What side effects may I notice from receiving Thiola EC?

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
-dark urine
-fever
-joint pain
-mouth sores
-redness, blistering, peeling or loosening of the skin, including inside the mouth
-signs and symptoms of low red blood cells or anemia such as unusually weak or tired; feeling faint or lightheaded; falls; breathing problems
-swelling of the ankles, feet, hands
-swollen or painful glands
-trouble passing urine or change in the amount of urine
-unusual bruising or bleeding
Side effects that usually do not require medical attention (Report these to your doctor or health care professional if they continue or are bothersome.):

-changes in taste
-diarrhea
-nausea, vomiting
-tiredness
-upset stomach
-wrinkling or thinning of the skin

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