Has your doctor prescribed you a medicine called Chlorthalidone for high blood pressure or swelling in your body? If so, this article will be very important for you. Maybe your mother, father, or someone in your family is using this medicine. Let's talk about this medicine, what it does to the body, what to be careful about while using it, and its side effects in a very simple and friendly way.
What really happens with this medicine?
Simply put, some people call this a "water pill." To be precise, it belongs to a class of drugs called diuretics. It does a very simple thing. The main function of this drug is to give a small signal to our kidneys to excrete the excess water and salt that has accumulated in our body's blood through urine.
Imagine a system with a lot of water pipes that is under high pressure. If we remove some water from it, the pressure will decrease, right? That's how it is. If we reduce the amount of fluid in the blood vessels, the pressure inside the blood vessels, that is, high blood pressure, will decrease .
In addition, some people with certain heart, kidney, or liver conditions can experience swelling in their legs and ankles. This medicine also helps reduce swelling by removing excess water from the body.
Things you need to tell your doctor before taking this medicine
Before your doctor prescribes this medicine for you, he or she needs to have a complete picture of your health. Therefore, if you have any of the conditions listed below, be sure to tell your doctor about it. Don't hide these things, as they are very important for your own safety.
| Health condition or opportunity | Why should you notify? |
|---|---|
| Diabetes or high blood sugar levels | This medicine can affect blood sugar levels. |
| Gout | The drug can increase uric acid levels and aggravate gout. |
| Kidney disease | Since the medicine works through the kidneys, caution should be exercised in the event of an existing medical condition. |
| Liver disease | Special attention is needed as it can affect the body's fluid and salt balance. |
| Respiratory diseases such as asthma | Some people may be more prone to allergies. |
| Lupus disease | There is a small chance that this condition will worsen. |
| Allergies to medicines, food or other things | It is very important to inform your doctor if you have any allergies, especially to medications containing sulfa. |
| If you are pregnant or trying to get pregnant | Medical advice is essential regarding the use of this medicine during pregnancy. |
| If you are a breastfeeding mother (Breast-feeding) | You should discuss with your doctor the possibility of the medication passing to your baby through breast milk. |
How should I use the medicine?
- This medicine is taken by mouth. It is best to take it at the same time every day , with a meal. Take the exact dose as your doctor tells you.
- Do not stop taking your medication until your doctor tells you to. Even if you feel better, your blood pressure may be controlled because of the medication.
- If given to children: Children may need special care when giving this medicine. Talk to your doctor about this.
What if I take too much medicine?
If you suddenly have the slightest suspicion that you have taken too much of this medicine, do not panic. Immediately call the National Poisons Information Centre at the Colombo National Hospital . Or go to the Emergency Treatment Unit (ETU) of the nearest hospital.
What if I miss a dose of medication?
If you forget to take a dose, take it as soon as you remember. But if it is almost time for your next dose, skip the missed dose and take your next dose at the scheduled time. Never take a double dose.
Most importantly: This medicine has been prescribed for you only. Do not give it to anyone else who has the same symptoms as you.
Other things that may interact with this medicine
Some other medications you are taking may interact with Chlorthalidone and affect the way it works. Therefore, it is very important to tell your doctor about all the medications you are taking.
| Type of medicine/substance | Why should you care? |
|---|---|
| Barbiturate-type medications used for sleep or epilepsy | Dizziness and low blood pressure may occur. |
| Heart disease medications such as Digoxin | Decreased potassium levels in the body may increase the side effects of Digoxin. |
| Lithium (for mental illness) | It can reduce the excretion of lithium from the body and increase its toxicity. |
| Medications for diabetes | Because blood sugar levels may change, the dosage of diabetes medication may need to be adjusted. |
| Other high blood pressure medications | Blood pressure may drop unnecessarily. |
| Some painkillers (e.g. Ibuprofen, Naproxen) | The effectiveness of clothalidone may be reduced. |
| Steroid hormones (e.g. Prednisone, Cortisone) | The body's potassium levels may decrease further. |
This list is not complete. Tell your doctor about all medications, herbs, vitamins, and supplements you take, as well as if you smoke or drink alcohol.
Things to keep in mind when taking medication
- Regular check-ups: Visit your doctor on regular dates to get your condition checked. Ask your doctor about how to measure your blood pressure at home and what your blood pressure should be.
- Be aware of dehydration: If you have excessive diarrhea, vomiting, or sweating, it can be dangerous to take this medicine as it can cause dehydration. Talk to your doctor if this happens.
- Food and fluids: You may be told to follow a special diet, such as a low-salt diet. Also ask your doctor about how much water you should drink per day.
- Taking medication for other illnesses: While you are taking this medicine, do not take over-the-counter medications for cough, cold, or pain. Some medications can increase your blood pressure. Consult your doctor before taking anything.
- Dizziness and drowsiness: This medicine may make you feel a little drowsy or dizzy. Therefore, do not drive or operate machinery until you know how this medicine affects you. Especially if you are an elderly person, do not get up suddenly from a sitting position or from bed. Get up slowly. This will reduce the risk of dizziness and falls. Avoid drinking alcohol, as it can make this condition worse.
What side effects might I experience?
Like all medicines, Clothalidone can cause side effects in some people, although not everyone gets them. Below is a list of possible side effects.
| Side effect | Symptoms |
|---|---|
| Side effects that you should report to your doctor immediately | |
| Allergic reactions | Skin rash, itching, swelling of the lips, tongue, face, difficulty breathing. |
| Dehydration | Excessive thirst, dry mouth, dizziness, headache, dark yellow/brown urine. |
| Gout flare-up | Severe pain, redness, swelling, and warmth in the joints (especially the big toe). |
| Kidney injury | Decreased urine output, swelling of the ankles, hands, and feet. |
| Low blood pressure | Dizziness, fainting, blurred vision. |
| Low potassium level in the blood | Muscle twitching or pain, unusual weakness, fast or irregular heartbeat, constipation. |
| Eye pain or vision changes | Sudden eye pain, blurred vision, seeing rings around lights, loss of vision. |
| Things to tell your doctor if they persist or are bothersome | |
| Changes in sexual function | Decreased sexual desire or change in function. |
| Headache | Minor headache. |
| Stomach upset | Mild stomach upset or discomfort. |
Take-Home Message
- Take your medicine exactly as your doctor prescribes, in the right dose, and at the right time. Do not stop taking your medicine without medical advice, even if you feel better.
- Be sure to tell your doctor about any other medical conditions you have (especially diabetes, gout, kidney disease) and all other medications you are taking.
- Be aware of dizziness and fainting. Be careful when changing positions (from sitting to standing), especially if you are elderly. Avoid drinking alcohol.
- If you experience any severe side effects such as allergic reactions, severe joint pain, or changes in vision, seek medical advice immediately.
- It is very important to see the doctor on scheduled days and have your blood pressure checked and any necessary tests performed.
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