General Dosage
36mg or more A-type proanthocyanidins (PACs) daily from standardized cranberry extract
Maximum dose: No established upper limit; doses up to 144mg PACs daily have been studied safely
Cranberry Extract Dosage Guide
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Dosage Recommendations
General recommendation: 36mg or more A-type proanthocyanidins (PACs) daily from standardized cranberry extract
Timing: Once or twice daily with water; some evidence suggests twice daily dosing maintains more consistent urinary PAC levels • Take with food for best absorption.
Dosage by Condition
| Condition | Recommended Dose | Evidence |
|---|---|---|
| Recurrent UTI prevention | 36-72mg PACs daily | Strong |
| Post-intercourse UTI prevention | 36mg PACs within a few hours of intercourse | Emerging |
| General urinary health | 36mg PACs daily or 240ml unsweetened juice | Moderate |
Upper limit: No established upper limit; doses up to 144mg PACs daily have been studied safely
Timing & Absorption
Once or twice daily with water; some evidence suggests twice daily dosing maintains more consistent urinary PAC levels
Best taken with food for optimal absorption.
References
- Jepson RG, Williams G, Craig JC (2023). Cranberries for preventing urinary tract infections. Cochrane Database of Systematic Reviews. DOI PubMed
- Howell AB, Reed JD, Krueger CG, et al. (2005). A-type cranberry proanthocyanidins and uropathogenic bacterial anti-adhesion activity. Phytochemistry. DOI PubMed