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Alkaline citrate

University of Cologne · Phase 3 active Small molecule

Alkaline citrate raises urinary pH to reduce stone formation and dissolution of existing calculi.

Alkaline citrate raises urinary pH to reduce stone formation and dissolution of existing calculi. Used for Prevention and treatment of recurrent kidney stones (nephrolithiasis), Uric acid stone disease.

At a glance

Generic nameAlkaline citrate
Also known asno brand names, Shol's solution versus placebo solution (NaCl 0.9 %)
SponsorUniversity of Cologne
Drug classUrinary alkalinizing agent
ModalitySmall molecule
Therapeutic areaUrology / Nephrology
PhasePhase 3

Mechanism of action

Alkaline citrate works by increasing urinary alkalinity, which decreases the solubility of uric acid and calcium oxalate crystals, thereby preventing kidney stone formation and promoting dissolution of existing stones. Citrate also acts as a stone inhibitor by binding to calcium and reducing crystal aggregation. This mechanism is particularly effective for uric acid stones and calcium oxalate nephrolithiasis.

Approved indications

Common side effects

Key clinical trials

Primary sources

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SourceUsed for
ClinicalTrials.govTrial enrolment, design, endpoints, results