What side effects may I notice from receiving Acetazolamide?

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, or tongue)
-high acid levels (trouble breathing; fast, irregular heartbeat; headache; confusion; unusually weak or tired; nausea, vomiting)
-infection (fever, chills, cough, sore throat, pain or trouble passing urine)
-liver injury (dark yellow or brown urine; general ill feeling or flu-like symptoms; loss of appetite, right upper belly pain; unusually weak or tired, yellowing of the eyes or skin)
-low red blood cell counts (trouble breathing; feeling faint; lightheaded, falls; unusually weak or tired)
-redness, blistering, peeling, or loosening of the skin, including inside the mouth
-unusual bruising or bleeding
Side effects that usually do not require medical attention (report to your doctor or health care provider if they continue or are bothersome):

-decreased hearing, ringing of the ears
-diarrhea
-increased thirst
-kidney stones (blood in the urine; pain when urinating; pain the lower back or side)
-loss of appetite
-nausea
-pain, tingling, numbness in the hands or feet
-unusual sweating
-vomiting

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