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Cranberry is available in a variety of forms such as fresh or frozen cranberries, cranberry juice cocktail, other cranberry drinks, cranberry sauce, and powder in hard or soft gelatin capsules (2,10). Cranberries are approx 88% water and contain flavonoids, anthrocyanins (odain), cetechin, triterpinoids, y-hydroxybutyric acid, citric acid, malic acid, glucuronic acid, quinic acid, benzoic acid, ellagic acid, and vitamin C (2). Fresh or frozen cranberries are a good source of cranberry because they contain pure fruit; however, because of their high acidity and extremely sour taste, they are less readily used in clinical practice (1). Pure cranberry juice is tart like lemon juice because of the high citric and quinic acid content (2). Cranberry juice cocktail is more palatable, but is only 25-33% juice and contains corn syrup as a sweetener (2,10), whereas other cranberry juice drinks contain as little as 10% juice (2). These sweetened beverages are relatively high in calories (approx 140 kcal per 8-oz serving) (2) and could cause weight gain in a patient consuming the juice for medicinal purposes (10). Another drawback to sweetened beverages is that, theoretically, the sugar could act as a source of food for uropathogens (10). Cranberry sauce consisting of sweetened or gelled berries at a concentration one-half that of cranberry juice cocktail is also readily available to consumers (2). Cranberry capsules are a sugar-free source of cranberry. Hard gelatin capsules contain more crude fiber and organic acids than cranberry juice cocktail, whereas the soft gelatin capsules contain soybean oil and have only 8% of the total organic acids found in fresh cranberries (10). It takes 12 capsules of cranberry powder to equal 6 fluid oz of cranberry juice cocktail (10).

In the various studies and consumer references, many dosages and dosing regimens have been reported for the use of cranberry in prevention of renal calculi, prevention of urinary odor, and prevention and treatment of urinary tract infections.

3.1. Dosages Used or Recommended in Clinical Studies and Case Reports

Prevention of urinary tract infection: 8 oz of cranberry juice four times a day for several days, then twice daily (7); 300 mL/day as cranberry juice cocktail (11).

Treatment of urinary tract infection: 6 oz cranberry juice of daily for 21 days (12); cranberry juice 6 oz twice daily (13).

Reduction of urinary odors: 16 oz of cranberry juice daily (4); 3 oz of cranberry juice daily, then increased by 1 oz each week to a maximum of 6 oz daily (5).

Prevention of urinary stones: 1 qt of cranberry juice cocktail daily (8); 8 oz of cranberry juice four times a day for several days, then 8 oz twice daily (7).

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Acai, Maqui And Many Other Popular Berries That Will Change Your Life And Health. Berries have been demonstrated to be some of the healthiest foods on the planet. Each month or so it seems fresh research is being brought out and new berries are being exposed and analyzed for their health giving attributes.

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