I'm sorry i have no answer for you regarding zapping. I want to start zapping to but dont know where to start :). dont know even what zappper to try. my logic says yes to the zapping the liver if you feel parasites in the liver ( like I do). but if you dont feel them there and I would say dont.
herbs reach the liver? my experience with what i've been taking is NO they dont. thats why they are hidding in the gallbladder and liver cause the herbs wont hurt them. when i started the cleanse with herbs and reducing carbs - the pain in the gallblader and liver starts. and when i eat i feel like my gallbladder is finally free - after 1 hour pains begins again. if i'm eating carbs or even sugar - i feel my liver and GB very free.
i've been taking wormwood, black walnut, goldenseal. maybe other herbs reach the liver and work sistemicly. I'm trying to think - 'ive read somebody took a tincture by putting it undertongue- shortway to the liver. or other person had an enema with some - and trhough some blood vessels from there reach quicly the liver. here some recommends to drink tea and stay on the right side.
What i can tell you is colonics was a big deal for me 1 year ago regarding the liver. Colonics and probiotics togheter with a lot of vit.C for detox.
Sorry i wanted to help more :) but keep posting - other people might help.