What side effects may I notice from receiving Namenda XR?

Side effects that you should report to your doctor or health care professional as soon as possible:
-agitation or a feeling of restlessness
-allergic reactions like skin rash, itching or hives, swelling of the face, lips, or tongue
-depressed mood
-dizziness
-hallucinations
-redness, blistering, peeling or loosening of the skin, including inside the mouth
-seizures
-vomiting

Side effects that usually do not require medical attention (report to your doctor or health care professional if they continue or are bothersome):
-constipation
-diarrhea
-headache
-nausea
-trouble sleeping

This list may not describe all possible side effects for Namenda XR. Call your doctor for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088.