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Flecainide Coupon - Flecainide 50mg tablet
FlecainideGeneric Tambocor
FLECAINIDE is an antiarrhythmic drug. This medicine is used to prevent irregular heart rhythm. It can also slow down fast heartbeats called tachycardia. The lowest GoodRx price for the most common version of flecainide is around $18.54, 78% off the average retail price of $86.23. Compare antiarrhythmics.
Prescription Settings
60 tablets
Flecainide Coupon - Flecainide 50mg tablet
60 tablets

Flecainide Side Effects

What should I watch for?

Visit your doctor or health care professional for regular checks on your progress. Because your condition and the use of this medicine carries some risk, it is a good idea to carry an identification card, necklace or bracelet with details of your condition, medications and doctor or health care professional.

Check your blood pressure and pulse rate regularly. Ask your health care professional what your blood pressure and pulse rate should be, and when you should contact him or her. Your doctor or health care professional also may schedule regular blood tests and electrocardiograms to check your progress.

You may get drowsy or dizzy. Do not drive, use machinery, or do anything that needs mental alertness until you know how this medicine affects you. Do not stand or sit up quickly, especially if you are an older patient. This reduces the risk of dizzy or fainting spells. Alcohol can make you more dizzy, increase flushing and rapid heartbeats. Avoid alcoholic drinks.


Common and Rare Side Effects

Along with its needed effects, a medicine may cause some unwanted effects. Although not all of these side effects may occur, if they do occur they may need medical attention.

Check with your doctor immediately if any of the following side effects occur:

More common

Difficult or labored breathing

dizziness, fainting, or lightheadedness

fast, irregular, pounding, or racing heartbeat or pulse

shortness of breath

tightness in the chest


Less common

Burning, crawling, itching, numbness, prickling, "pins and needles", or tingling feelings

chest pain


feeling of warmth


increased sweating

partial or slight paralysis

redness of the face, neck, arms, and occasionally, upper chest

shakiness and unsteady walk

shakiness in the legs, arms, hands, or feet

swelling of the feet or lower legs

trembling or shaking of the hands or feet

unsteadiness, trembling, or other problems with muscle control or coordination


Arm, back, or jaw pain

black, tarry stools

bleeding gums

blood in the urine or stools

blurred vision

chest discomfort

chest tightness or heaviness





decrease in the frequency of urination

decrease in urine volume

difficulty in passing urine (dribbling)

difficulty with breathing

dizziness, faintness, or lightheadedness when getting up suddenly from a lying or sitting position

frequent urination

general feeling of discomfort or illness


increased volume of pale, dilute urine



noisy breathing

painful or difficult urination

pinpoint red spots on the skin

pounding in the ears

sensation of pins and needles

slow or fast heartbeat

sore throat

sores, ulcers, or white spots on the lips or in the mouth

stabbing pain


swollen glands

thickening of bronchial secretions

troubled breathing

unusual bleeding or bruising

unusual tiredness or weakness

yellow eyes or skin

Some side effects may occur that usually do not need medical attention. These side effects may go away during treatment as your body adjusts to the medicine. Also, your health care professional may be able to tell you about ways to prevent or reduce some of these side effects. Check with your health care professional if any of the following side effects continue or are bothersome or if you have any questions about them:

More common

Blurred vision or seeing spots

Less common

Abdominal or stomach pain

acid or sour stomach

anxiety or mental depression



continuing ringing or buzzing or other unexplained noise in the ears



feeling of constant movement of self or surroundings

general feeling of discomfort or illness

hearing loss



lack or loss of strength

loss of appetite

sensation of spinning

sleepiness or unusual drowsiness


skin rash

stomach discomfort, upset, or pain

trouble with sleeping

unable to sleep

weight loss



change in color vision

change in taste

cracks in the skin

decreased awareness or responsiveness

decreased interest in sexual intercourse

difficulty seeing at night

difficulty with moving

dry mouth

excess air or gas in the stomach or intestines

eye pain or irritation

false or unusual sense of well-being

feeling of unreality

full feeling

hair loss or thinning of the hair

hives or welts

inability to have or keep an erection

increased sensitivity of the eyes to sunlight

itching skin

joint pain

lack of feeling or emotion

loss in sexual ability, desire, drive, or performance

loss of heat from the body

loss of memory

muscle aching or cramping

muscle pain or stiffness

passing gas

problems with memory

red, swollen skin

scaly skin

sense of detachment from self or body

severe sleepiness

swollen joints

swollen lips, mouth, or tongue

uncaring uncontrolled eye movements

Other side effects not listed may also occur in some patients. If you notice any other effects, check with your healthcare professional.

Call your doctor for medical advice about side effects. You may report side effects to the FDA at 1-800-FDA-1088.

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