What other names is Cranberry known by?
Agrio, Airelle à Gros Fruits, Airelle Canneberge, Airelle Européenne, Airelle Rouge, American Cranberry, Arándano, Arándano Americano, Arándano Rojo, Arándano Trepador, Atoca, Atoka, Bearberry, Canneberge, Canneberge à Feuillage Persistant, Canneberge d'Amérique, Canneberge Européenne, Cocktail au Jus de Canneberge, Cranberry Extract, Cranberry Fruit, Cranberry Fruit Juice, Cranberry Juice, Cranberry Juice Cocktail, Cranberry Juice Concentrate, Cranberry Powder, Cranberry Powdered Extract, Craneberry, Da Guo Yue Jie, Da Guo Yue Ju, Da Guo Suan Guo Man Yue Ju, European Cranberry, Extrait de Canneberge, Große Moosbeere, Gros Atoca, Grosse Moosbeere, Jus de Canneberge, Jus de Canneberge à Base de Concentré, Jus de Canneberge Frais, Kliukva, Kliukva Obyknovennaia, Kranbeere, Large Cranberry, Man Yue Ju, Man Yue Mei, Moosebeere, Mossberry, Oomi No Tsuruko Kemomo, Oxycoccus hagerupii, Oxycoccus macrocarpos, Oxycoccus microcarpus, Oxycoccus palustris, Oxycoccus quadripetalus, Petite Cannberge, Pois de Fagne, Pomme des Prés, Ronce d'Amerique, Sirop de Canneberge, Small Cranberry, Trailing Swamp Cranberry, Tsuru-Kokemomo, Vaccinium hagerupii, Vaccinium macrocarpon, Vaccinium microcarpum, Vaccinium oxycoccos, Vaccinium palustre.
Cranberry is a fruit. The fruit is used to make medicine.
Possibly Effective for...
- PREVENTING urinary tract infections (UTIs).
Possibly Ineffective for...
- Treating type 2 diabetes.
Insufficient Evidence to Rate Effectiveness for...
- Skin healing, pleurisy, cancer, chronic fatigue syndrome (CFS), reducing urine odor, and other conditions.
How does Cranberry work?
Cranberries contain certain chemicals that prevent bacteria from growing in the urinary tract.
Cranberry is safe for most people, but drinking too much cranberry juice can cause some side effects such as mild stomach upset and diarrhea. Drinking more than 1 liter per day for a long period of time might increase the chance of getting kidney stones.
Some cranberry juice products are sweetened with extra sugar. If you have diabetes, stick with cranberry products that are sweetened with artificial sweeteners.
Cranberries and cranberry juice are safe to consume during pregnancy and breast-feeding. But don't use dietary supplements that contain cranberry products. It is not known if these are safe to use during pregnancy and breast-feeding.
Cranberries, like many other fruits and berries, contain significant amounts of salicylic acid. Salicylic acid is similar to aspirin. Avoid drinking large quantities of cranberry juice if you are allergic to aspirin.
Are there any interactions with medications?
Interaction Rating: Moderate Be cautious with this combination.
Talk with your health provider.
Warfarin (Coumadin) is used to slow blood clotting. Cranberry might increase how long warfarin (Coumadin) is in the body, and increase the chances of bruising and bleeding. Be sure to have your blood checked regularly. The dose of your warfarin (Coumadin) might need to be changed.
Medications changed by the liver (Cytochrome P450 2C9 (CYP2C9) substrates)
Interaction Rating: Minor Be cautious with this combination.
Talk with your health provider.
Some medications are changed and broken down by the liver. Cranberry might decrease how quickly the liver breaks down some medications. Taking cranberry along with some medications that are broken down by the liver can increase the effects and side effects of some medications. Before taking cranberry, talk to your healthcare provider if you take any medications that are changed by the liver.
Some medications that are changed by the liver include amitriptyline (Elavil), diazepam (Valium), zileuton (Zyflo), celecoxib (Celebrex), diclofenac (Voltaren), fluvastatin (Lescol), glipizide (Glucotrol), ibuprofen (Advil, Motrin), irbesartan (Avapro), losartan (Cozaar), phenytoin (Dilantin), piroxicam (Feldene), tamoxifen (Nolvadex), tolbutamide (Tolinase), torsemide (Demadex), warfarin (Coumadin), and others.
The following doses have been studied in scientific research:
- For preventing urinary tract infections (UTIs): Cranberry juice 1-10 oz per day has been used. However, the ideal dose has not yet been determined.
- For preventing UTIs in children: 15ml/kg daily as 30% cranberry concentrate has been used.
- For use as a urinary deodorizer for incontinent patients: 3-6 oz per day of cranberry juice.
- For type 2 diabetes: Six capsules (equivalent to 240 mL cranberry juice cocktail) daily for 12 weeks. Encapsulated formulations are often taken in doses of 300-400 mg twice daily.
Approximately 1500 grams of fresh fruit produces 1 liter of juice. Cranberry juice cocktail is approximately 26% to 33% pure cranberry juice, sweetened with fructose or artificial sweetener.
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