Has your doctor prescribed you a liquid medicine called Calcitriol? It could be because of some weakness in your kidneys or a problem with your parathyroid gland. You might be a little scared when you hear this name. But don't worry. Today, we'll talk very simply and politely about what it really is, what it's used for, and what special precautions we need to take when using this medicine.
Simply put, what is Calcitriol?
Calcitriol is actually a special, active form of vitamin D. Think of it this way, the normal vitamin D we get from food or sunlight is just like dough. Our bodies, especially our kidneys, have to 'knead and bake' this dough into a usable 'bread'. Only then can the body benefit from it.
However, the body of someone with kidney disease is unable to properly synthesize this 'bread', that is, active vitamin D. That is when doctors prescribe a medicine called Calcitriol. That is, we directly administer the active vitamin D that is difficult for the body to synthesize .
This does two main things:
1. It increases the calcium levels in your body and helps keep your bones strong.
2. It also helps control parathyroid hormone levels.
Things you need to tell your doctor before using this medicine
Before you start using this medication, it is very important to talk about these issues clearly and honestly with your doctor.
The more complete a description of your health condition you provide to your doctor, the more successful and safe your treatment will be.
- About other kidney diseases you currently have.
- About parathyroid disease .
- If you are currently undergoing dialysis, please let us know.
- If you have an allergy to vitamin D, any other medicine, food, or preservatives, tell us about it.
- If you are pregnant, trying to get pregnant, or breastfeeding, you should definitely tell your doctor .
How to use the medicine correctly?
The method of using this medicine is very simple, but it is very important to follow the instructions exactly.
- Take this medicine with a glass of water. It doesn't matter whether you take it before or after a meal.
- Most importantly: Use only the special spoon, cup, or dropper provided to measure the medicine. Never use household teaspoons or coffee spoons, as they may not measure accurately and may cause the dose you receive to be different.
- Take the medicine at the prescribed time and at the prescribed intervals as prescribed by your doctor. Never take more than the prescribed amount.
What to do if you miss a dose of medication?
If you forget to take a dose, take it as soon as you remember. However, if it is almost time for your next dose, skip the missed dose and take your next dose at the scheduled time. Do not take a double dose for any reason.
What if I take too much medicine? (Overdose)
This can be very dangerous. If you think you have taken too much medicine, go to the nearest hospital Emergency Department (ETU) immediately. Or call the National Poisons Information Centre at the Colombo National Hospital for advice.
Other things that may interact with this medicine (Interactions)
Calcitriol can interact with some other medications and supplements, so it's important to tell your doctor about everything you're taking.
| Things not to take with Calcitriol | |
|---|---|
| Burosumab | Any other type of vitamin D or supplement |
| Be sure to tell your doctor if you are using these. | |
| Calcium supplements | Cholestyramine |
| Types of corticosteroids | Digoxin |
| Ketoconazole | Magnesium supplements |
| Phenobarbital, Phenytoin | Phosphate-binding agents |
| Some antacids | Thiazide diuretics |
This list is not exhaustive. So tell your doctor about all medications, herbal remedies, vitamins, and herbal supplements you are taking, as well as whether you smoke or drink alcohol.
Possible side effects while taking the medicine
Like any medicine, Calcitriol can cause side effects in some people. Some of these can be serious, so it's important to be aware of them.
| 🚨 Side effects that should be reported to the doctor immediately | |
|---|---|
| Allergic reactions | Skin rash, itching, swelling of the face, lips, tongue or throat. |
| Changes in heart rate | Fast or irregular heartbeat, dizziness, fainting, chest pain, difficulty breathing. |
| Increased calcium levels | More thirst or urination than usual, nausea, vomiting, confusion, unusual weakness, bone pain. |
| Increased phosphorus levels | Muscle or joint pain, weakness, numbness around the mouth. |
| 🙂 Tell your doctor if it persists or is bothersome. | |
| Dry mouth | Headache |
| Appetite | Feeling a metallic taste in the mouth |
| Stomach ache | |
Other important things to keep in mind while taking the medicine
- Attend scheduled clinics: Your doctor will order regular blood tests to monitor your progress and check your calcium and phosphorus levels. Don't skip these tests and clinic dates.
- Special diet: You may need to follow a special diet while taking this medicine. Do not take any other supplements or medications containing calcium, phosphorus, magnesium, or vitamin D without your doctor's advice.
How to store medicine safely?
- Keep out of reach of children and pets .
- Store at room temperature (between 15 and 30 degrees Celsius).
- Protect from direct sunlight and light.
- Close the bottle cap tightly after use.
- Throw away expired medicine.
Take-Home Message
- Calcitriol is a special, active form of vitamin D that is given for calcium deficiencies caused by kidney disease and problems with the parathyroid glands.
- Use only the special measuring device that comes with the medicine. Do not use household spoons.
- Tell your doctor about all other medications, vitamins, and supplements you are taking.
- Follow the blood tests and dietary restrictions prescribed by your doctor without fail.
- If you notice a serious side effect such as a change in heart rate, confusion, or suspect an overdose, go to a hospital's Emergency Department (ETU) immediately.


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