Has your doctor prescribed you or someone in your family the drug Digoxin? If so, it's normal to feel a little curious, and perhaps even nervous, about this drug. Because this is a very important drug, and one that should be used with great caution. So don't worry. In this article, we'll talk about exactly what Digoxin is, what it does, and what we need to be careful about when using it.
Simply put, what is Digoxin?
Digoxin is a very old drug. It is made from a flowering plant called foxglove. It belongs to a class of drugs called cardiac glycosides .
Usually, when starting treatment for heart disease, doctors first prescribe other medications. We call them 'first-line drugs.' Digoxin is prescribed if those medications don't work as expected, or if another medication is needed.
The doctor mainly recommends this medicine for the following heart conditions:
- Heart failure: This is when the heart is unable to pump enough blood to the body.
- Atrial flutter: A condition in which the upper chambers of the heart (atria) beat very rapidly.
- Atrial fibrillation (Afib): A condition in which the upper chambers of the heart beat irregularly and rapidly.
What does digoxin do to our heart?
Think of our heart as a water pump. Sometimes this pump becomes weak and cannot pump water properly. The drug digoxin does two main things.
1. Helps the heart muscle contract more strongly: This allows the weakened heart to pump more blood to the body at once. It's like giving the weakened pump more power.
2. Regulates and slows the heart rate: Especially in conditions like Afib, the heart beats very fast and irregularly. Digoxin works by slowing down the electrical signals that control the heart rate. This allows the heart to beat more slowly and more regularly.
Simply put, digoxin is like a smart manager that increases the pumping efficiency of the heart and controls its speed.
What are the benefits of this medicine?
Digoxin has many benefits for patients if used properly.
- It can reduce the number of hospitalizations due to heart disease.
- It helps reduce symptoms of heart failure, such as fatigue and shortness of breath.
- The quality of life of patients can be improved.
- Heart rate can be controlled in people with conditions like Afib.
Are we also aware of the side effects?
Like any medication, digoxin can have side effects. Not everyone gets them, but it's important to be aware of them.
| Type of side effect | Description |
|---|---|
| Digestive system problems | Stomach upset, nausea, vomiting, flatulence. |
| Nervous system problems | Dizziness , lightheadedness, drowsiness, headache. |
| Vision changes | Things appear blurry, yellow, or green. This could be a sign of poisoning. |
| Other side effects | Skin rash, breast enlargement in men (gynecomastia). |
| Heart-related problems | Abnormal heart rhythms (arrhythmias), very slow heartbeats (heart block). These can be serious. |
Digoxin Toxicity - Where we need to be most careful!
When talking about digoxin, one thing we definitely need to know is about digoxin toxicity . This occurs when the level of digoxin in the blood increases beyond what the body can tolerate.
This is like walking a tightrope. There is a very small difference between the level at which a medicine is beneficial and the level at which it is toxic to the body. Therefore, it is extremely important to take the dose exactly as prescribed by the doctor.
Things that can increase digoxin levels
Some foods, other medications, and health conditions can change the levels of digoxin in our body.
- Diet: Eating foods high in fiber or taking fiber supplements.
- Other medications: Medicines for certain infections (macrolides), metoclopramide for nausea, antacids for gastritis, and some cholesterol-lowering medications.
- Kidney function: Digoxin is eliminated from the body primarily by the kidneys, so a person with kidney disease is at higher risk of digoxin toxicity.
As we age, our kidney function naturally decreases a little. Therefore, it takes longer for this medicine to be eliminated from the body of an older person. Therefore, the doctor will take all of this into account when determining the dose.
How are digoxin levels checked?
About a week after you start taking digoxin, your doctor will ask you to have a blood test. This will check the level of digoxin in your blood. This test is usually done 6-8 hours after taking the medicine. You will need to have this test at regular intervals after that. Don't skip these tests. It is very important for your safety.
What are the symptoms of poisoning?
If the digoxin level in the blood exceeds 2.0 ng/mL (nanograms per milliliter), there is an increased risk of toxicity. A doctor can also get an idea of this by looking at changes in the electrical activity of the heart with an ECG (electrocardiogram) .
The main symptoms of poisoning:
- Severe nausea and vomiting
- Vision changes (things appear yellow/green, blurring, seeing halos around lights)
- Heartbeat abnormalities (very fast or pounding heartbeats, chest pain)
- Severe confusion
- Extreme fatigue and drowsiness
If these symptoms occur, it can be fatal. Therefore, you should immediately go to the emergency room (ETU) of the nearest hospital. Sometimes the potassium level in the blood can become dangerously high. We call this hyperkalemia .
In the event of digoxin poisoning, there is a special antidote that can reverse its effects. It is called digoxin immune fab . Therefore, early hospitalization can be life-saving.
If you suspect digoxin poisoning, you can also call the National Poisons Information Centre at the Colombo National Hospital for advice.
Things you can do to make treatment easier
Living with this medication doesn't have to be a challenge. If you take care of a few little things, everything can be made easier.
- Follow your doctor's instructions exactly: Take the prescribed dose, at the prescribed time. Never reduce, increase, or stop taking the medication at your own discretion.
- Don't miss blood tests: Go to your doctor's appointments and get your blood tested. This will help you determine if your digoxin levels are within safe limits.
- Be careful with other medications: Tell your doctor about any other medications, vitamins, and herbal remedies you are taking. Even some over-the-counter medications can interact with digoxin.
| If you have these symptoms, inform your doctor immediately! | |
|---|---|
| Difficulty breathing | Loss of appetite, nausea, or vomiting |
| Swelling of hands or feet | Any changes in vision (blurring, color changes) |
Digoxin is a valuable drug that can save lives if used properly. But you are responsible for using it safely. If you have any concerns or questions, talk to your doctor about them openly.
Take-Home Message
- Digoxin is a powerful drug used for heart disease that must be managed very carefully.
- There is a very small margin between the effective and toxic doses of this drug, so it is extremely important to follow medical advice.
- Never change the dosage or stop taking medication without your doctor's approval.
- Do not miss doctor appointments and blood tests on scheduled dates to check the level of digoxin in your blood.
- If symptoms of poisoning such as nausea, vomiting, vision changes, or heart rhythm abnormalities occur, seek medical advice immediately or go to the nearest hospital Emergency Department (ETU).
- Always inform your doctor about all other medications, vitamins, and supplements you are taking.
💬 අදහස් (0)
තවමත් කිසිදු අදහසක් පළ කර නොමැත. ඔබේ අදහස පළමු වරට මෙහි එක් කරන්න.
ඔබේ අදහස එක් කරන්න