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Medically reviewed by Last updated on Nov 16, 2020.

What are other common names?

  • Vaccinium macrocarpon
  • Vaccinium oxycoccos
  • American Cranberry
  • Arandano Americano
  • Arandano Rtepador
  • Bearberry
  • Bog Cranberry
  • Cranberries
  • Cranberry Extract
  • Cranberry Fruit
  • Cranberry Fruit Juice
  • Cranberry Juice
  • Cranberry Juice Cocktail
  • Cranberry Juice Concentrate
  • Cranberry Powder
  • Cranberry Powdered Extract
  • Craneberry
  • European Cranberry
  • Grosse Moosbeere
  • Kranbeere
  • Large Cranberry
  • Mossberry
  • Small Cranberry
  • Trailing Swamp Cranberry
  • Tsuru-Kokemomo
  • Vaccinium

What is this product used for?

Cranberry is used by some people to help prevent urinary tract infections.

What are the precautions when taking this product?

  • Always check with your doctor before you use a natural product. Some products may not mix well with other drugs or natural products.

  • Take extra care if you are taking drugs to thin your blood. These are drugs like warfarin (Coumadin).

  • Take extra care and check with your doctor if you have:

    • Bladder problems

    • Kidney stones

What should I watch for?

  • Upset stomach

When do I need to call the doctor?

  • Signs of a very bad reaction. These include wheezing; tightness in the chest; fever; itching; bad cough; blue skin color; seizures; or swelling of face, lips, tongue, or throat. Go to the ER right away.

  • Very bad throwing up

  • Very bad loose stools

  • Very bad pain in your back

Where can I learn more?

National Center for Complementary and Integrative Health

Last Reviewed Date


Consumer information use

This information is not specific medical advice and does not replace information you receive from your healthcare provider. Only your healthcare provider has the knowledge and training to provide advice that is right for you. You should not rely on this information in deciding whether or not to use, or accept your healthcare provider’s advice regarding use of, any natural products or similar treatments, therapies, or life-style choices. This information does not endorse any natural products or similar treatments, therapies, or life-style choices as safe, effective, or approved for treating any patient or health condition. This is only a brief summary of general information. It does NOT include all information about natural products, possible uses, directions, warnings, precautions, interactions, adverse effects, or risks that may apply to you. You must talk with your healthcare provider for complete information about your health and treatment options.


Further information

Always consult your healthcare provider to ensure the information displayed on this page applies to your personal circumstances.