Cranberry Side Effects

Not all side effects for cranberry may be reported. You should always consult a doctor or healthcare professional for medical advice. Side effects can be reported to the FDA here.

Applies to cranberry: oral capsule, oral tablet

Get emergency medical help if you have any of these signs of an allergic reaction while taking cranberry: hives; difficulty breathing; swelling of your face, lips, tongue, or throat.

Stop using cranberry and call your doctor at once if you have any symptoms of a bladder infection, such as:

  • pain or burning when you urinate;

  • blood in your urine;

  • severe stomach pain; or

  • urinating less than usual or not at all.

Less serious side effects are more likely to occur, and you may have none at all.

Other side effects may also occur with the use of cranberry. Tell your doctor, pharmacist, herbalist, or other healthcare provider about any unusual or bothersome side effect.

Disclaimer: Every effort has been made to ensure that the information provided is accurate, up-to-date and complete, but no guarantee is made to that effect. In addition, the drug information contained herein may be time sensitive and should not be utilized as a reference resource beyond the date hereof. This material does not endorse drugs, diagnose patients, or recommend therapy. This information is a reference resource designed as supplement to, and not a substitute for, the expertise, skill , knowledge, and judgement of healthcare practitioners in patient care. The absence of a warning for a given drug or combination thereof in no way should be construed to indicate safety, effectiveness, or appropriateness for any given patient. does not assume any responsibility for any aspect of healthcare administered with the aid of materials provided. The information contained herein is not intended to cover all possible uses, directions, precautions, warnings, drug interactions, allergic reactions, or adverse effects. If you have questions about the substances you are taking, check with your doctor, nurse, or pharmacist.