What side effects may I notice from receiving Zetia?

Side effects that you should report to your doctor or health care provider as soon as possible:
-Allergic reactions—skin rash, itching or hives, swelling of the face, lips, tongue, or throat
Side effects that usually do not require medical attention (report to your doctor or health care provider if they continue or are bothersome):
-Diarrhea
-Joint pain

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