Heparin Sod 5,000u/ml Inj, 10ml

Manufacturer FRESENIUS KABI Active Ingredient Heparin(HEP a rin) Pronunciation HEP-a-rin
It is used to thin the blood so that clots will not form.It is used to treat blood clots. It is used to keep blood from clotting in catheters. It may be given to you for other reasons. Talk with the doctor.
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Drug Class
Anticoagulant
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Pharmacologic Class
Antithrombin-dependent anticoagulant
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Pregnancy Category
C
FDA Approved
Jun 1939
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DEA Schedule
Not Controlled

Overview

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What is this medicine?

Heparin is a medicine that helps prevent blood clots from forming or growing larger in your body. It works by thinning your blood. It is given by injection, either into a vein (IV) or under the skin (subcutaneous).
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How to Use This Medicine

Taking Your Medication

To use this medication correctly, follow your doctor's instructions and read all the information provided. Your doctor may administer this medication through a catheter, as an injection into a vein or the fatty part of the skin, or as an infusion into a vein over a period of time. If you have any questions or concerns, be sure to discuss them with your doctor.

Storing and Disposing of Your Medication

If you need to store this medication at home, consult with your doctor, nurse, or pharmacist for guidance on proper storage.

Missing a Dose

If you miss a dose, contact your doctor to determine the best course of action.
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Lifestyle & Tips

  • Avoid activities that could cause injury or bleeding (e.g., contact sports, sharp objects).
  • Use a soft toothbrush and electric razor to minimize bleeding.
  • Inform all healthcare providers, including dentists, that you are taking heparin.
  • Report any signs of unusual bleeding or bruising immediately.
  • Do not take over-the-counter pain relievers like aspirin or NSAIDs (e.g., ibuprofen, naproxen) without consulting your doctor, as they can increase bleeding risk.

Dosing & Administration

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Adult Dosing

Standard Dose: Varies significantly by indication (e.g., DVT prophylaxis: 5,000 units subcutaneously every 8-12 hours; Treatment of VTE: Initial bolus 80 units/kg IV, then 18 units/kg/hour IV infusion, adjusted to target aPTT or anti-Xa level)
Dose Range: 5000 - 40000 mg

Condition-Specific Dosing:

DVT_Prophylaxis: 5,000 units subcutaneously every 8-12 hours
VTE_Treatment: Initial bolus 80 units/kg IV, then 18 units/kg/hour IV infusion, adjusted to target aPTT or anti-Xa level
ACS_NSTEMI: Initial bolus 60 units/kg (max 4000 units) IV, then 12 units/kg/hour (max 1000 units/hour) IV infusion, adjusted to target aPTT
PCI: Initial bolus 70-100 units/kg IV (if no GP IIb/IIIa inhibitor) or 50-70 units/kg IV (if GP IIb/IIIa inhibitor used)
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Pediatric Dosing

Neonatal: Initial bolus 75 units/kg IV over 10 minutes, then 28 units/kg/hour IV infusion (term neonates) or 20 units/kg/hour (preterm neonates), adjusted to target anti-Xa or aPTT
Infant: Initial bolus 75 units/kg IV over 10 minutes, then 28 units/kg/hour IV infusion, adjusted to target anti-Xa or aPTT
Child: Initial bolus 75 units/kg IV over 10 minutes, then 20 units/kg/hour IV infusion, adjusted to target anti-Xa or aPTT
Adolescent: Initial bolus 75 units/kg IV over 10 minutes, then 20 units/kg/hour IV infusion, adjusted to target anti-Xa or aPTT (or adult dosing if weight appropriate)
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Dose Adjustments

Renal Impairment:

Mild: No specific dose adjustment generally required, but monitor closely.
Moderate: No specific dose adjustment generally required, but monitor closely. Heparin clearance may be reduced.
Severe: Reduced clearance, increased risk of bleeding. Consider lower doses and closer monitoring of aPTT/anti-Xa. May require dose reduction.
Dialysis: Heparin is not significantly removed by hemodialysis. Use with caution, monitor closely. May be used for anticoagulation during dialysis.

Hepatic Impairment:

Mild: No specific dose adjustment generally required.
Moderate: No specific dose adjustment generally required, but monitor closely due to potential for impaired synthesis of clotting factors and increased bleeding risk.
Severe: Increased risk of bleeding due to impaired synthesis of clotting factors. Use with extreme caution, consider lower doses and close monitoring.

Pharmacology

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Mechanism of Action

Heparin binds to antithrombin (AT), a plasma protein that inactivates thrombin (Factor IIa) and Factor Xa. This binding causes a conformational change in AT, greatly accelerating its inhibitory action (by 1000-fold or more) on these coagulation factors. Heparin also inhibits other coagulation factors, including IXa, XIa, XIIa, and plasmin, through its interaction with AT. The primary anticoagulant effect is mediated by the inhibition of thrombin and Factor Xa.
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Pharmacokinetics

Absorption:

Bioavailability: Not applicable (IV/SC administration). Subcutaneous bioavailability is approximately 30% (variable).
Tmax: Not applicable (IV). Subcutaneous: 2-4 hours.
FoodEffect: Not applicable (parenteral administration).

Distribution:

Vd: 0.06 L/kg (similar to plasma volume)
ProteinBinding: High (to various plasma proteins, endothelial cells, macrophages), saturable binding, which contributes to non-linear kinetics.
CnssPenetration: Limited

Elimination:

HalfLife: Dose-dependent; typically 1-2 hours for therapeutic doses (e.g., 100 units/kg IV), but can range from 30 minutes to 3 hours. Longer with higher doses due to saturable binding.
Clearance: Non-linear, dose-dependent. Primarily renal for smaller fragments, but also via reticuloendothelial system.
ExcretionRoute: Renal (small amounts of unchanged drug and metabolites)
Unchanged: <50% (dose-dependent)
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Pharmacodynamics

OnsetOfAction: Immediate (IV); 20-60 minutes (SC)
PeakEffect: Minutes (IV); 2-4 hours (SC)
DurationOfAction: 2-6 hours (IV, dose-dependent); 8-12 hours (SC, dose-dependent)

Safety & Warnings

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BLACK BOX WARNING

Fatal Medication Errors: Heparin is a high-alert medication. Fatal medication errors have occurred due to confusion between different concentrations of heparin. Ensure the proper concentration is chosen. Do not use Heparin Lock Flush Solution (10 units/mL or 100 units/mL) for therapeutic anticoagulation. Heparin Sodium Injection is not intended for intramuscular use.
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Side Effects

Urgent Side Effects: Seek Medical Help Right Away

Although rare, some people may experience severe and potentially life-threatening side effects while taking this medication. If you notice any of the following symptoms, contact your doctor or seek immediate medical attention:

Signs of an allergic reaction, such as:
+ Rash
+ Hives
+ Itching
+ Red, swollen, blistered, or peeling skin with or without fever
+ Wheezing
+ Tightness in the chest or throat
+ Trouble breathing, swallowing, or talking
+ Unusual hoarseness
+ Swelling of the mouth, face, lips, tongue, or throat
Signs of bleeding, including:
+ Vomiting or coughing up blood
+ Vomit that resembles coffee grounds
+ Blood in the urine
+ Black, red, or tarry stools
+ Bleeding from the gums
+ Abnormal vaginal bleeding
+ Unexplained bruises or bruises that enlarge
+ Uncontrollable bleeding
Neurological symptoms, such as:
+ Weakness on one side of the body
+ Difficulty speaking or thinking
+ Changes in balance
+ Drooping on one side of the face
+ Blurred vision
Feeling confused
Severe headache
Dizziness or fainting
Upset stomach or vomiting
Unusual burning sensations, particularly on the soles of the feet
Swelling, warmth, numbness, color changes, or pain in a leg or arm
Chest pain or pressure
Shortness of breath
Back pain
Groin or pelvic pain or swelling
Changes in skin color at the injection site
Skin breakdown at the site of administration
Fever or chills

Other Possible Side Effects

Like all medications, this drug can cause side effects. However, many people experience no side effects or only mild ones. If you encounter any side effects that bother you or persist, consult your doctor for guidance.

Please note that this list is not exhaustive, and you may experience other side effects not mentioned here. If you have questions or concerns about side effects, contact your doctor. You can also report side effects to the FDA at 1-800-332-1088 or online at https://www.fda.gov/medwatch.
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Seek Immediate Medical Attention If You Experience:

  • Any unusual bleeding (e.g., nosebleeds, bleeding gums, blood in urine or stools, heavy menstrual bleeding)
  • Excessive bruising or purple spots on the skin
  • Severe headache, dizziness, or weakness
  • Sudden, severe pain or swelling in a limb
  • Chest pain or shortness of breath
  • Signs of allergic reaction (rash, itching, swelling, difficulty breathing)
  • Sudden decrease in platelet count (may be asymptomatic initially, but can lead to new clots)
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Before Using This Medicine

Before Taking This Medication: Important Information to Share with Your Doctor

It is essential to inform your doctor about the following:

Any allergies you have, including allergies to this medication, its components, or other substances, such as foods or drugs. Be sure to describe the symptoms you experienced as a result of the allergy.
If you are allergic to pork products, discuss this with your doctor.
* Certain health conditions, including:
+ Bleeding problems
+ Low platelet count
+ A history of low platelet count caused by heparin or pentosan polysulfate

This list is not exhaustive, and it is crucial to disclose all your medications (prescription, over-the-counter, natural products, and vitamins) and health issues to your doctor and pharmacist. They will help determine whether it is safe to take this medication in conjunction with your other medications and health conditions. Never start, stop, or adjust the dosage of any medication without first consulting your doctor.
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Precautions & Cautions

It is essential to inform all your healthcare providers, including doctors, nurses, pharmacists, and dentists, that you are taking this medication.

While on this medication, you may experience easier bleeding. To minimize the risk of injury, be cautious and take preventive measures such as using a soft toothbrush and an electric razor.

This medication can cause severe and potentially life-threatening bleeding problems. Additionally, it may lead to a condition known as heparin-induced thrombocytopenia (HIT), which can cause blood clots, also referred to as heparin-induced thrombocytopenia and thrombosis (HITTS). Both HIT and HITTS can be fatal or result in other complications, and may occur up to several weeks after stopping the medication. If you have any questions or concerns, discuss them with your doctor. It is crucial to undergo blood tests as directed by your doctor and to consult with them regularly.

This medication may interfere with certain laboratory tests. Therefore, it is vital to inform all your healthcare providers and laboratory personnel that you are taking this medication.

If you fall, injure yourself, or hit your head, contact your doctor immediately, even if you feel fine.

Ensure that you have the correct product, as this medication is available in various containers and strengths. If you are unsure, consult your doctor or pharmacist.

If you are allergic to sulfites, inform your doctor, as some products contain sulfites.

Individuals over 60 years old should exercise caution when using this medication, as they may be more susceptible to side effects.

Some products contain benzyl alcohol, which can cause serious side effects in newborns and infants, particularly when combined with other medications containing benzyl alcohol. If you are a parent or caregiver, consult your doctor to determine if the product contains benzyl alcohol and to discuss alternative options.

If you are pregnant, plan to become pregnant, or are breastfeeding, inform your doctor to discuss the potential benefits and risks to you and your baby.
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Overdose Information

Overdose Symptoms:

  • Excessive bleeding (e.g., hematuria, melena, epistaxis, ecchymoses, petechiae, hematomas)
  • Hypotension
  • Tachycardia
  • Shock

What to Do:

Seek immediate medical attention. The antidote for heparin overdose is protamine sulfate. Call 911 or your local emergency number. For non-emergencies, call Poison Control at 1-800-222-1222.

Drug Interactions

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Major Interactions

  • Other anticoagulants (e.g., warfarin, dabigatran, rivaroxaban, apixaban, edoxaban): Increased risk of bleeding.
  • Antiplatelet agents (e.g., aspirin, clopidogrel, ticagrelor, prasugrel, NSAIDs): Increased risk of bleeding.
  • Thrombolytic agents (e.g., alteplase, tenecteplase): Increased risk of bleeding.
  • Nitroglycerin (IV): May decrease heparin's anticoagulant effect (monitor aPTT/anti-Xa).
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Moderate Interactions

  • Cephalosporins (certain, e.g., cefoperazone, cefotetan): May increase bleeding risk due to hypoprothrombinemia.
  • Probenecid: May increase heparin levels.
  • Digoxin: May decrease digoxin levels.
  • Tetracyclines: May decrease heparin's anticoagulant effect.
  • Antihistamines: May decrease heparin's anticoagulant effect.

Monitoring

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Baseline Monitoring

Complete Blood Count (CBC) with platelets

Rationale: To establish baseline hemoglobin, hematocrit, and platelet count before initiating therapy and to monitor for bleeding and heparin-induced thrombocytopenia (HIT).

Timing: Prior to initiation

Activated Partial Thromboplastin Time (aPTT)

Rationale: To establish baseline coagulation status, though not typically used for baseline therapeutic target.

Timing: Prior to initiation (if not recent)

Renal function (BUN, creatinine)

Rationale: To assess kidney function, as heparin clearance can be affected by severe renal impairment.

Timing: Prior to initiation

Liver function tests (LFTs)

Rationale: To assess liver function, as severe hepatic impairment can increase bleeding risk.

Timing: Prior to initiation

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Routine Monitoring

Activated Partial Thromboplastin Time (aPTT)

Frequency: Every 6 hours after initiation or dose change until therapeutic range is achieved, then at least daily for continuous IV infusion. Less frequent for SC prophylaxis.

Target: Typically 1.5-2.5 times the control value (specific target range should be established by the laboratory and clinical protocol, often correlating to an anti-Xa level of 0.3-0.7 units/mL).

Action Threshold: Below target: Increase dose; Above target: Decrease dose or hold.

Anti-Factor Xa (anti-Xa) level

Frequency: May be used instead of or in conjunction with aPTT, especially in patients with lupus anticoagulant or other conditions affecting aPTT. Frequency similar to aPTT.

Target: 0.3-0.7 units/mL for therapeutic anticoagulation; 0.1-0.3 units/mL for prophylaxis.

Action Threshold: Below target: Increase dose; Above target: Decrease dose or hold.

Platelet count

Frequency: Every 2-3 days from day 4 to day 14 of therapy, or until heparin is discontinued, due to risk of Heparin-Induced Thrombocytopenia (HIT).

Target: Maintain >100,000/mm³ or >50% of baseline.

Action Threshold: Drop of >50% from baseline or absolute count <100,000/mm³: Suspect HIT, discontinue heparin, and consider alternative anticoagulant.

Hemoglobin and Hematocrit

Frequency: Daily or as clinically indicated.

Target: Maintain stable levels.

Action Threshold: Significant drop: Investigate for bleeding.

Signs and symptoms of bleeding

Frequency: Continuously

Target: Absence of bleeding

Action Threshold: Any signs of bleeding (e.g., hematuria, melena, epistaxis, bruising, petechiae, gum bleeding, significant drop in BP/HR): Hold heparin, assess, consider protamine sulfate.

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Symptom Monitoring

  • Unusual bleeding or bruising (e.g., nosebleeds, gum bleeding, blood in urine/stools, excessive bruising)
  • Signs of internal bleeding (e.g., severe headache, dizziness, weakness, abdominal pain, black/tarry stools, red/pink urine)
  • Signs of allergic reaction (e.g., rash, hives, itching, swelling, difficulty breathing)
  • Signs of Heparin-Induced Thrombocytopenia (HIT) (e.g., new or worsening thrombosis, skin lesions at injection site, sudden drop in platelet count)

Special Patient Groups

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Pregnancy

Heparin does not cross the placenta and is generally considered the anticoagulant of choice for pregnant women requiring anticoagulation. However, it is classified as Pregnancy Category C due to potential for maternal complications (e.g., osteoporosis, thrombocytopenia) and rare reports of fetal adverse events (e.g., stillbirth, prematurity) that are not directly attributable to a teratogenic effect.

Trimester-Specific Risks:

First Trimester: Low risk of teratogenicity. Maternal bleeding risk.
Second Trimester: Maternal bleeding risk, potential for heparin-induced osteoporosis with prolonged use.
Third Trimester: Maternal bleeding risk, especially around delivery. Consider discontinuation before labor or use of regional anesthesia.
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Lactation

Heparin is considered safe during breastfeeding. It is a large molecule and is not excreted into breast milk in clinically significant amounts. It is also poorly absorbed orally by the infant.

Infant Risk: L1 (Safest)
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Pediatric Use

Heparin can be used safely in pediatric patients, including neonates, infants, children, and adolescents. Dosing is weight-based and requires careful titration and monitoring of aPTT or anti-Xa levels due to differences in pharmacokinetics and antithrombin levels compared to adults. Neonates and infants may have lower antithrombin levels, potentially requiring higher doses or antithrombin supplementation.

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Geriatric Use

Geriatric patients may be more sensitive to the effects of heparin and have an increased risk of bleeding. Lower doses may be required, and close monitoring of aPTT/anti-Xa and for signs of bleeding is essential. Renal function should be assessed, as impaired renal function can affect heparin clearance.

Clinical Information

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Clinical Pearls

  • Heparin is a high-alert medication; always double-check concentration and dose to prevent fatal medication errors.
  • The antidote for heparin is protamine sulfate. 1 mg of protamine sulfate neutralizes approximately 100 units of heparin.
  • Heparin-induced thrombocytopenia (HIT) is a serious, immune-mediated complication. Monitor platelet counts regularly (every 2-3 days from day 4 to 14 of therapy). If HIT is suspected, discontinue heparin immediately and initiate an alternative non-heparin anticoagulant.
  • Heparin's anticoagulant effect is highly variable among individuals due to binding to plasma proteins and endothelial cells; therefore, dosing requires careful titration based on laboratory monitoring (aPTT or anti-Xa).
  • Subcutaneous heparin for prophylaxis should be administered in the abdominal fat, rotating injection sites to prevent hematoma formation.
  • Do not administer heparin intramuscularly due to the high risk of hematoma formation.
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Alternative Therapies

  • Low Molecular Weight Heparins (LMWHs) (e.g., enoxaparin, dalteparin): Preferred for many indications due to more predictable pharmacokinetics, less need for monitoring, and lower risk of HIT.
  • Direct Oral Anticoagulants (DOACs) (e.g., dabigatran, rivaroxaban, apixaban, edoxaban): Used for VTE treatment/prevention, stroke prevention in AFib.
  • Warfarin (Vitamin K antagonist): Oral anticoagulant for long-term anticoagulation.
  • Direct Thrombin Inhibitors (DTIs) (e.g., argatroban, bivalirudin, dabigatran): Used in patients with HIT or for specific indications like PCI.
  • Factor Xa Inhibitors (e.g., fondaparinux, rivaroxaban, apixaban, edoxaban): Used for VTE treatment/prevention.
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Cost & Coverage

Average Cost: Varies widely by concentration, volume, and supplier per vial/mL
Generic Available: Yes
Insurance Coverage: Tier 1 or 2 (Generic)
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General Drug Facts

If your symptoms or health problems do not improve or worsen over time, it is essential to contact your doctor for further evaluation and guidance.

To ensure safe use, do not share your prescription medications with others, and never take someone else's medications. Store all medications in a secure location, out of reach of children and pets, to prevent accidental ingestion.

Proper disposal of unused or expired medications is crucial. Do not flush medications down the toilet or pour them down the drain unless specifically instructed to do so by a healthcare professional or pharmacist. If you are unsure about the correct disposal method, consult with your pharmacist, who can provide guidance on safe disposal practices or inform you about potential drug take-back programs in your area.

Some medications may come with an additional patient information leaflet, so it is a good idea to check with your pharmacist for more information. If you have any questions or concerns about your medication, do not hesitate to discuss them with your doctor, nurse, pharmacist, or other healthcare provider.

In the event of a suspected overdose, immediately call your local poison control center or seek emergency medical attention. Be prepared to provide critical information, including the name of the medication taken, the amount, and the time it was taken, to ensure prompt and effective treatment.