Sometimes after major surgery, for example, after surgery on the knee, hip, or stomach, there is a higher chance of blood clots forming in the veins inside our bodies. Similarly, when blood clots form in the lungs or veins in the legs, special medications are needed to treat them. In such cases, a special injection called Fondaparinux is given to you by your doctor. Today, we will talk about this medicine, how it works, and what you need to be careful about when using it.
What kind of medicine is Fondaparinux?
Simply put, Fondaparinux is an anticoagulant, or as we call it, a "blood thinner." But rather than actually thinning the blood, it actually controls some of the natural processes that help blood clot.
This has two main functions:
1. Preventing blood clots: This is used to reduce the risk of blood clots forming in the veins, especially after major surgery on the knees, hips, or abdomen.
2. Treating existing blood clots: This medicine is also given to prevent blood clots that have formed in the lungs (pulmonary embolism) or deep veins of the legs (deep vein thrombosis) from getting bigger and to gradually dissolve them.
Things you need to tell your doctor before using this medicine
It is very important that your doctor is fully aware of your health condition before starting this medication. Because this is a medication that affects blood clotting, using it with certain medical conditions can be risky. Therefore, if you have any of these conditions, be sure to tell your doctor.
- If you have a bleeding disorder, hemorrhage, or hemophilia.
- If you have an infection of the heart or heart valves.
- If you have kidney or liver disease .
- If you have had a previous stroke .
- If you have recently had surgery or given birth.
- If you have a stomach ulcer, diverticulitis, or other similar intestinal disease.
- If you have an allergic reaction to Fondaparinux, heparin, low molecular weight heparins, or other medicines, foods, or dyes.
- If you are pregnant, trying to get pregnant, or breastfeeding .
How is this vaccine used?
This is a subcutaneous injection. This vaccine is usually given to you by a healthcare professional in a hospital or clinic.
But sometimes you may need to use this at home. If so, you will be taught how to prepare this vaccine and how to inject it correctly. You need to be very careful to use the correct dose, at the right time, as your doctor tells you . Don't forget to get a new dose before the medicine runs out. Don't stop taking this medicine suddenly without your doctor's advice, as doing so may increase your risk of blood clots again.
Very important: Never throw used needles and syringes in the trash. They should be placed in a special sharps container provided. If you don't have one, ask your doctor about how to get one.
What to do if you take too much medicine?
If you think you have taken too much of this medicine, go to the nearest Emergency Department (ETU) immediately. Or call the National Poisons Information Centre at the Colombo National Hospital for advice.
What if I miss a dose?
If you miss 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. Never take two doses at once.
Other medications that may interact with this medicine
Fondaparinux is a medication that affects blood clotting, and taking it with other medications that have this effect can greatly increase the risk of bleeding. So it's important to be aware of this.
| Drug type / category | Description and examples |
|---|---|
| Medicines that should never be taken | These can cause serious bleeding when used with Fondaparinux. Medications like Aspirin, Heparin, Warfarin, Mifepristone. |
| Other medications that may interact | Close supervision by a doctor is required when taking Fondaparinux with these medications. Examples: Nonsteroidal anti-inflammatory drugs (NSAIDs) such as ibuprofen, Cilostazol, Clopidogrel, Dipyridamole, Ticlopidine. |
| Other things | Tell your doctor about any herbal remedies, vitamins, or supplements you are taking. Also, tell your doctor if you smoke or drink alcohol. |
This list may not include all medications, so it is important to give your doctor a complete description of all medications you are taking.
Things to be very careful about when taking medicine
You need to think especially about your safety when taking this medicine.
- Regular medical check-ups: Don't miss your doctor's appointments to monitor your condition. He or she may also order blood tests to check your blood levels.
- Protect yourself from injuries: This is the most important thing. This medicine thins your blood a bit, so even a small cut can cause a lot of bleeding. So stay away from sports and activities that can cause falls and injuries. Be very careful when using sharp tools like knives and scissors. If possible, use an electric razor to shave. Be careful not to scratch your gums when brushing and flossing.
- Informing other doctors: If you are having any other surgery or dental treatment, be sure to tell the doctor that you are taking Fondaparinux.
- Medical ID: It is very important for your safety to wear a medical ID bracelet or carry a card stating that you are taking this medication.
What side effects might I experience?
Like any medicine, this one can have some side effects. Some are serious, some are common. It's important to be aware of these.
| Type of side effect | Symptoms |
|---|---|
| Serious side effects that should be reported to the doctor immediately | |
| Allergic reactions | Skin rash, itching, swelling of the face, lips or tongue, difficulty breathing. |
| Bleeding symptoms | Black or bloody stools; red or dark brown urine; vomiting coffee grounds; red spots on the skin; unusual bleeding from the eyes, gums, or nose. |
| Symptoms of a new blood clot | Chest pain; difficulty breathing; leg pain, swelling, or a warm feeling. |
| Symptoms of Stroke | Vision changes; confusion; difficulty speaking or understanding; severe headache; sudden numbness or weakness in the face, arm, or leg; difficulty walking; dizziness. |
| It's usually not serious, but if it persists, tell your doctor. | |
| Changes at the injection site | Pain, redness, or slight swelling at the injection site. |
Take-Home Message
- Fondaparinux is a "blood thinner" injection given to prevent and treat blood clots.
- Before starting this medication, be sure to tell your doctor about all of your medical conditions and other medications you are taking.
- Follow your doctor's instructions carefully. Dispose of used needles safely.
- While taking this medicine, avoid activities that could cause injury. Be careful of even the slightest bruise or scrape.
- Seek immediate medical attention if you experience any serious side effects, such as signs of bleeding, signs of stroke, or allergic reactions.
- Do not stop using this medicine without your doctor's approval.
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