally avoid Garlic and other strong spices while using the Beck Silver Pulser (unit pulses and has silver colloid jack, hence the name "Silver Pulser.") With medicinal herbs that don't have any particularly toxic alkaloids, and Burdock and other mineral-rich herbs would probably be in this category, I think, I would not tend to curb intake.
Me personally, I would have a hard time believing this electroporation effect would have been of much note to Clarke as I don't think that the Canadian populace she worked on would have had anywhere near the levels of industrial toxins which Americans are exposed to in this day and age. The tire particle levels alone have been skyrocketing in the last few years with the advent of SUV's. That's just my opinion. Off to take my MSM!