Read the side effects of Cranberry as described in the medical literature. In case of any doubt consult your doctor or pharmacist.
Genitourinary-
Pain or burning sensation in urethra, blood in urine and decreased urine output.
Gastrointestinal-
Severe stomach pain.
Severe allergic reactions-
Rash, hives, itching, difficulty in breathing, tightness in the chest and swelling of the mouth, face, lips or tongue.
Other Precautions : *Avoid excess dosage.