Luckily I have not had to experience this yet in life.
My buddy used this herbal substance off of Amazon, made out of some stuff from South America which is supposedly supposed to be extremely effective for kidney and gall stones.
After using it for X amount of time, a few days or so, it stopped hurting, he was able to go back to work, then about a week and a half later he said he passed it without incident.
This is the stuff-
https://www.amazon.com/dp/B01FERIHYE?psc=1
thanks- added to my amazon cart for purchase- worth a try- Most of my stones go through without too much pain- but every so often one is large and sharp enough to cause problems- Tell your buddy i found out that eating salty snacks like ritz crackers, corn chips, & such was increasing the amount of stones I’d get- but the weird thing was i could put table salt on foods and be fine- There are several kinds of stones- the ones I get are worsened by certain salt I guess- Since I stopped eating salty snacks, and cut down on deli meats- i get less now- probably more like 40 a year- before I discovered snacks were contributing some, it was around 80 or so- and more bad ones too-