
Things you can't change
Your personal and family history matter.
- Previous kidney stones
- Family history of stones
- Age and sex
Had a kidney stone before? Your personal history, family history, hydration habits, diet, and certain health conditions can all influence your risk.
Explore risk factorsU.S. lifetime estimates reported by NIDDK.
Individual risk varies.
Some factors are inherited. Others are part of your everyday routine.

Your personal and family history matter.

Less fluid means more concentrated urine.

Certain foods and drinks can add to risk.

Some health conditions and medicines can affect urine chemistry.
High-dose vitamin C, calcium supplements taken without meals, and medicines such as topiramate (used for seizures or migraine). Some diuretics can raise risk, while others are prescribed to help lower it. Don't stop or change a medicine on your own.
Uric acid stones form when urine is too acidic, which lets uric acid crystallize instead of staying dissolved. People with gout, high uric acid, or a history of these stones often benefit from a plan that raises urine pH and citrate alongside good hydration. If any of this sounds like you, talk with your healthcare professional about your individual urine chemistry before choosing a routine.
In just a few minutes, get pointed to the information that matters most for you.
Choose one. A previous stone is one of the strongest predictors of another.
Select any that apply. This isn't a diagnosis. It simply helps point you toward the most useful information.
These conditions can affect urinary chemistry or the way your body handles fluids and minerals.
Educational self-check only. It does not diagnose a condition, calculate stone risk, or determine whether a supplement is safe for you. Nothing you select is saved or sent anywhere.
Build your routine around your stone type and your clinician's advice.
Sip water throughout the day. Pale-yellow urine is a useful cue. Ask for a personal fluid goal if you have fluid restrictions.
Citrate binds calcium in urine and helps inhibit crystals. Citrus can supply citrate, but juices and supplements aren't interchangeable.
Choose less salt, moderate animal protein, and enough calcium from food. Ask whether you need to limit oxalate.
Your stone type, kidney function, and medications matter. KSPtabs does not replace medical care or prescribed treatment.
Had stones before? Ask about a 24-hour urine test. It can reveal low urine volume, low citrate, and other clues to guide your plan.
Talk to a clinician before using KSPtabs if you have reduced kidney function, take medicines that affect potassium, or have been told to limit fluids. Resources for medical professionals ↗
Urologist-developed KSPtabs dissolves in water for an easy citrate + hydration routine. No large pills. No lemon squeezing.
No prescription required. Use as directed. View ingredients & Supplement Facts →
*Median urinary citrate rose from 597 to 797 mg/day in a small crossover study of 10 healthy adults with no stone history. It measured urine chemistry, not stone recurrence. Read the study ↗