I'm experiencing some side effects from my medication. Is that normal?

Contact your doctor. Side effects are not necessarily "normal" but they can be "expected." this will depend on the side effect and the medication taken. Some side effects are not serious, but others can be life threatening. Best to contact your doctor for specifics.
Yes. 10% of people experience side effects from sugar. Slightly more than that experience side effects from meds. Discuss with your doc and see whether switching meds might be in your best interest.