To be very frank, many doctors give advise regarding food but there is no such meta analysis proving it.
I personally do not advise such restrictions to my patients as once stone former is always a stone former.
Advise is to drink 2-2.5 litres of water in 24 hours.
In my clinic, for small (less than 7 mm) & non-obstructing stones, I prescribe a
diuretic, antispasmodic & pain killer if painful or just follow up
ultrasound to look for size & any obstruction to urine outflow.
Renal function tests, Serum uric acid, blood sugar & urine routine should be done.
Antiuricemic drugs like
allopurinol, urine alkalinising agents like sodamint & K-Mg citrate are prescribed if serum uric acid level is raised.
Hope this information is useful.
Thank you.