Do you also have high blood pressure, or what many people call 'high pressure'? If so, your doctor may have prescribed you a medication called Penbutolol. Many people use this type of medication for a long time, but may not be fully aware of it. So today, let's simply talk about what kind of medication Penbutolol is and what things to be careful about when using it.
What kind of medicine is Penbutolol?
Simply put, Penbutolol is a drug that belongs to the group of drugs called beta-blockers . The main thing that these drugs do is to reduce the load and pressure on our heart. Then the heart can beat more regularly and smoothly. For this reason, this drug is mainly used to control high blood pressure . Sometimes doctors may prescribe it for other medical conditions as well. Levatol is also a brand name for this drug.
Things you need to tell your doctor before taking medicine
Before starting this medication, it is very important to inform your doctor about any other medical conditions you have, as these conditions may affect the way this medication works.
| If you have these conditions... | Why is it important to tell the doctor? |
|---|---|
| Diabetes | This medicine can affect blood sugar levels. Also, some of the symptoms of low blood sugar (hypoglycemia) (e.g., rapid heartbeat) may be hidden by this medicine. |
| Heart or vessel disease | This medicine should be used with caution if you have conditions such as slow heartbeat, heart conditions, or Raynaud's disease. |
| Kidney disease | Since the medication is eliminated from the body through the kidneys, the dosage may need to be adjusted if kidney function is impaired. |
| Lung or breathing disease | If you have conditions such as asthma or emphysema, this medicine may increase your breathing difficulties. |
| Other medical conditions | Also tell your doctor about conditions such as pheochromocytoma (a tumor of the adrenal glands) and thyroid disease. |
| Allergies | Be sure to mention if you have an allergy to penbutolol or any other beta-blocker, food, or dye. |
| Pregnancy or breastfeeding | It is very important to inform your doctor if you are pregnant, trying to get pregnant, or breastfeeding. |
How should I use this medicine?
This is very simple. Take the right dose, at the right time, exactly as the doctor prescribed.
- Swallow the pill whole with a glass of water.
- Get into the habit of taking your medicine at the same time every day. That way, you're less likely to forget.
- Do not give this medicine to children without the advice of a pediatrician.
The most important thing is, do not stop taking this medication suddenly without your doctor's advice. Doing so can cause serious heart problems. If you do stop, do so according to your doctor's advice, gradually reducing the dosage.
What if you take too much medicine? (Overdosage)
If you think you have taken too much medicine, do not panic and immediately call the National Poisons Information Centre at the Colombo National Hospital . Or go to the Emergency Treatment Unit (ETU) of the nearest hospital.
This medicine has been prescribed for you only. The doctor has prescribed it based on your medical condition and body type. Therefore, never share this medicine with others.
What if I miss a dose of medication?
Take the missed dose as soon as you remember. However, if it is almost time for your next dose, skip the missed dose and take the next dose at the scheduled time. Never take a double dose.
Other things that may interact with this medicine (Interactions)
Penbutolol can interact with other medications, vitamins, and herbal remedies you may be taking. So it's important to tell your doctor about everything you're taking. Be especially careful with these:
- Other blood pressure medications or heart disease medications: Taking these together can cause your blood pressure to drop unnecessarily.
- Painkillers (NSAIDs): Medications like Ibuprofen and Naproxen may reduce the effectiveness of Penbutolol.
- Diuretics
- Anesthesia medication for surgery
- Stimulants: Substances found in some cold medicines, such as pseudoephedrine.
- Alcohol, smoking, and illegal drugs: These can interfere with the effectiveness of the medication.
Things to keep in mind when taking medication
- Regular check-ups: Visit your doctor on regular dates to check your condition. If you are checking your blood pressure at home, ask what your normal blood pressure level should be and when you should call your doctor .
- Drowsiness/Dizziness: You may feel drowsy or dizzy. Avoid driving or operating machinery until you know how this medicine affects you. Be careful when getting up suddenly from a standing position or from a sitting position.
- Diabetics: If you are diabetic, check your blood sugar levels frequently as this medicine may affect your blood sugar levels.
- Other medications: Do not take over-the-counter medications for coughs, colds, or pain without consulting your doctor. Some of the ingredients in these medications can increase your blood pressure.
Possible side effects
Like any medicine, Penbutolol can cause side effects in some people. Some are serious, while others are mild.
| Type of side effect | Characteristics |
|---|---|
| Symptoms that should be reported to your doctor immediately | |
| Allergic reactions | Skin rash, itching, swelling of the face, lips, tongue. |
| Breathing difficulties | Difficulty breathing, wheezing. |
| Changes in heart rate | Heartbeat that is too fast, irregular, or too slow, chest pain. |
| Other serious symptoms | Severe dizziness, fainting, confusion, depression, vision changes, cold or numb hands and feet, sudden weight gain, swelling of the ankles or legs. |
| Symptoms of high blood sugar | Thirst or hunger more than usual, needing to urinate more often, extreme fatigue, blurred vision. |
| Usually not serious (but tell your doctor if it persists) | |
| Minor side effects | Headache, stomach upset, diarrhea, insomnia or nightmares, extreme fatigue, anxiety, changes in sexual function. |
How should you store your medicine?
- Keep it in a safe place out of the reach of children .
- Store tightly closed at room temperature (between 20 and 25 degrees Celsius) and protected from light.
- Discard any medicine left after the expiration date .
Take-Home Message
- Penbutolol is a beta-blocker medication used to treat high blood pressure. It reduces the workload of the heart and makes it work more easily.
- Do not stop taking this medicine suddenly without medical advice. It can be dangerous.
- Tell your doctor about all other medications you are taking and any other medical conditions you have.
- Be aware of side effects such as fainting, difficulty breathing, and chest pain. If any of these occur, seek medical advice immediately.
- If you miss a dose, do not take two doses at the same time the next time.
- Always follow your doctor's instructions exactly.


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