Sinemet

Last updated on RxList: 11/15/2021
Sinemet Patient Information Including Side Effects

Brand Names: Atamet, Parcopa, Rytary, Sinemet, Sinemet CR

Generic Name: carbidopa and levodopa

What is carbidopa and levodopa?

Carbidopa and levodopa is a combination medicine used to treat symptoms of Parkinson's disease, such as stiffness or tremors.

Carbidopa and levodopa is also used to treat Parkinson symptoms caused by carbon monoxide poisoning or manganese intoxication.

Carbidopa and levodopa may also be used for purposes not listed in this medication guide.

What are the possible side effects of carbidopa and levodopa?

Get emergency medical help if you have signs of an allergic reaction: hives; difficult breathing; swelling of your face, lips, tongue, or throat.

Call your doctor at once if you have:

  • uncontrolled muscle movements in your face (chewing, lip smacking, frowning, tongue movement, blinking or eye movement);
  • worsening of tremors (uncontrolled shaking);
  • severe or ongoing vomiting or diarrhea;
  • confusion, hallucinations, unusual changes in mood or behavior;
  • depression or suicidal thoughts; or
  • severe nervous system reaction--very stiff (rigid) muscles, high fever, sweating, confusion, fast or uneven heartbeats, tremors, feeling like you might pass out.

Some people taking carbidopa and levodopa have fallen asleep during normal daytime activities such as working, talking, eating, or driving. Tell your doctor if you have any problems with daytime sleepiness or drowsiness.

You may have increased sexual urges, unusual urges to gamble, or other intense urges while taking this medicine. Talk with your doctor if this occurs.

You may notice that your sweat, urine, or saliva appears dark in color, such as red, brown, or black. This is not a harmful side effect, but it may cause staining of your clothes or bed sheets.

Common side effects may include:

  • jerky or twisting muscle movements;
  • headache, dizziness;
  • low blood pressure (feeling light-headed);
  • sleep problems, strange dreams;
  • dry mouth;
  • muscle contractions; or
  • nausea, vomiting, constipation.

This is not a complete list of side effects and others may occur. Call your doctor for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088.

What is the most important information I should know about carbidopa and levodopa?

Do not use this medicine if you have used an MAO inhibitor in the past 14 days, such as isocarboxazid, linezolid, methylene blue injection, phenelzine, or tranylcypromine.

SLIDESHOW

Dementia, Alzheimer's Disease, and Aging Brains See Slideshow
Sinemet Patient Information including How Should I Take

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What should I discuss with my healthcare provider before taking carbidopa and levodopa?

You should not use this medicine if you are allergic to carbidopa or levodopa, or if you have:

Do not use this medicine if you have used an MAO inhibitor in the past 14 days. A dangerous drug interaction could occur. MAO inhibitors include isocarboxazid, linezolid, methylene blue injection, phenelzine, tranylcypromine, and others.

Tell your doctor if you have ever had:

The disintegrating tablet may contain phenylalanine. Tell your doctor if you have phenylketonuria (PKU).

People with Parkinson's disease may have a higher risk of skin cancer (melanoma). Talk to your doctor about this risk and what skin symptoms to watch for.

Tell your doctor if you are pregnant or breastfeeding.

How should I take carbidopa and levodopa?

If you already take levodopa, you must stop taking it at least 12 hours before you start taking carbidopa and levodopa.

Follow all directions on your prescription label and read all medication guides or instruction sheets. Your doctor may occasionally change your dose. Use the medicine exactly as directed.

Take this medicine at regular intervals, with or without food.

Swallow the capsule whole and do not crush, chew, break, or open it.

The tablet is sometimes broken in half to give the correct dose. Always swallow a whole or half tablet without chewing or crushing.

Place the orally disintegrating tablet in your mouth and allow it to dissolve, without chewing.

It may take up to several weeks before your symptoms improve. Keep using the medication as directed and tell your doctor if your symptoms do not improve. Tell your doctor if the effects of this medicine wear off quickly between doses.

If you use this medicine long-term, you may need frequent medical tests.

This medicine can affect the results of certain medical tests. Tell any doctor who treats you that you are using carbidopa and levodopa.

Do not stop using carbidopa and levodopa suddenly, or you could have unpleasant withdrawal symptoms. Ask your doctor how to safely stop using this medicine.

Store at room temperature away from moisture, heat, and light.

QUESTION

Parkinson's disease is only seen in people of advanced age. See Answer
Sinemet Patient Information including If I Miss a Dose

What happens if I miss a dose?

Take the medicine as soon as you can, but skip the missed dose if it is almost time for your next dose. Do not take two doses at one time.

Get your prescription refilled before you run out of medicine completely.

What happens if I overdose?

Seek emergency medical attention or call the Poison Help line at 1-800-222-1222.

What should I avoid while taking carbidopa and levodopa?

Avoid driving or hazardous activity until you know how this medicine will affect you. Your reactions could be impaired. Avoid getting up too fast from a sitting or lying position, or you may feel dizzy.

Avoid taking iron supplements or eating a diet high in protein. These things can make it harder for your body to digest and absorb carbidopa and levodopa. Talk with your doctor or dietitian about the best foods to eat or avoid.

What other drugs will affect carbidopa and levodopa?

Other drugs may affect carbidopa and levodopa, including prescription and over-the-counter medicines, vitamins, and herbal products. Tell your doctor about all your current medicines and any medicine you start or stop using.

Where can I get more information?

Your pharmacist can provide more information about carbidopa and levodopa.


Remember, keep this and all other medicines out of the reach of children, never share your medicines with others, and use this medication only for the indication prescribed.
Every effort has been made to ensure that the information provided by Cerner Multum, Inc. ('Multum') is accurate, up-to-date, and complete, but no guarantee is made to that effect. Drug information contained herein may be time sensitive. Multum information has been compiled for use by healthcare practitioners and consumers in the United States and therefore Multum does not warrant that uses outside of the United States are appropriate, unless specifically indicated otherwise. Multum's drug information does not endorse drugs, diagnose patients or recommend therapy. Multum's drug information is an informational resource designed to assist licensed healthcare practitioners in caring for their patients and/or to serve consumers viewing this service as a supplement to, and not a substitute for, the expertise, skill, knowledge and judgment of healthcare practitioners. The absence of a warning for a given drug or drug combination in no way should be construed to indicate that the drug or drug combination is safe, effective or appropriate for any given patient. Multum does not assume any responsibility for any aspect of healthcare administered with the aid of information Multum provides. The information contained herein is not intended to cover all possible uses, directions, precautions, warnings, drug interactions, allergic reactions, or adverse effects. If you have questions about the drugs you are taking, check with your doctor, nurse or pharmacist.

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