What side effects may I notice from receiving Tolcapone?

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
-changes in emotions or moods
-confusion
-falling asleep during normal activities like driving
-feeling faint or lightheaded, falls
-fever
-hallucinations
-new or increased gambling urges, sexual urges, uncontrolled spending, binge or compulsive eating, or other urges
-severe diarrhea
-signs and symptoms of liver injury like dark yellow or brown urine; general ill feeling or flu-like symptoms; light-colored stools; loss of appetite; nausea; right upper belly pain; unusually weak or tired; yellowing of the skin
-signs and symptoms of muscle injury like dark urine; trouble passing urine or change in the amount of urine; unusually weak or tired; muscle pain; back pain
-uncontrollable movements of the arms, face, head, mouth, neck, or upper body

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

-diarrhea
-dizziness
-headache
-loss of appetite
-nausea
-trouble sleeping

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