

Entacapone is a prescription oral medication used along with Levodopa/carbidopa to manage Parkinson’s disease symptoms. This medication works only in combination with Levodopa to counter the “wearing-off” effects of the dose. Entacapone belongs to the class of medicines known as catechol-O-methyltransferase (COMT) inhibitors and is available in 200 mg strength tablets.
| Product Name (Generic) | Entacapone |
|---|---|
| Drug Class | Catechol-O-methyltransferase (COMT) inhibitor |
| Available Forms | Oral Tablets |
| Strengths Available | 200 mg |
| Routes of Administration | Taken by mouth |
| Entacapone Uses | Treats Parkinson’s disease |
| Entacapone Storage | Store at 20-25°C (68-77°F). Short-term excursions between 15-30°C (59-86°F) are permitted. |
| Pregnancy and Breastfeeding | Consult a doctor |
| Legal Status | Rx only |
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Entacapone is mainly used as an add-on treatment for Parkinson’s disease in combination with Levodopa/carbidopa. Parkinson’s disease develops when the brain does not produce enough dopamine, a chemical that helps control movement. By adding Entacapone to Levodopa, body movements stabilize, and “off-time” decreases.
When Parkinson’s disease occurs, dopamine levels are reduced in the brain. Levodopa improves body movements by being converted to dopamine. Before levodopa reaches the brain, much of it breaks down in the body. This limits the amount of dopamine that can be produced.
Entacapone works by:
This leads to:
Entacapone prolongs the effects of levodopa by inhibiting COMT outside the brain, reducing peripheral breakdown.
Keep the following Entacapone precautions in mind:
Entacapone is beneficial in the treatment of Parkinson’s disease, but also has some adverse effects. The following list of Entacapone side effects may occur while using this medication. You should always seek medical help immediately if you experience any serious symptoms.
| Less Common Side Effects | Stiffness | Serious Side Effects |
|---|---|---|
| Anxiety | Absence of or decrease in body movements | Muscle cramps |
| Bloating | Dizziness | Shortness of breath |
| Belching | Diarrhea | Pain |
| Dry mouth | Urine may turn brownish-orange (harmless effect) | Confusion |
| Sour or unusual taste in the mouth | Hyperactivity | Stiffness |
| Fear | Increased body movements | Unusual tiredness |
| Heartburn | Hallucinations | - |
| Increased sweating | Twitching | Bloody or cloudy urine |
| Excess gas in the stomach or intestines | Dyskinesia (involuntary movements) | - |
| Lack of strength | Uncontrolled repetitive movements of legs, arms, tongue, face, or lips | Loss of appetite |
| Restlessness | Stomach pain | Loss of bladder control |
| Unusual drowsiness | Constipation | Severe mental changes |
| Swollen mouth and tongue | Dyskinesia (involuntary body movements) | Fast or irregular heartbeat |
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Entacapone should only be used under your healthcare provider’s supervision. The medication is contraindicated in patients who have:
Following the Entacapone administration guide is important because the dosage may vary from one individual to another, depending on their health condition. Refer to the dosage guidelines table below for recommended Entacapone use.
| For Adults: Entacapone 200 mg tablets must be taken in combination with Levodopa/carbidopa | The maximum recommended dose is 200 mg taken up to 8 times per day (1600 mg daily total), with each dose of Levodopa/carbidopa. |
|---|
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Consult your doctor for the exact Entacapone dosage based on your individual health condition.
Taking too much Entacapone can be life-threatening; use it with caution. In case of Entacapone overdose, seek immediate medical attention. Call the Poison Control Center by dialing 1-800-222-1222.
If you have missed a dose of Entacapone, take it as soon as possible. If you are close to your next dose, skip the missed medicine and continue with your regular dosage schedule. Do not take your medication twice.
The Entacapone storage guide is as follows:
Several medicines should not be taken with Entacapone. Your healthcare professional should know about the medicines that you are taking before starting Entacapone for the treatment of Parkinson’s disease. The following list compiles the Entacapone interactions:
The above interaction list is incomplete. Your doctor may suggest the complete list of medicines that are not suitable to take with Entacapone.
The following are FDA-approved medicines considered Entacapone alternatives for the treatment of Parkinson’s disease.
Before you consider any of the above alternatives, you should consult your healthcare provider. These medications may work differently for different patients.
Entacapone for the treatment of Parkinson’s disease can be costly for you if you are getting your medicines from local U.S. pharmacies. At Polar Bear Meds, we help you access your prescribed medications at more affordable prices by sourcing them through fully licensed Canadian and international pharmacy partners.
You can buy Entacapone online from Polar Bear Meds by getting your hands on several benefits:
At Polar Bear Meds, we keep your trust intact. Every order is processed through licensed pharmacy partners to ensure you receive authentic Entacapone medicine as prescribed by your healthcare professional. If you are seeking a trusted, affordable way to buy Entacapone online for Parkinson’s disease from Canada, Polar Bear Meds provides an affordable way to access your prescribed medication.
The medical information provided about Entacapone is for informational and educational purposes only and is not intended to replace professional medical advice, diagnosis, or treatment. Entacapone is a prescription-based medicine and should be used only under the supervision of a healthcare professional. Always consult your doctor before changing or stopping your Entacapone dosage.

Dr. Jackson Miller is a board-certified medicine physician & hospitalist. He is a healthcare professional with a strong background in patient care. With years of experience and a patient-first approach, he believes the foundation of good health is a patient who feels informed and empowered. He contributes to medical content review, drawing on his background in clinical practice and patient education. He focuses on presenting health information in a clear, accurate, and accessible way to help readers make informed decisions. His work emphasizes clarity, evidence-based guidance, and understandable explanations of medical topics.
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