Cranberry and UTI
What 6 graded rows on cranberry agree on for UTI, and where they differ. Counted side by side, never averaged.
Consensus finder Rows from the Cranberry page, reviewed Oct 21, 2026 How it decides
What the rows agree on
Each block and row is one graded row from the Cranberry page, with its PubMed record.
Your question
Cranberry and UTI
6 rows · 12,607 peopleMostly an improvement: 4 of 6 rows, and most of the people. 2 found no difference.
- BGrade B× 3
- CGrade C× 1
- ∅No effect× 2
- Rows
- 6
- Trials
- 55
- People
- 12,607
- Pooled reviews may count some twice
Where they differ
From the rowsThe best-graded row, grade B, is a systematic review of 6,211 people (2023) and found an improvement. 2 rows are graded No effect, our grade for adequately powered trials that found no effect.
Only the 4 rows that found an improvement name children or teens in their population. Only the 2 rows that found no difference name older adults in their population.
The rows
4 improved · 2 no difference- BGrade BSymptomatic, culture-confirmed UTIs (all groups) · Improved
Systematic review, 26 studies · n 6,211 · 2023 · Children and adults at risk of UTI in 26 pooled RCTs
Varied across trials · Varied across trials
Cranberry products lowered UTI risk vs placebo, water or no treatment (RR 0.70, 95% CI 0.58–0.84; moderate certainty), with substantial heterogeneity (I² 69%).
- BGrade BUTIs in women with recurrent UTIs · Improved
Systematic review, 8 studies · n 1,555 · 2023 · Women with recurrent UTIs in 8 RCTs
Varied across trials · Varied across trials
Risk fell about a quarter (RR 0.74, 95% CI 0.55–0.99; I² 54%).
- BGrade BUTIs after a medical procedure · Improved
Systematic review, 6 studies · n 1,434 · 2023 · People susceptible to UTI because of an intervention, in 6 RCTs
Varied across trials · Varied across trials
Risk fell by about half (RR 0.47, 95% CI 0.37–0.61; I² 0%).
- CGrade CUTIs in children · Improved
Systematic review, 5 studies · n 504 · 2023 · Children in 5 RCTs
Varied across trials · Varied across trials
Risk fell by about half (RR 0.46, 95% CI 0.32–0.68; I² 21%).
- ∅No effectUTIs in care-home residents, pregnancy and bladder-emptying problems · No difference
Systematic review, 9 studies · n 2,718 · 2023 · Older adults in care (3 RCTs, 1,489), pregnant women (3 RCTs, 765) and adults with neuromuscular bladder dysfunction (3 RCTs, 464)
Varied across trials · Varied across trials
Little or no difference: RR 0.93 in care-home residents, 1.06 in pregnancy and 0.97 with bladder-emptying problems.
- ∅No effectBacteriuria plus pyuria in nursing-home residents · No difference
RCT · n 185 · 2016 · Women aged 65+ in 21 Connecticut nursing homes
2 capsules daily, 72 mg PACs in total · 1 year
No difference vs placebo (29.1% vs 29.0%; OR 1.01). Symptomatic UTIs (10 vs 12 episodes), deaths and hospitalizations also did not differ.