Plain-English translation of NCT05542056 on ClinicalTrials.gov ↗ · Source last updated · Translation generated · How we translate trials
This research is studying whether a simple urine test can predict which patients will experience low sodium levels as a side effect of thiazide diuretics—a common type of blood pressure medication. Researchers believe that measuring a natural substance in urine before you start this medication might help doctors identify who is at risk for this complication. If successful, this could help doctors prevent or catch this side effect early.
Low sodium levels can be a serious side effect of this blood pressure medication, but doctors don't currently have a reliable way to predict who will develop it. Finding an early warning sign could help doctors protect patients from this complication before it happens.
You likely qualify if…
You likely don't qualify if…
You would visit the clinic four times over three months. At your first visit, before starting the medication, you'll provide a urine sample. Then you'll start taking the blood pressure medication as prescribed by your doctor. You'll return about four weeks later for another urine sample and blood test to check your sodium levels. Finally, you'll have a follow-up visit at three months. The whole process is observational—your doctor is prescribing the medication anyway, and you're simply helping researchers understand a potential warning sign.
AI-generated summary from trial data · Sep 24, 2026 · Not medical advice
Spain
Switzerland