Cranberry extract, most commonly standardized for its proanthocyanidin (PAC) content, has been widely studied for its role in supporting urinary tract health. Research suggests that PACs may help prevent certain bacteria from adhering to the walls of the urinary tract, which is one reason cranberry has remained a popular choice in both traditional and modern wellness practices. Studies also indicate potential benefits for oral health, as similar anti-adhesion properties may apply to bacteria in the mouth, and the extract's rich polyphenol profile contributes notable antioxidant activity. Emerging research has begun exploring cranberry extract's influence on gut microbiota balance, though this area is still developing. Overall, cranberry extract represents one of the more extensively researched herbal supplements, with a generally well-regarded safety profile.
Compare this supplementResearch suggests that cranberry extract contains polyphenolic compounds, particularly proanthocyanidins and anthocya...
View studies →Research suggests that cranberry extract shows meaningful promise for several areas of oral health, particularly in r...
View studies →Research suggests that cranberry extract, particularly its proanthocyanidin and oligosaccharide components, may suppo...
View studies →Research suggests that cranberry extract may help support urinary tract health by reducing the ability of E. coli bac...
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 | 500–1,500 mg | Daily | Antioxidant support and cardiovascular health | Common in clinical trials assessing oxidative stress markers |
| Capsule | 500–1,000 mg | Twice daily | Urinary tract health and UTI prevention | Common range in RCTs on recurrent UTI prevention |
| Extract | 500–1,000 mg | Daily | Dental and oral health — anti-adhesion against oral pathogens | Based on clinical trials examining plaque and Streptococcus mutans inhibition |
| Extract | 36–72 mg | Daily | Urinary tract health — standardized PAC (proanthocyanidin) content | Based on RCTs using PAC-standardized extracts; 36 mg PAC is a frequently cited threshold |
| Powder | 1,000–1,500 mg | Daily | Gut health and microbiome modulation | Used in studies examining gut microbiota composition changes |