Research
Calcium glycerophosphate for Bladder Health: Evidence, Interactions and Cautions
Calcium glycerophosphate is an ingredient used in bladder supplements marketed to women. Below is what it has actually been studied for, how strong that evidence is, the drug interactions and cautions on record, and the primary source our grade rests on — all drawn from the HerWellReport ingredient dataset.
Also sold as: Prelief; calcium glycerinophosphate
What the evidence says about Calcium glycerophosphate
The 2016 International Urogynecology Journal systematic review of complementary therapies for bladder pain syndrome screened 1454 citations and included 11 studies, only 4 of them randomised, and the evidence it found for calcium glycerophosphate was not among the randomised ones. What it reported instead was a finding that the supplement appears to reduce symptoms in a patient whose symptoms are exacerbated by particular foods, plus an internet survey in which respondents said they considered it helpful. That is patient perception, not controlled evidence. The review's overall verdict was that findings came from small studies and that robustly designed multicentre randomised trials are needed.
The grade "very limited" means: very limited — Mostly animal, laboratory or anecdotal evidence, with at most a single weak human study. Grades are explained in full on our methodology page.
Read the primary source this grade rests on (opens in a new tab).
Calcium glycerophosphate drug interactions
No documented drug interactions in the sources we checked. That is not the same as proof of safety alongside your medication — it usually means the question has not been studied. Ask a pharmacist before combining it with prescription drugs.
Who should be careful with Calcium glycerophosphate
No specific cautions recorded beyond the usual ones for any supplement: check with your doctor if you are pregnant, breastfeeding, have liver or kidney disease, or take regular medication.
Read more on HerWellReport
- Best Bladder Control Supplements for Women (2026): What’s Actually in Them
- One A Day Women’s Menopause Formula: An Honest Ingredient Review
- 65 Ingredients, None Proven: What Is Actually Inside the Supplements Sold to Women (2026)
- Cystex Review (2026): The Cranberry Dose It Won’t Disclose
- Bladder Supplement Side Effects and Drug Interactions: The Full List
This entry is generated from row "Calcium glycerophosphate" of the HerWellReport ingredient dataset (v2.1, updated 2026-09-23). The dataset is free to reuse under CC BY 4.0 — how to cite it. Ingredient evidence is not evidence for any finished product, and nothing here is medical advice.