I've heard about herbal treatment, that is meant to break down the stones into little bits and pieces that can then be peed out. Ill include a list of herbs here.
Just a note: This is not a common practice anymore, and I don't think I've heard other teachers say anything about it before.
Also, do not expect this to be painless.
One more thing, the same person also said that eating 'volkoren' - whole grain bread prevents kidneystones due to some kind of acid or ingredient or however you want to call it in there, that basicly prevents the minerals to clump together.
Uraatstenen (I think this translates as urine stones) - Berberis vulgaris & Rubia tinctorum.
There is also a big list on kidneystones in general but I figured I should list the more specific ones. Also this is from a summary list in the back of one of my herbal books. The appropiate treatment regarding each herb should be looked up on individually.
Kidneystones, breaking down
Rubus fructicosus,
Orthosiphon stamineus,
Arctostaphylos uva ursi,
Rubia tinctorum,
Saponara officinalis,
Taraxacum officinalis,
Berberis vulgaris
Kidneystones, afvoeren (= disposing, removing)
Capsella bursa pastoris,
Tilia cordata,
Genista tinctoria,
Agrimonia eupatoria,
Ribes nigrum
Kidneystones, colic.
Datura stramonium
Polygonum aviculare
Rumex obtusifolius L.
Also the one who told me this about the kidneystones, said she would make a pot of tea with Berberis I think it is, - Rubia tinctorum, if I recall correctly, is on the protected species list - and she'd drink just that throughout the whole day.
She was also someone that responded heavily on any "regular" medication given.
There are people like that. To some people if you give lets say 1 painkiller or a half it's enough for them, to other people they could take 3 to 6 times that before they feel that it works.
Im using a painkiller as an example here, but same goes for medication, in example, for high blood pressure, or hormonal treatment for women to prevent pregnancies (which should be banned.. because this is totally abnormal and in some can cause long term problems, under which also falls, not being able to get pregnant even though you've stopped the treatment and other things).
I hope to have been of little help, if you have any questions, I'll try to see if I can help you with that, but I can't promise I'll come back to check on this topic or am able to answer them.