SINEMET
Used for Parkinson’s Disease
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Manufactured by Merck & Co., Inc.
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SINEMET Uses, Side Effects, Interactions, Warnings & Dosing
What is SINEMET?
SINEMET is the brand name for carbidopa/levadopa and is available as an oral tablet.
What dosages is SINEMET available in?
SINEMET is available as a 10 mg/100 mg, 25 mg/100 mg, and 25 mg/250 mg oral tablet.
What is SINEMET used for?
SINEMET is a dopa decarboxylase inhibitor / dopamine replacement and is used to treat the following:
- Parkinson’s disease (PD)
- Parkinsonism (conditions that cause people to have signs and symptoms of PD, including slowness, stiffness, shakiness, and imbalance)
How does SINEMET work?
SINEMET is a combination of two medications: carbidopa and levodopa. By working together, these medications help relieve symptoms of Parkinson’s disease (PD), which occur due to low dopamine levels in the brain. Levodopa is a dopamine replacement. Levodopa travels into your brain, where it’s converted into dopamine. It helps relieve PD symptoms by restoring dopamine in your brain. Carbidopa is a dopa decarboxylase inhibitor. Dopa decarboxylase is a protein in your body that breaks down levodopa before it can travel into your brain.
By blocking this protein, carbidopa prevents levodopa from breaking down. This raises the level of levodopa in your body and allows more levodopa to travel into your brain to be converted into dopamine. Levodopa and dopamine can then reach and remain at higher levels in your brain, which enhances levodopa’s ability to relieve PD symptoms.
How do I take SINEMET?
SINEMET is typically started at 25 mg/100 mg (carbidopa/levodopa) by mouth 3 times per day. Your healthcare provider will slowly raise your dose until your symptoms of PD are relieved.
Is it safe for me to take SINEMET?
SINEMET is a safe and effective treatment when used for FDA licensed indications. However, like all medications, they may give you unwanted side effects. You should always discuss potential side effects with your physician to ensure the medication is suitable and right for you. Nonselective monoamine oxidase (MAO) inhibitors are contraindicated for use with SINEMET. These inhibitors must be discontinued at least two weeks prior to initiating therapy with SINEMET.
SINEMET Common Side Effects
Common side effects of SINEMET:
- Involuntary movements
- Nausea
SINEMET Serious Side Effects
Serious side effects are rare with SINEMET. Contact your healthcare provider immediately if you experience any of the following.
- Neuroleptic malignant syndrome (NMS): very high fevers, confusion, irregular pulse, sweating, muscle stiffness, changes in blood pressure
Effects of other drugs, drug classes and over-the-counter products on SINEMET
The following medications may interact with SINEMET:
- Symptomatic postural hypotension has occurred when carbidopa levodopa preparations were added to
- the treatment of patients receiving some antihypertensive drugs
- Concomitant therapy with selegiline and carbidopa levodopa may be associated with severe orthostatic hypotension not attributable to carbidopa levodopa alone
- There have been rare reports of adverse reactions, including hypertension and dyskinesia, resulting from the concomitant use of tricyclic antidepressants and carbidopa levodopa preparations
- Dopamine D2 receptor antagonists (e.g., phenothiazines, butyrophenones, risperidone) and isoniazid may reduce the therapeutic effects of levodopa. In addition, the beneficial effects of levodopa in Parkinson’s disease have been reported to be reversed by phenytoin and papaverine. Patients taking these drugs with SINEMET should be carefully observed for loss of therapeutic response
- Use of SINEMET with dopamine-depleting agents (e.g., reserpine and tetrabenazine) or other drugs known to deplete monoamine stores is not recommended
- SINEMET and iron salts or multivitamins containing iron salts should be coadministered with caution. Iron salts can form chelates with levodopa and carbidopa and consequently reduce the bioavailability of carbidopa and levodopa
Who makes SINEMET?
Merck & Co., Inc.
Is SINEMET safe in pregnancy?
There are no adequate and well-controlled studies in pregnant women and SINEMET should be used during pregnancy only if the potential benefit justifies the potential risk to the fetus.
What to do if you missed your SINEMET dose
The FDA's medical product safety reporting program for health professionals, patients and consumers.
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Medical Disclaimer
NowPatient has taken all reasonable steps to ensure that all material is factually accurate, complete, and current. However, the knowledge and experience of a qualified healthcare professional should always be sought after instead of using the information on this page. Before taking any drug, you should always speak to your doctor or another qualified healthcare provider.
The information provided here about medications is subject to change and is not meant to include all uses, precautions, warnings, directions, drug interactions, allergic reactions, or negative effects. The absence of warnings or other information for a particular medication does not imply that the medication or medication combination is appropriate for all patients or for all possible purposes.
Things to know
What exactly does Sinemet do?
Should Sinemet be taken at bedtime?
Does Sinemet stop tremors?
What side effects does Sinemet have?
Does Sinemet help with walking?
What should I eat when taking Sinemet?
Is Sinemet a sedative?
What worsens Parkinson's disease?
Why was Sinemet discontinued?
Can Sinemet be stopped abruptly?
Has Sinemet been discontinued?
How long can you be on Sinemet?
What is the most prominent side effect of Sinemet 25 100 mg?
Why is it important to take Sinemet on time?
Why is Sinemet better than levodopa?
How long does Sinemet work for Parkinson's?
What is the difference between carbidopa-levodopa and Sinemet?
Is Sinemet better than generic?
Is Sinemet used for dementia?
What is the difference between Sinemet and half Sinemet?
Does Sinemet replace dopamine?
What to avoid when taking Sinemet?
What is the best food to take with Sinemet?
What vitamins should not be taken with carbidopa levodopa?
What drugs Cannot be taken with levodopa?
Does food interfere with Sinemet?
Can you drink coffee with carbidopa levodopa?
What is the best breakfast for Parkinson's patients?
Are bananas good for Parkinson's?
What is the best time of day to take carbidopa levodopa?
What foods help with dopamine in Parkinson's?
When is the best time to take Sinemet?
Should you take Sinemet at bedtime?
How long do you have to wait to take Sinemet after eating?
How many days does it take for Sinemet to start working?
What time of day are Parkinson's symptoms worse?
Does Sinemet interfere with sleep?
Is sleep a side effect of Sinemet?
Should you take carbidopa levodopa before bed?
Does Sinemet work immediately?
Can you take Sinemet 25 100 three times a day?
What is the most common adverse reaction to Sinemet?
What are the signs of too much carbidopa-levodopa?
How many hours does Sinemet last?
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