Have you ever felt like your heart was racing, beating very fast without a rhythm, or just a strange fluttering in your chest? In medicine, this kind of irregular heartbeat is called arrhythmia. So, a special medicine that doctors recommend to treat this condition is Dronedarone. Today, let's talk about this medicine in simple terms.
What is Dronedarone?
Simply put, dronedarone is a medicine that controls your fast or irregular heartbeat. Our heart beats through a system of electrical signals. Sometimes, the activity of this signal system can increase slightly. That's when the heartbeat becomes irregular. So, what this dronedarone medicine does is to control some of those unnecessary electrical signals and help the heart beat back to its normal rhythm. This medicine belongs to a group of drugs called antiarrhythmics . In Sri Lanka and around the world, it can be seen under the brand name `Multaq`.
Things you need to tell your doctor before taking this medicine
This is very important. Before you start using dronedarone, it is important to tell your doctor the following information. This medicine is not suitable for everyone.
- If you currently have or have had heart failure .
- If you have a history of other heart-related illnesses.
- If you have liver disease .
- If you have previously had problems with your liver or lungs after using the drug amiodarone .
- If a doctor has told you that you have low potassium or magnesium levels in your blood.
- If you have any other heart disease.
- If you have an allergy to dronedarone or any other medicine, food, or dye.
- If you are pregnant or trying to get pregnant.
- If you are a breastfeeding mother .
It is very important for your safety to talk to the doctor without hiding these things.
How exactly do you use this medicine?
When using this medicine, you must follow the doctor's instructions exactly.
- Take this pill with a glass of water.
- Usually, the doctor says to take one pill with breakfast and one pill with dinner . It is very important to take it with food.
- Never drink more than the amount prescribed by your doctor.
- The most important thing is not to stop taking this medication suddenly without your doctor's advice. Doing so may worsen your condition.
If you think you have taken too much of this medicine, immediately call the National Poisons Information Centre at the Colombo National Hospital or go to the Emergency Department (ETU) of the nearest hospital. Don't waste time.
Also, remember, this medicine has been prescribed for you only. Do not give it to someone else just because they have the same symptoms as you.
What to do if you miss a dose of medication?
It's different for everyone. If you forget to take a dose, take it as soon as you remember. However, if it's almost time for your next dose, skip the missed dose and take your next dose at the scheduled time. Never take a double dose.
Other things that may interact with this medicine (Interactions)
This is something to be very careful about. Dronedarone is a drug that has a high potential for interaction with other medications and certain foods. Therefore, tell your doctor about all medications you are taking (including vitamins and herbal remedies).
Let's explain this further in the table below.
| What can cause problems? | Description and examples |
|---|---|
| Never take dronedarone with these | |
| Some antibiotics | Eg: clarithromycin, erythromycin, telithromycin |
| Antifungals | Eg: ketoconazole, itraconazole, voriconazole |
| Other heart rhythm medications | Eg: amiodarone, sotalol, quinidine, flecainide |
| Some antidepressants | Ex: tricyclic antidepressants, nefazodone |
| Ritonavir for HIV treatment | Ritonavir |
| These can also cause problems (use only under medical advice) | |
| Grapefruit juice | Avoid drinking jambola and jambola juice while taking this medicine. |
| Cholesterol-lowering drugs (Statins) | Ex: atorvastatin, lovastatin, simvastatin |
| Blood pressure or heart disease medication | Eg: diltiazem, verapamil, metoprolol, propranolol |
| Anticoagulants | Ex: Warfarin, Dabigatran |
| Other | Digoxin, St. John's Wort, Rifampin, Sirolimus, Tacrolimus |
This list is not complete, so it's best to inform your doctor about everything you're taking.
Things to keep in mind when taking medication
- When you start this medication, your doctor may keep you in the hospital for observation to see how your body responds to the medication.
- Throughout the time you are taking the medication, keep in regular contact with your doctor and attend clinics to monitor your condition.
- You may feel drowsy or dizzy while taking this medicine. Therefore, do not drive or operate machinery until you know how the medicine affects you.
- Getting up suddenly from a sitting position or from bed can cause dizziness and fall. Do these things slowly, especially if you are elderly.
What side effects might I experience?
Like any medicine, dronedarone can cause side effects. Some are serious, some are common.
| If you experience these symptoms, tell your doctor immediately. | |
|---|---|
| Allergic reactions | Skin rash, itching, swelling of the face, lips, tongue or throat. |
| Heart failure worsening | Difficulty breathing, swelling of the ankles, feet or hands, sudden weight gain, extreme fatigue. |
| Liver injury | Pain in the right side of the stomach, loss of appetite, nausea, yellowing of the skin or eyes, dark yellow/brown urine. |
| Lung injury | Difficulty breathing, cough, chest pain, fever. |
| Kidney injury | Decreased urine output compared to the amount of water consumed, swelling of the ankles, hands, or feet. |
| Very slow heartbeat | Dizziness, feeling faint, extreme fatigue. |
| It's usually not serious, but if it persists, tell your doctor. | |
| Stomach pain | Diarrhea |
| Nausea | Vomiting |
Take-Home Message
- Always take Dronedarone tablets with breakfast and dinner.
- Never stop taking medication or change the dosage without your doctor's advice.
- Tell your doctor about all other medications, vitamins, and herbal products you are taking.
- If you experience any serious side effects such as difficulty breathing, body swelling, or yellowing of the skin, seek medical advice immediately.
- Avoid grapefruit and grapefruit juice completely while taking this medication.
- If you miss a dose, never take two doses at once.
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