Cranberry has a long history of traditional use and is one of the most widely studied herbal supplements for urinary tract health. Research suggests that cranberry's beneficial effects are largely attributed to proanthocyanidins (PACs), compounds that may help prevent certain bacteria from adhering to the walls of the urinary tract, potentially reducing the frequency of urinary tract infections in susceptible individuals. Studies also indicate that cranberry contains a rich profile of polyphenols and antioxidants that may support gut health by promoting a favorable balance of intestinal bacteria. Available in several standardized forms, including concentrated extracts like Cran-Max and Ellura, cranberry supplements offer a convenient alternative to juice, which often contains added sugars. While the evidence is promising, findings vary across studies, and ongoing research continues to clarify the scope of cranberry's potential benefits.
Compare this supplementResearch suggests that the single available linked study does not directly investigate cranberry supplements or their...
View studies →Research suggests that cranberry supplements may help support urinary tract health by reducing the ability of UTI-cau...
View studies →These are commonly referenced dosage ranges for this supplement. They are not medical recommendations. Always consult a healthcare provider before supplementing.
| Form | Dose range | Frequency | Studied for | Source |
|---|---|---|---|---|
| Capsule | 500–1,000 mg | Daily | General antioxidant support and urinary tract health | Commonly used dose range in clinical and observational studies |
| Extract | 36 mg | Daily | Urinary tract health — PAC (proanthocyanidin) standardized dose for UTI prevention | Widely referenced in RCTs as the effective PAC threshold for anti-adhesion activity |
| Extract | 200–500 mg | Twice daily | Urinary tract health — recurrent UTI prevention | Common in clinical trials studying cranberry extract for UTI prophylaxis |
| Liquid | 240–300 ml | Daily | Urinary tract health — UTI prevention via cranberry juice | Dose used in multiple RCTs examining cranberry juice for UTI reduction |
| Powder | 1–1.5 g | Daily | Gut health and antioxidant support | Used in studies examining cranberry polyphenols and gut microbiota modulation |