Cystoman® and calculi: a good alternative to standard therapies in preventing stone recurrence
https://pubmed.ncbi.nlm.nih.gov/24972556/
Until this study, it was not generally thought E. coli could be in the kidney, itself.
Increasing Lactobacillus crispatus and taking modest amounts of D-mannose might yield great benefits.
That Cystoman formula has capsules of the following combined ingredients:
D-mannose 100 mg, Cranberry 40 mg (35% polyphenols), Vitamin C 60 mg.
https://www.efarma.com/cystoman-1000-12cpr.html