I have the same revolting problem... and have been taking spoonfuls of those herbs daily - however I also have GERD which reacts to garlic so I can't seem to tolerate the garlic.. it seems to let more "stuff up" by weakening the oesophogeal sphincter like larvae! YUK :( :(
Check Geritol's posts here... He was able to herd worms out of his neck/head region using a TENS machine. It works.... but it takes a lot of perseverance. I have tried it for "relief" but they still keep coming back.
My guess its that they are trying to escape treatment. I wish they'd just jump out of my mouth and be done with it!
Its the worst feeling having a worm swim up your oesphogus for food!