Common side effects include:
For infants and young children, blood tests may be required to monitor the level of flecainide. A gene test may also be required to guide drug dosing and for making dose adjustments.
It is very important that you are on regular follow-up with your doctor to monitor for any possible side effects. Inform your healthcare professional if you have any of the following side-effects.
This medication may worsen existing abnormal heart rhythm, or cause new irregular heartbeats. Symptoms of abnormal heart rhythm include one or more of the following:
The symptoms of a drug allergy include one or more of the following:
If you experience any of these symptoms, you should stop your medication and see your healthcare professional immediately.
Inform your healthcare professional if:
Some medications may interact with Flecainide and affect their effectiveness or increase the risk of side-effects. However, these medications may also be important for your treatment. Inform your healthcare professional of the other medications you are currently taking. Examples include:
Consult your healthcare professional if you are unsure whether your existing medications can be taken together with this medication.