I have done peppermintoil too, in England it is more used for digestion.
This winter I tried it again, ordered it from the UK (I think it comes from Norway)since there is no soy bean oil added, did it daily for more than 6 months and no change.
Or should say my stone was 2.9cm, before the biggest it ever was 2.8 cm. Not that it means very much because sometimes it goes down and the next year it is up again, US are not that precise.
When I first posted about the laser treatment, someone said that is what the Russians do.
Yes there is a warning on fasting forums, that you might get gallbladder problems.