Benefits
FDA Qualified Health Claim — UTI Prevention
FDA authorized qualified health claim: consuming 500 mg cranberry dietary supplement daily 'may reduce the risk of recurrent UTI' in healthy women with prior UTI history. Exocyan™ at 500 mg meets this threshold. Foundational regulatory positioning.
E. coli Anti-Adhesion (PAC Mechanism)
Type-A PACs from cranberry inhibit adhesion of uropathogenic E. coli (UPEC) to bladder epithelium — preventing bacterial colonization. Distinct mechanism from antibiotics — reduces recurrence rather than treating active infection.
Recurrent UTI Reduction in Women
Multiple cranberry meta-analyses show modest to moderate reduction in UTI recurrence in women with prior UTI history. Effects most consistent with adequate PAC dose; dose-response relationship important.
High PAC Standardization (Up to 90%)
Exocyan™ can provide up to 90% PACs by Bate-Smith method or 20% by BL-DMAC method — among the most concentrated cranberry extracts available. Lower volume needed for equivalent PAC dose.
Authentication Verification
Nexira developed proprietary universal analytical method to verify Exocyan™ as Vaccinium macrocarpon — protecting against widespread cranberry adulteration with cheaper grape pomace, peanut skin extract, or other materials.
Mechanism of action
Type-A PAC Anti-Adhesion of E. coli
Cranberry PACs (specifically TYPE-A linkage proanthocyanidins, distinguished from type-B in other plant sources) bind to FimH adhesin on uropathogenic E. coli pili — preventing bacterial attachment to mannose receptors on bladder epithelium. Bacteria are flushed out in urine rather than colonizing. Foundational mechanism.
BL-DMAC vs Bate-Smith PAC Quantification
Two analytical methods quantify PACs differently: BL-DMAC measures total PAC content; Bate-Smith measures higher molecular weight fractions. Exocyan™ standardizes by both — provides regulatory and clinical specifications.
Polyphenol Co-Delivery
Whole cranberry powder provides additional polyphenols beyond PACs — flavonoids, anthocyanins, hydroxycinnamic acids — supporting overall vascular and urinary health.
Vitamin C and Acidic Urine Effect (Modest)
Cranberry contributes modest urine acidification; older theory of UTI prevention via acidification has been largely replaced by PAC anti-adhesion as primary mechanism.
Clinical trials
FDA review of cranberry clinical evidence supporting Qualified Health Claim authorization.
Healthy women with UTI history.
Limited but supportive evidence that 500 mg cranberry daily may reduce recurrent UTI risk. Established regulatory framework for evidence-based UTI prevention claims.
Meta-analyses of cranberry RCTs for UTI prevention.
Pooled across populations including women with recurrent UTIs.
Moderate evidence for UTI recurrence reduction in women with prior UTIs. Effect size variable; dose, PAC content, and population characteristics matter. Generally supportive but inconsistent.