Overview
UTI support and prevention (anti-adhesion effects on uroepithelial cells; E. coli adherence inhibition noted); urinary deodorizer in incontinence (reduce ammoniacal odors); prevention of urinary catheter blockage; kidney stone management (stones more soluble in acidic environment). Discussed in text as diuretic, antiseptic, antipyretic; research also explores antioxidant/anti-inflammatory and possible chemopreventive/anticancer activity.
Plant family
Ericaceae
Parts used
Fruit
Actions
Astringent · Diuretic · Antimicrobial
Affinities
Urinary · Digestive
Body systems
Urinary · Digestive
Taste profile
Tart
Tissue states
Traditional use
Traditionally used for urinary tract infections; also for blood disorders, liver problems, loss of appetite, scurvy, stomach problems, and in wound dressings (per course text).
Current use
UTI support and prevention (anti-adhesion effects on uroepithelial cells; E. coli adherence inhibition noted); urinary deodorizer in incontinence (reduce ammoniacal odors); prevention of urinary catheter blockage; kidney stone management (stones more soluble in acidic environment). Discussed in text as diuretic, antiseptic, antipyretic; research also explores antioxidant/anti-inflammatory and possible chemopreventive/anticancer activity.
Preparation
Sweetened juice preparations; food use; extracts (per course text).
Dosage guidance
For UTI: typical dose via sweetened juice prep 16–32 oz daily. For prevention: 4–32 oz daily. For renal sores: 16–32 oz (per text).
Cautions & contraindications
Use caution in diabetes due to high caloric content of cranberry juice; prefer sugar-free preparations. Due to acidity, may increase B12 absorption issues in people on proton pump inhibitors/with hypochlorhydria/atrophic gastritis (per course text). May increase risk of kidney stones (oxalate content), especially with concentrates and high intake; use caution with kidney stone history. Excessive use (e.g., 3–4 L/day) can cause GI upset/diarrhea; long-term >1 L/day may increase uric acid kidney stone risk. Reports of interaction with warfarin; avoid with warfarin unless benefits outweigh risks (per text).
Evidence notes
Course text cites studies on bacterial anti-adhesion (E. coli) and a trial showing reduced UTI recurrence vs controls; also notes broader in vitro cancer/anti-inflammatory research. Clarifies not to confuse with high-bush cranberry (Viburnum opulus / cramp bark).