Fragmin is given as an injection just under the skin (subcutaneous injection). It is usually given once a day. You will typically receive this injection in a hospital or clinic, but in some cases, your doctor or nurse may teach you or a caregiver how to give the injection at home.
- Injection site: The injection is usually given into a skin fold in your abdomen (stomach area) or the outer part of your thigh. It is important to change the injection site each time to avoid bruising or irritation.
- Preparation: Fragmin usually comes in pre-filled syringes. You should not try to remove any air bubbles from the syringe, as a small air bubble is supposed to be there.
- Technique: Gently pinch a fold of skin, insert the entire needle at a 90-degree angle, and press the plunger slowly. Do not rub the injection site after removing the needle, as this can cause bruising.
- Disposal: Dispose of the used syringe immediately in a special sharps bin provided by your healthcare team.
Always follow your doctor’s or nurse’s specific instructions for administering Fragmin.
Fragmin works by affecting certain substances in your blood that are involved in the clotting process. It enhances the action of a natural protein in your body called antithrombin. Antithrombin helps to block specific clotting factors, especially Factor Xa and to a lesser extent, Factor IIa (thrombin). By inhibiting these factors, Fragmin prevents the formation of fibrin, which is a key protein needed to form a stable blood clot. This action helps to thin the blood, making it flow more smoothly through your blood vessels. This prevents new clots from forming and stops existing ones from getting bigger, allowing your body’s natural processes to break them down over time.
Like all medications, Fragmin can cause side effects. The most common side effect is related to bleeding.
- Bleeding: Because it’s a blood thinner, the main side effect is an increased risk of bleeding. This can range from easy bruising, nosebleeds, or bleeding gums to more serious internal bleeding.
- Injection site reactions: Pain, bruising, redness, or a small lump at the injection site are common.
- Low platelet count (thrombocytopenia): Although less common with Fragmin than with unfractionated heparin, a significant drop in platelet count can occur. Your doctor will monitor your blood counts.
- Allergic reactions: Rarely, severe allergic reactions like rash, hives, or difficulty breathing can occur.
Seek immediate medical attention if you experience signs of serious bleeding (e.g., unusual bruising, black or bloody stools, coughing up blood, severe headache, sudden weakness).
Before using Fragmin, your doctor will carefully review your medical history due to the risk of bleeding.
- Active bleeding: Fragmin should not be used if you have active major bleeding or conditions that significantly increase bleeding risk (e.g., severe uncontrolled high blood pressure, stomach ulcer, recent stroke, certain brain conditions).
- Spinal/epidural procedures: If you are receiving spinal anesthesia or a spinal tap, Fragmin should be used with extreme caution due to the risk of spinal hematoma (blood clot around the spine), which can cause paralysis. The timing of Fragmin doses around these procedures is critical.
- Allergies: Do not use if you have a history of severe allergy to dalteparin, heparin, or pork products.
- Low platelet count (heparin-induced thrombocytopenia): If you have a history of this condition with heparin, Fragmin is generally avoided.
- Kidney or liver problems: Use with caution, as these conditions can affect how Fragmin is cleared from your body, potentially increasing bleeding risk.
- Pregnancy and breastfeeding: Fragmin can be used during pregnancy if clearly needed, but risks will be assessed. It’s unknown if it passes into breast milk.
It is very important to tell your doctor about all other medicines you are taking, including over-the-counter drugs, vitamins, and herbal supplements, as Fragmin can interact with them. This is crucial because many interactions can increase your risk of bleeding.
- Oral anticoagulants (blood thinners like warfarin): Using Fragmin with these medicines greatly increases the risk of bleeding. Your doctor will carefully manage this combination.
- Platelet inhibitors (e.g., aspirin, clopidogrel): These drugs prevent blood platelets from sticking together. Combining them with Fragmin increases bleeding risk. Aspirin may be used with Fragmin for some heart conditions, but under strict medical guidance.
- NSAIDs (Nonsteroidal Anti-inflammatory Drugs like ibuprofen): These can also increase the risk of bleeding, especially in patients with kidney problems.
- Thrombolytic agents (clot-busting drugs): These medicines actively dissolve clots and significantly increase bleeding risk when combined with Fragmin.
Always provide a complete and accurate list of all your current medications to your healthcare provider.
The dosage of Fragmin is highly specific and depends on what it’s being used for (preventing or treating clots), your body weight, and sometimes your kidney function. Doses are measured in International Units (IU).
- For preventing clots (prophylaxis): Doses are typically lower (e.g., 2,500 IU or 5,000 IU) once a day, often started before or after surgery or for patients with severely restricted mobility.
- For treating existing clots (treatment): Doses are higher and usually weight-based (e.g., 200 IU/kg once daily or 100 IU/kg twice daily). For certain conditions like cancer-associated thrombosis, treatment can extend for several months with specific dose adjustments over time.
- Kidney impairment: In patients with severely reduced kidney function, your doctor may monitor blood levels (anti-Xa levels) to ensure the dose is safe and effective.
Always follow your doctor’s exact instructions for the dose and duration of Fragmin treatment.
Fragmin is a prescription-only medication. You cannot obtain it without a valid prescription from a licensed healthcare professional. This is due to several important factors:
- Serious indications: It is used for serious medical conditions like preventing or treating dangerous blood clots.
- Risk of bleeding: As a blood thinner, it carries a significant risk of bleeding complications, which requires careful medical oversight.
- Individualized dosing: The correct dose varies greatly depending on the patient’s condition, weight, and other medical factors, requiring a doctor’s expertise to determine.
- Monitoring: While regular blood tests for clotting time are less frequent than with unfractionated heparin, a doctor needs to monitor for signs of bleeding or other side effects.
- Administration: It is an injectable medication, often requiring professional guidance for proper administration.
Therefore, Fragmin is prescribed and managed under the strict supervision of a qualified healthcare professional, who will assess its appropriateness and monitor your safety.
What is Fragmin used for? Prevention and treatment of blood clots (DVT, PE); prevention of clotting in cancer patients; prevention of clotting during surgery or dialysis
2. What is the active ingredient? Dalteparin sodium
3. What drug class does it belong to? Low molecular weight heparin (LMWH) anticoagulant
4. Is Fragmin a controlled substance? No
5. Is Fragmin available in generic form? Yes
6. How is Fragmin administered? Subcutaneous injection (under the skin)
7. What strengths are available? 2500 IU, 5000 IU, 7500 IU, 10,000 IU, 12,500 IU, 15,000 IU prefilled syringes
8. What is the usual adult dosage? Depends on indication:
DVT/PE treatment: 200 IU/kg once daily
Cancer-associated thrombosis: 200 IU/kg daily for 1 month, then 150 IU/kg daily
9. Can it be used in children? Yes, but dosing is weight-based and requires specialist supervision
10. What are common side effects? Bruising at injection site, mild bleeding, pain, rash
11. Can it cause serious reactions? Yes—major bleeding, thrombocytopenia (HIT), spinal/epidural hematoma
12. Is Fragmin safe during pregnancy? Yes—often preferred anticoagulant in pregnancy
13. Is a prescription required? Yes
14. Is Fragmin available in Pakistan? Yes—used in hospitals and pharmacies
15. How should it be stored? At room temperature, away from light
16. What precautions should be taken during use? Avoid NSAIDs or aspirin unless prescribed; monitor for bleeding
17. What are contraindications? Active bleeding, history of heparin-induced thrombocytopenia, recent spinal/epidural procedures
18. What monitoring is needed during use? Platelet counts, signs of bleeding, renal function
19. Can Fragmin be used with warfarin? Yes—often used as bridging therapy until warfarin reaches therapeutic INR
20. What are similar drugs? Enoxaparin (Lovenox), tinzaparin, fondaparinux