Flecainide Orion
Flecainide Orion is a medicine used to treat heart rhythm disorders by helping to regulate the heart's rate and rhythm.
Form
depotkapseli, kova
Strength
100 mg
Active Ingredient
Flecainide acetate
Manufacturer
Orion Corporation
How to Use
Dosage
The usual dose is one 200 mg extended-release capsule once a day, but sometimes one 100 mg capsule per day is enough.
Method
Swallow the capsules whole with liquid. You can take Flecainide Orion with or without food.
Important
The maximum daily dose is two 200 mg extended-release capsules (400 mg/day).
Possible Side Effects
COMMON
- •Dizziness (usually temporary)
- •Vision problems (like double vision or blurred vision)
- •Heart rhythm problems
- •Shortness of breath
- •Weakness
- •Tiredness
- •Fever
- •Swelling
RARE
- •Nausea
- •Vomiting
- •Constipation
- •Stomach pain
- •Loss of appetite
- •Diarrhea
- •Heartburn
- •Gas
- •Allergic skin reactions (like rashes)
- •Hair loss
- •Decreased red blood cells, white blood cells, or platelets
- •Hallucinations
- •Depression
- •Confusion
- •Agitation
- •Memory loss
- •Insomnia
- •Sensory disturbances
- •Clumsiness (ataxia)
- •Reduced sensation (hypoesthesia)
- •Increased sweating
- •Fainting
- •Tremor
- •Facial flushing
- •Drowsiness
- •Headache
- •Nerve damage in arms/legs (peripheral neuropathy)
- •Seizures
- •Involuntary movements (dyskinesias)
- •Ringing in ears (tinnitus)
- •Dizziness (vertigo)
- •Lung inflammation
- •High liver enzyme levels (with or without jaundice)
- •Severe hives
- •Increased DNA antibodies (with or without body-wide inflammation)
- •Sensitivity to light
- •Corneal deposits in the eye
- •ECG changes (dose-dependent)
- •Heart conduction problems
- •Cardiac arrest
- •Slow or fast heart rate
- •Heart failure
- •Chest pain
- •Low blood pressure
- •Heart attack
- •Palpitations
- •Ventricular fibrillation (a serious heart rhythm problem)
- •Emergence of hidden Brugadan syndrome
- •Lung diseases (pulmonary fibrosis, interstitial lung disease)
- •Liver problems
- •Joint pain
- •Muscle pain
Important Warnings
- Do not take this medicine if you are allergic to flecainide or any other ingredients.
- Do not take this medicine if you have severe heart failure, very low blood pressure, or a slow heart rate.
- Do not take this medicine if you have Brugadan syndrome (a rare heart condition).
- Do not take this medicine if you have certain heart conduction problems (like sick sinus syndrome or AV block).
- Do not take this medicine if you have abnormal heart rhythms after a heart attack (like ventricular extrasystoles or tachycardia).
Show 6 more warnings
- Do not take this medicine if you have long-lasting atrial fibrillation that has not been converted to a normal rhythm.
- Do not take this medicine if you have severe heart valve disease.
- Tell your doctor if you have had a heart attack before or have structural heart disease.
- Tell your doctor if you have kidney or liver problems.
- This medicine is not recommended for children under 12 years of age.
- Like other heart rhythm medicines, Flecainide Orion can sometimes cause new heart rhythm problems.
Use in Elderly Patients
Category D
Avoid use in older adults. Start the treatment only in specialized care. Risk of QT prolongation. Reduce the dose in severe renal impairment. A significant adverse effect is torsades de pointes ventricular tachycardia. Consider the numerous potential interactions. (updated 19.5.2025)