How Does Topiramate Cause Kidney Stones?

Did you know that topiramate can increase your risk of developing kidney stones? Topiramate is commonly used for conditions such as migraine prevention and seizures, but it can change the way your kidneys handle acid, bicarbonate, and citrate—creating an environment that can favor kidney stone formation. In this video, we explain: 🧪 How Does Topiramate Cause Kidney Stones? Topiramate inhibits carbonic anhydrase, an enzyme involved in acid-base regulation in the kidney. This can lead to: 🔹 Higher urine pH — making the urine more alkaline 🔹 Lower urinary citrate (hypocitraturia) — citrate normally helps prevent calcium stone formation 🔹 Changes in urinary calcium and bicarbonate handling 🔹 Increased risk of calcium phosphate kidney stones The basic pathway is: Topiramate → carbonic anhydrase inhibition → alkaline urine + hypocitraturia → increased calcium phosphate stone risk 🪨 What Type of Stone Is Associated With Topiramate? Topiramate is particularly associated with calcium phosphate stones, although patients can develop other types of kidney stones as well. 💧 Can You Prevent Kidney Stones While Taking Topiramate? Adequate fluid intake is important to help maintain a high urine volume and reduce the concentration of stone-forming substances. Importantly, do not stop topiramate on your own, particularly if it is being used to control seizures. Discuss the risks and benefits with your prescribing clinician. Topiramate does not cause kidney stones in everyone, but understanding how it changes urine chemistry can help patients and clinicians recognize and manage the risk. This video is for educational purposes only and does not replace individualized medical advice. #Topiramate #KidneyStones #CalciumPhosphateStones #Hypocitraturia #KidneyHealth #KidneyDisease #Nephrology #Nephrologist #KidneyClarity #Migraine #Seizures #StoneDisease