When your heart suddenly feels very fast or irregular, has the doctor told you to give an injection? Maybe that injection is Propranolol. This is a medicine that is usually given to control the heartbeat in an emergency. So, don't be afraid. Today, we will talk about this Propranolol injection in simple terms, what it does, and what you need to be careful about.
What kind of medicine is Propranolol?
Simply put, Propranolol is a medication that slows down your heart rate and reduces the pressure and strain on your heart. Think of your heart as a marathon runner who is running hard. Propranolol helps the runner breathe a little and control his pace.
This medicine belongs to a group of drugs called 'Beta-blockers' . These mainly control the heart rate and blood pressure. Therefore, this Propranolol injection is used to treat cases of rapid or irregular heartbeat (arrhythmia) .
Things you need to tell your doctor before using this medicine
This is very important. Before giving you Propranolol injection, your doctor will need to know your complete medical history. This is because some conditions require special care when using this medication.
Therefore, tell your doctor about any illness you have or any medication you take, without hiding anything.
Be sure to inform your doctor about the things in the table below.
| Health condition/problem | Things to pay special attention to |
|---|---|
| Heart disease | If you have had a previous heart attack, weak heart function, slow heart rate, or other heart conditions. |
| Lung or respiratory disease | Conditions like asthma or emphysema. |
| Diabetes | Propranolol can mask some of the symptoms of low blood sugar (hypoglycemia). |
| Liver or kidney disease | Because these affect the process of removing the medicine from the body. |
| Thyroid disease | This medicine may also mask some symptoms of increased thyroid hormone levels. |
| Other situations | If you have circulation problems, a condition called pheochromocytoma, or allergies to any other medicine, food, or dye. |
| Pregnancy and breastfeeding | If you are pregnant, trying to get pregnant, or breastfeeding, be sure to tell your doctor about this. |
How to use Propranolol?
This medicine is not a pill that you usually take at home. Propranolol injection is an intravenous medicine . This means that it is given in a hospital or clinic under the supervision of medical staff. Therefore, you will not be given this medicine to take home.
Overdose
Since this is given in a hospital, the chances of this happening are very low. However, if you think you have overdosed on the medicine in any way, you should inform the medical staff immediately. In general, if you overdose on any medicine, the best thing to do is to immediately call the National Poisons Information Centre at the Colombo National Hospital . Or, go to the nearest hospital Emergency Department (ETU) as soon as possible.
Remember, this medicine has been prescribed for you only. Never share it with anyone else.
Other drugs that may interact with this medicine (Drug Interactions)
Propranolol can interact with many other medications. Therefore, it is very important to tell your doctor about all the medications you are taking, including prescription medications, over-the-counter medications, herbal remedies, and vitamins.
Taking Propranolol with certain medications can have dangerous effects. Therefore, if you are using any of the medications listed below, be sure to tell your doctor about it.
| Drug category | Examples |
|---|---|
| Drugs that can be particularly problematic | |
| Medications for some mental illnesses | Phenothiazines, such as Thioridazine and Chlorpromazine. |
| Other medications that may cause problems | |
| Other medications for blood pressure and heart disease | Other beta-blockers, calcium channel blockers. |
| Medicines for pain and swelling | NSAIDs (e.g. Ibuprofen, Naproxen, Diclofenac). |
| Medicines to take for migraines | Medications such as Sumatriptan and Rizatriptan. |
| Medications for depression | Different types of antidepressants. |
| Other medications | Cimetidine, Diazepam, Warfarin, Theophylline, HIV medications, cholesterol-lowering medications. |
This list is not complete, so it's safest to tell your doctor about all the medications you take.
Side effects that may occur when taking medication
Like any medicine, Propranolol can cause some side effects. Since this medicine is given in a hospital, your condition will be monitored closely by the medical staff. However, if you notice anything unusual, you should report it immediately.
| Side effects that should be reported to the doctor or nurse immediately | |
|---|---|
| Allergic reactions | Skin rash, itching, swelling of the face, lips, tongue or throat. |
| Symptoms of heart failure | Difficulty breathing, swelling of the ankles, feet, or hands, sudden weight gain, unusual tiredness. |
| Very slow heartbeat | Dizziness , fainting, lightheadedness, difficulty breathing. |
| Low blood pressure | Dizziness , blue eyes, fainting. |
| Raynaud's phenomenon | Fingers become cold, numb, painful, turn white, blue, or red. |
| Change in mental status | Increased depression, depressed mood. |
| Things that are usually not serious, but should be reported to the doctor if they persist | |
| Other minor ailments | Dizziness , fatigue, headache, diarrhea. |
Talk to your doctor about any other unusual symptoms not mentioned on this list.
Take-Home Message
- Propranolol injection is a special medicine given in a hospital to control a fast or irregular heartbeat.
- Before you are given this medicine, be sure to tell your doctor about all your medical conditions and all medications you are taking (including traditional medicines).
- If you experience any unusual changes in your body (especially difficulty breathing, dizziness, skin rash) while taking the medicine, inform the medical staff immediately.
- This medicine is not for use outside of the hospital. Also, it has been prescribed for you only.
- If you have any questions about any medication, don't be afraid to ask your doctor. It's your right.
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