What side effects may I notice from receiving Clarithromycin?

Side effects that you should report to your doctor or health care professional as soon as possible:

-allergic reactions like skin rash, itching or hives, swelling of the face, lips, or tongue
-irregular heartbeat or chest pain
-pain or difficulty passing urine
-rash, fever, and swollen lymph nodes
-redness, blistering, peeling or loosening of the skin, including inside the mouth
-yellowing of the eyes or skin

Side effects that usually do not require medical attention (report to your doctor or health care professional if they continue or are bothersome):

-abnormal taste
-anxiety, confusion, or nightmares
-diarrhea
-headache
-intestinal gas
-stomach upset or nausea

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