Cranberry has a long history in folk medicine and continues to be one of the most widely studied home remedies, particularly for urinary tract health. Research suggests that compounds called proanthocyanidins (PACs) in cranberries may help prevent certain bacteria from adhering to the walls of the urinary tract, and multiple studies indicate that regular consumption of cranberry products may reduce the frequency of urinary tract infections in some populations, especially women with recurrent episodes. Beyond urinary health, emerging research has explored cranberry's rich polyphenol content for its potential antioxidant properties, as well as possible benefits for oral health and gut microbiome diversity. Cranberry is commonly available as unsweetened juice, extract capsules, or dried fruit, and is sometimes paired with D-mannose for complementary support.
Compare this supplementResearch suggests that cranberry's role in urinary tract health is supported by a growing body of mechanistic and cli...
View studies →Research suggests that cranberry and its bioactive compounds — particularly proanthocyanidins, polyphenols, and oligo...
View studies →Research suggests that the single study retrieved for this query does not actually investigate cranberry or its use f...
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 | Twice daily | Urinary tract health — recurrent UTI prevention | Common dose range used in clinical trials for UTI prophylaxis |
| Extract | 250–500 mg | Twice daily | Dental and oral health — inhibition of bacterial adhesion (S. mutans) | Based on clinical studies examining cranberry's anti-adhesion effects on oral pathogens |
| Extract | 500–1,000 mg | Daily | Gut health — modulation of gut microbiota and gastrointestinal inflammation | Used in clinical trials assessing gut microbiome composition and intestinal health markers |
| Extract | 36 mg | Daily | Urinary tract health — proanthocyanidin (PAC) standardized dose for UTI prevention | Widely referenced in RCTs as the target PAC dose for anti-adhesion activity |
| Liquid | 240–300 ml | Daily | Urinary tract health and antioxidant support — cranberry juice cocktail | Standard volume used in clinical trials studying UTI prevention and oxidative stress |
| Powder | 500–1,500 mg | Daily | Antioxidant support and general urinary health | Used in RCTs examining antioxidant markers and urinary tract endpoints |