Is your heart rhythm irregular? Let's learn about Dofetilide!

Has the doctor told you that there is a problem with your heart rhythm, that is, the speed of your heartbeat? You must have felt a little scared, right? Dofetilide is a type of medicine that is given at such times. So, today we will talk about this medicine called Dofetilide, as if we were telling a friend.

What is Dofetilide?

Simply put, Dofetilide is an antiarrhythmic medication . This means that it helps to normalize your heart rhythm. It often comes in the form of a capsule. It is usually taken once or twice a day. You may have seen it under the brand name Tikosyn®.

But there is one thing to remember. The dosage of this medicine, that is, the amount you are given to drink, can vary from person to person . If your friend is taking this medicine, you will not be given the same amount as he is given. The doctor will assess your condition and prescribe the right dose for you (such as `125 mcg, 250 mcg` or `500 mcg`). `(mcg)` stands for micrograms.

In what cases is Dofetilide used?

This medication is mainly used to treat certain heart rhythm problems and prevent them from recurring.

Heart rhythm disorders

• Atrial Fibrillation (Afib): This is when the upper chambers of your heart (also called the atria) beat rapidly and irregularly, rather than in a rhythmic pattern. Think of it like a drum that is supposed to be played in a certain way, but it beats out of tune and goes crazy. This is called ``Afib''.
• Atrial Flutter: This is another abnormal heartbeat pattern that occurs in the upper chambers of the heart. It is somewhat similar to ``Afib``, but there are some slight differences.

Important: In both of these conditions, the heart's function becomes irregular, so blood may not be pumped properly. This can lead to various complications. So, this medicine works by correcting that irregularity and making the heart work properly again.

"Off-label" uses

Sometimes doctors prescribe Dofetilide for other heart conditions besides its original use. This is called "off-label" use. That is, doctors know that the drug can help with those conditions, but it was not originally approved for those conditions.

Other similar heart rhythm disorders are:

• Ventricular Tachycardia: In this, the lower chambers of the heart beat very quickly.
• Supraventricular Tachycardias: This is also a rapid heartbeat that occurs in the upper chambers of the heart. There are other types besides `(Afib)` and `(Atrial Flutter).`
• Wolff-Parkinson-White Syndrome: This is a condition in which the heart beats faster due to an extra electrical pathway in the heart.

How to start Dofetilide?

This is a little special. When you start taking Dofetilide, you will have to stay in the hospital for about three to four days . This may sound a little strange, right? The reason is that the doctors want to watch how the medicine affects your heart rhythm and whether you develop any new problems. They will also use this time to find the right dose for you. While you are in the hospital, they may change the amount of medicine you are given. Don't worry, this is all for your safety.

How to take Dofetilide at home?

After you get home from the hospital, the prescription label you are given will clearly state how much to take and how many times a day you should take it.

It is very important to remember these points:

• Take the medicine exactly as the doctor tells you. Do not increase or decrease the dose.
• Take the medicine at the same time every day. If it's morning, take it in the morning, if it's night, take it at night. Don't change the time.
• Even if you feel better, don't stop taking the medicine. Keep taking it as long as your doctor tells you to.
• You can take this medicine with or without food.
• Don't skip your medication.
• Only take the amount prescribed by the doctor.

If you have any questions about your medication or how to get a refill, don't be afraid to ask your doctor or pharmacist. If there's something you don't understand, ask them to explain it.

What should I tell my doctor before taking Dofetilide?

Before prescribing this medication to you, it is important to tell your doctor the following:

• Have you ever had an allergic reaction to dofetilide? If so, please describe what happened.
• List all medications you are currently taking (prescription, over-the-counter (OTC), vitamins, and herbal supplements). Do not start any new medications or supplements without first consulting your doctor.
• Tell us if you have heart disease, especially a heart condition called `Long QT Syndrome` , or if you have kidney or liver disease, or if you have low levels of potassium or magnesium in your blood.
• Be sure to tell us if you are pregnant, trying to get pregnant, or breastfeeding .

What medications should not be taken with Dofetilide?

If you are taking these medications, taking Dofetilide can be very dangerous.Therefore, if you are using a medication like this, you should definitely tell your doctor. Then he will not give you Dofetilide.

• Cimetidine (e.g. Tagamet®)
• Cisapride
• Dolutegravir (`Dolutegravir` - e.g. `Tivicay®`)
• Verapamil (`Verapamil` - e.g. `Calan®`)
• Ketoconazole
• Itraconazole (e.g. Sporanox®)
• Trimethoprim (`Trimethoprim` - e.g. `Proloprim®`)
• Trimethoprim with sulfamethoxazole (e.g., Bactrim®, Septra®)
• Hydrochlorothiazide (`Hydrochlorothiazide` - e.g. `Microzide®`)
• Ziprasidone
• Tricyclic antidepressants like amitriptyline
• Promethazine
• Prochlorperazine (e.g., Compro®)
• Quinidine
• Disopyramide (e.g., Norpace®)
• Sotalol (`Sotalol` - e.g. `Betapace®`)

Other medicines that may interact with Dofetilide

There are other medications that can interact with Dofetilide. This means that if you take these medications together, they may change how Dofetilide works or increase its side effects. Therefore, if you are taking any of the medications listed below, talk to your doctor before starting Dofetilide.

• Amiodarone (`Amiodarone` - e.g. `Cordarone®`)
• Digoxin (`Digoxin` - e.g. `Lanoxin®`)
• Metformin (`Metformin` - e.g. `Glucophage®`)
• Megestrol
• Diltiazem (e.g. Cardizem®)
• Zafirlukast
• Quinine
• Fluconazole
• Erythromycin (`Erythromycin` - e.g. `PCE®`)
• Clarithromycin
• Fluoroquinolone antibiotics such as Norfloxacin and Moxifloxacin
• SSRIs (Selective Serotonin Reuptake Inhibitors) such as Fluoxetine, Sertraline, Paroxetine (e.g. Paxil®)
• Diuretics (medicines that remove water from the body) such as Furosemide, Triamterene, and Amiloride
• Protease inhibitors (medicines for diseases such as HIV) such as Indinavir

Just to be aware: Like some medications, drinking grapefruit juice (a fruit similar to a grapefruit) can increase the level of the drug dofetilide in your body. This can be dangerous. So, ask your doctor if it's okay to drink grapefruit juice while taking this medication.

What to do if you miss a dose of medication?

If this happens, take the missed dose as soon as you remember . However, if it is almost time for your next dose when you remember, skip the missed dose and take your next dose at the scheduled time. Never take a double dose. If you are unsure what to do, talk to your doctor or pharmacist.

What are the benefits of Dofetilide?

Dofetilide can help control some of the irregular heartbeats in your heart, which can make your life a little easier. However, it's important to remember that it doesn't cure the disease completely.

What are the side effects of Dofetilide?

Like any medicine, Dofetilide can cause some side effects. Not everybody gets them, but it's good to be aware of them.

Minor possible side effects:

• Chest pain
• Headache (headache)
• Dizziness (vertigo)
• Nausea (feeling like vomiting)
• Diarrhea (stomach ache)
• Stomach pain

Something to be very careful about:

Dofetilide is given to correct an irregular heartbeat, but there is a risk of another type of irregular heartbeat with this medication. In particular, a rapid heartbeat in the lower chambers of the heart (`ventricular tachycardia`) called ``Torsades de Pointes`` can occur.

This is the main reason why you need to be hospitalized and started on medication! The doctors want to monitor you closely for this dangerous, abnormal heartbeat.

How soon will I feel better after starting the medication?

Dofetilide takes about two to three hours to start working. However, even if you feel better, do not stop taking the medicine until your doctor tells you to. Keep taking it.

How can I take care of my health while taking Dofetilide?

There are a few things you need to do on your part while taking this medicine.

• Be sure to go to all your appointments with your doctor, including lab tests. That's when you can see how the medication is affecting you.
• You will probably need to have an electrocardiogram (EKG) test about every six months . This will check the rate and rhythm of your heart beat.
• They may also order blood tests to see if the medication dosage needs to be changed.
• Always read the information leaflet that comes with your medicine, especially if there have been any recent changes to your medicine or health condition. Ask your pharmacist if you have any questions.

More things you can do:

• If you are having any surgical procedure, dental procedure, or emergency treatment, tell the doctor or dentist that you are taking Dofetilide.
• You may also need to wear an identification card stating that you are taking Dofetilide.
• Never stop taking this medication without asking your doctor.
• Follow your doctor's advice about food and drink, especially alcoholic beverages.
• Always keep enough medicine with you. Before going on vacation or traveling, check to see if your medicine is running low. Otherwise, you may not be able to find it in an emergency.

When should you see a doctor?

If you experience any of these symptoms, call your doctor immediately or go to an emergency room:

• Fast or irregular heartbeat.
• Feeling like your heart is beating fast, feeling like your heartbeat is racing.
• Chest pain.
• Dizziness or feeling lightheaded (`lightheadedness`).
• Difficulty breathing.
• Severe diarrhea.
• Vomiting with loss of appetite.
• Unusual sweating.
• Increased thirst for water.
• Skin rash.

Even if there are less serious side effects like these, talk to your doctor if they bother you:

• Headache.
• Insomnia.
• Any other side effects that bother you.

Where can I buy Dofetilide?

Dofetilide is not available in all pharmacies. Therefore, call your nearest pharmacy to see if they have it. If you are having trouble finding the medication, talk to your doctor.

How to store Dofetilide?

• Store Dofetilide in a tightly closed container, at room temperature, in a dry place .
• Do not place in direct sunlight or in hot places.
• Do not store this medicine in places with high humidity, such as the bathroom. Moisture can destroy the properties of the medicine.
• Keep not only this medicine, but all other medicines out of the reach of children.
• Never share your medicine with anyone else.
• Never use expired medicine. Some medicine packages have an expiration date printed on them. Or, if you're not sure how old the medicine is, call your pharmacy and ask.

Finally, things to remember

It can be really distressing to know that you have a heart rhythm problem. However, if your doctor has prescribed Dofetilide for you, it can help you. The most important thing is to follow the doctor's instructions and the instructions on the medicine package exactly. If you have any further questions or concerns about this medicine, do not hesitate to ask your doctor or pharmacist. They will be able to help you.

` Dofetilide, Heart palpitations, Arrhythmia, Atrial fibrillation, Atrial flutter, Tikosyn, Heart disease