Ongentys , illustration of capsule form (not a photo of the actual pack)

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Ongentys

Opicapone

Prescription required

$594.00

50mg · 3 × 30 capsules · 3 months supply

BrandBranded medicine

$198.00 per month

How long a supply?

1 month$198.00 a month
3 months$198.00 a month
6 months$198.00 a month
Supplied from UK

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Annual cost

$2376a year at this pack size

Prescription required

Upload your prescription after ordering, or send it to our pharmacy team. We dispense only against a valid prescription.

About Ongentys

Overview

Ongentys contains opicapone, a medicine known as a COMT inhibitor, and comes as capsules taken by mouth. It is used alongside levodopa/carbidopa in people with Parkinson’s disease who experience “off” episodes. It works by blocking COMT, an enzyme that breaks down levodopa when it is used with carbidopa.

What it treats

Parkinson’s disease with “off” episodes, as an add-on treatment to levodopa/carbidopa.

Safety information

Side effects

Common side effects include uncontrolled movements (dyskinesia), constipation, increased blood levels of an enzyme called creatine kinase, low blood pressure or fainting, and weight loss. Contact a doctor if you experience sudden sleep during everyday activities, excessive sleepiness, low blood pressure or fainting, new or worsening uncontrolled movements, hallucinations, other symptoms of psychosis, or compulsive urges or behaviours. Taking Ongentys with certain medicines broken down by the COMT enzyme may cause an irregular heartbeat, increased heart rate or excessive changes in blood pressure. Contact a doctor if these occur. Very high fever and confusion can occur when stopping Ongentys and require urgent medical attention.

When to call your doctor

- A racing or irregular heartbeat, or fainting. - Falling asleep unexpectedly during everyday activities. - New or worsening uncontrolled movements. - Seeing or hearing things that are not there, or new urges or compulsive behaviours you cannot control. - A very high fever or confusion after stopping Ongentys.

If symptoms are severe or getting worse quickly, seek emergency care rather than waiting.

Before taking this medicine

Do not take Ongentys if you take a non-selective monoamine oxidase (MAO) inhibitor, or if you have or have had pheochromocytoma, paraganglioma or another tumour that releases catecholamines. Use should be avoided in people with end-stage kidney disease. Ongentys requires caution with medicines broken down by the COMT enzyme, as the combination may cause an irregular heartbeat, a faster heart rate or excessive changes in blood pressure. Monitoring is needed if these medicines are used together. Other important risks include falling asleep during everyday activities, low blood pressure or fainting, new or worsening involuntary movements, hallucinations or psychosis, and impulse-control problems or compulsive behaviour. Tell your prescriber if these occur. Stopping Ongentys requires monitoring because high fever and confusion can occur during withdrawal. If you are pregnant, discuss this with your prescriber. Animal studies suggest Ongentys may harm an unborn baby.

Using Ongentys

Dosing

Dosing is set by your prescriber. Each health care professional may prescribe medication differently according to a patient's medical history and condition, so follow the directions on your prescription label and speak to your doctor or pharmacist before changing anything.

Storage

Store below 25°C in a dry place, in the original pack, away from direct light and moisture. Do not keep it in a bathroom. Keep all medicines out of the sight and reach of children.

Clinical information on this page is summarised from the US FDA label ONGENTYS (OPICAPONE) CAPSULE [AMNEAL PHARMACEUTICALS LLC] (DailyMed, retrieved 19 September 2026).

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