Entacapone
Why this is used
Entacapone is an inhibitor of catechol-O-methyltransferase (COMT). It is used in combination with levodopa and carbidopa (Sinemet) to treat the end-of-dose 'wearing-off' symptoms of Parkinson's disease. Entacapone helps the levodopa and carbidopa work better by allowing more of it to reach the brain, where it has its effects. This medication is sometimes prescribed for other uses; ask your doctor or pharmacist for more information.
How to take it
Entacapone comes as a tablet to take by mouth. It is taken with every dose of levodopa and carbidopa, up to 8 times a day. Entacapone may be taken with or without food. Read your prescription label carefully, and ask your doctor or pharmacist to explain any part you do not understand. Take entacapone exactly as directed. Do not take more or less of it or take it more often than prescribed by your doctor. Entacapone helps control the symptoms of Parkinson's disease, but it does not cure it. Continue to take entacapone even if you feel well. Do not stop taking entacapone without talking to your doctor. Stopping entacapone suddenly may make your Parkinson's disease worse and could have other dangerous effects. Your doctor probably will decrease your dose gradually if necessary.
Side effects
<p></p> <p></p> <p></p> <p>Entacapone may cause side effects. Tell your doctor if any of these symptoms are severe or do not go away:
<ul>
<li>
dizziness</li>
<li>
diarrhea</li>
<li>
upset stomach</li>
<li>
movements you cannot control</li>
<li>
stomach pain</li>
<li>
drowsiness</li></ul></p> <p></p> <p>If you experience any of the following symptoms, call your doctor immediately:
<ul>
<li>
difficulty breathing</li>
<li>
hallucinations</li>
<li>
high fever</li>
<li>
confusion</li>
<li>
muscle stiffness</li>
<li>
weakness with or without a fever</li></ul>If you experience a serious side effect, you or your doctor may send a report to the Food and Drug Administration's (FDA) MedWatch Adverse Event Reporting program online [at <a href='http://www.fda.gov/Safety/MedWatch'>http://www.fda.gov/Safety/MedWatch</a>] or by phone [1-800-332-1088].</p>
<ul>
<li>
dizziness</li>
<li>
diarrhea</li>
<li>
upset stomach</li>
<li>
movements you cannot control</li>
<li>
stomach pain</li>
<li>
drowsiness</li></ul></p> <p></p> <p>If you experience any of the following symptoms, call your doctor immediately:
<ul>
<li>
difficulty breathing</li>
<li>
hallucinations</li>
<li>
high fever</li>
<li>
confusion</li>
<li>
muscle stiffness</li>
<li>
weakness with or without a fever</li></ul>If you experience a serious side effect, you or your doctor may send a report to the Food and Drug Administration's (FDA) MedWatch Adverse Event Reporting program online [at <a href='http://www.fda.gov/Safety/MedWatch'>http://www.fda.gov/Safety/MedWatch</a>] or by phone [1-800-332-1088].</p>
Precautions
Before taking entacapone, tell your doctor and pharmacist if you are allergic to entacapone or any other drugs. tell your doctor and pharmacist what prescription and nonprescription medications you are taking, especially ampicillin, apomorphine (Zydis), bitolterol (Tornalate), chloramphenicol (AK-Chlor, Chloromycetin), cholestyramine (Cholybar, Questran, Questran Light, others), medications that cause drowsiness (including medications for anxiety and sleeping pills), dobutamine (Dobutrex), epinephrine (AsthmaHaler, EpiPen Auto-Injector, Primatene Mist, others), erythromycin (E-Base, E.E.S., E-Mycin, others), isoetharine (Arm-a-Med Isoetharine, Beta-2, Bronkometer, others), isoproterenol (Dispos-a-Med Isoproterenol, Isuprel, Medihaler-Iso, others), methyldopa (Aldomet), phenelzine (Nardil), probenecid (Benemid), rifampin (Rifadin, Rimactane), tranylcypromine (Parnate), and vitamins and herbal products. tell your doctor if you have or have ever had liver disease or a history of alcoholism. if you are having surgery, including dental surgery, tell the doctor or dentist that you are taking entacapone. you should know that this medication may make you drowsy. Do not drive a car or operate heavy machinery until you know how entacapone affects you.
Overdose
In case of overdose, call your local poison control center at 1-800-222-1222. If the victim has collapsed or is not breathing, call local emergency services at 911.
Educational reference only — talk to a pharmacist or prescriber about Entacapone.