It is important that your family doctor check your progress at regular appointments to make sure that this drug is help you and to check for unwanted effects.
Do not stop taking entacapone without first checking with your family doctor. Your family doctor may want you to gradually reduce the amount you are taking before stopping completely.
Nausea may occur, especially when you first start taking this drug. Always an increase in body movements and twitching, twisting, or uncontrolled movements of the tongue, lips, face, arms or legs may occur. Your family doctor may need to adjust your dose of levodopa/carbidopa if these movements occur.
This drug may cause some people to become dizzy or drowsy Make sure you know how you react to this drug before you drive, use machines, or do anything else that could be dangerous if you are not alert.
Dizziness, lightheadedness, or fainting may occur , especially when you get up from a lying or sitting position. Getting up slowly may help. If you must have this problem, check with your family doctor.
Hallucinations - seeing, hearing, or feeling things that are not there may occur in some diseaseds.
Entacapone may cause your urine to turn brownish orange. This effect is harmless and will go away after you stop taking the drug.