What side effects does Ibandronate Sodium cause?

Based on information from iGuard.org, a free medication monitoring service, 20% of patients experience side effects while taking Ibandronate Sodium (Boniva). Some of the side effects reported by iGuard members include: Heartburn/Reflux, Abdominal Pain/Cramps, Constipation, Muscle Pain/Cramps, Bone/Joint Pain, and Headache. Please follow up with your doctor or other healthcare provider if you are experiencing any symptoms that worsen or do not go away.