Patients taking this must test their urine regularly with pH paper, which turns different colors depending on whether the urine is acidic or alkaline. Too much sodium bicarbonate can cause the urine to become overly alkaline and increase the risk for calcium phosphate stones. This treatment should not be used by patients who need to restrict sodium for other medical conditions. Potassium citrate, which restores citrate to the urine, is useful for patients with high levels of uric acid in the urine. There is also a slight risk for xanthine stones with this drug.
Some patients experience an allergic reaction to allopurinol, which can be fatal.
Because allopurinol reduces uric acid rapidly, it may trigger an attack of gout in susceptible people. Patients should discuss the appropriate drug with their physician. Medications for Struvite Stones Eliminating Infection. Because the bacteria may hide within the stones, however, the stones themselves must be completely eliminated as well. Careful follow-up afterward, and testing urine for acidity is extremely important.