New evidence
Portulaca oleracea (purslane) raised urinary citrate and lowered calcium in a systematic review of kidney stone studies — but the evidence is still thin.
This is among the first indexed studies to look at purslane for kidney stone risk, so while the direction is promising, a single systematic review of small trials isn't enough to act on yet.
A systematic review of 14 randomized trials found that Portulaca oleracea (purslane) increased urinary citrate and reduced urinary calcium — both changes that can help prevent calcium-based kidney stones. The same review also reported less pain and better stone passage with several herbal formulations. However, the studies were small, the dose of purslane wasn't specified, and funding was unclear, so these results are early and need confirmation in larger, more rigorous trials.
Where this fits in the evidence
This is among the first studies we've indexed on Portulaca for Increased Urinary Citrate Level — treat it as an early signal until more research accumulates.
The study
- Systematic Review
- 2025-10-20
- Naunyn-Schmiedeberg's archives of pharmacology
This is a plain-language summary of a research finding, not medical advice. Pillser surfaces research signals to help you decide what's worth investigating — always consult a qualified professional before changing what you take.