To prevent kidney stones, you should increase the amount of water you drink, aiming at least 2L/24 hours or enough to make your urine clear rather than yellow. Talk to your doctor for more advice on this. If you get calcium oxalate stones, you should cut down on foods that have high levels of oxalate(chocolate, tea, rhubarb, spinach and strawberries).If you get uric acid stones, you should eat less meat, fish and poultry and your doctor may prescribe medicines to help reduce levels of uric acid in your urine. Your doctor may prescribe medicines to reduce the chance of you getting cystine stones. If you develop struvite(or infection) stones, you may need to take long-term antibiotics to keep your urine free of the bacteria that are causing the infection.
Attribution: BUPA