Orbactiv 400mg Sol For Inj, 3 Vials

Manufacturer MELINTA Active Ingredient Oritavancin(or it a VAN sin) Pronunciation OR-it-a-VAN-sin
It is used to treat skin infections.
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Drug Class
Antibiotic
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Pharmacologic Class
Lipoglycopeptide antibiotic
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Pregnancy Category
Category C
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FDA Approved
Aug 2014
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DEA Schedule
Not Controlled

Overview

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What is this medicine?

Oritavancin is a powerful antibiotic given as a single intravenous (IV) infusion to treat serious skin infections caused by certain types of bacteria. Because it stays in your body for a long time, only one dose is usually needed.
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How to Use This Medicine

To use this medication correctly, follow your doctor's instructions and read all accompanying information carefully. This drug is administered as an intravenous infusion, which means it is given slowly into a vein over a period of time.

For proper storage and disposal, consult with your doctor, nurse, or pharmacist if you need to keep this medication at home, as they can provide guidance on how to handle it.

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

  • Complete the full infusion as prescribed, even if you start feeling better.
  • Report any signs of allergic reaction (rash, itching, swelling, difficulty breathing) immediately during or after the infusion.
  • Report any new or worsening diarrhea, especially if severe or bloody, as this could be a sign of a new infection (C. difficile).
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Available Forms & Alternatives

Dosing & Administration

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Adult Dosing

Standard Dose: 1200 mg as a single intravenous infusion
Dose Range: 1200 - 1200 mg

Condition-Specific Dosing:

acuteBacterialSkinAndSkinStructureInfections: 1200 mg as a single intravenous infusion, administered over 3 hours
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Pediatric Dosing

Neonatal: Not established
Infant: Not established
Child: Not established
Adolescent: Not established
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Dose Adjustments

Renal Impairment:

Mild: No dosage adjustment necessary
Moderate: No dosage adjustment necessary
Severe: No dosage adjustment necessary
Dialysis: No dosage adjustment necessary; Oritavancin is not removed by hemodialysis.

Hepatic Impairment:

Mild: No dosage adjustment necessary
Moderate: No dosage adjustment necessary
Severe: No dosage adjustment necessary (based on limited data, caution advised)

Pharmacology

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Mechanism of Action

Oritavancin is a lipoglycopeptide antibiotic with bactericidal activity against Gram-positive bacteria. It inhibits bacterial cell wall synthesis by binding to the D-Ala-D-Ala terminus of peptidoglycan precursors, thereby inhibiting transglycosylation (polymerization) and transpeptidation (cross-linking). Additionally, it disrupts bacterial membrane integrity, leading to depolarization, increased permeability, and cell death.
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Pharmacokinetics

Absorption:

Bioavailability: 100% (intravenous administration)
Tmax: End of infusion
FoodEffect: Not applicable (IV administration)

Distribution:

Vd: 87.6 L (steady-state)
ProteinBinding: Approximately 85% (primarily to human serum albumin)
CnssPenetration: Limited

Elimination:

HalfLife: Approximately 245 hours (10.2 days)
Clearance: 0.44 L/hr
ExcretionRoute: Primarily fecal (approximately 80%), with minor renal excretion (approximately 5%)
Unchanged: Not available (minimal metabolism)
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Pharmacodynamics

OnsetOfAction: Rapid (following infusion)
PeakEffect: End of infusion
DurationOfAction: Prolonged due to long half-life, allowing for single-dose therapy.

Safety & Warnings

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Side Effects

Serious Side Effects: Seek Medical Help Immediately

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 medical attention right away:

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
Infusion-related reactions, such as:
+ Flushing
+ Rash on the face, neck, trunk, or arms
+ Back pain
+ Chest pain
+ Chills
+ Shakiness
Diarrhea, especially if it is severe, bloody, or accompanied by stomach pain or cramps. This could be a sign of a rare but potentially deadly condition called C. diff-associated diarrhea (CDAD), which may occur during or after antibiotic treatment.

Other Possible Side Effects

Like all medications, this drug can cause side effects. While many people may not experience any side effects or only minor ones, it is essential to discuss any concerns with your doctor. If you experience any of the following side effects, or if they bother you or do not go away, contact your doctor:

Headache
Irritation at the injection site
Diarrhea
Upset stomach
Vomiting

This is not an exhaustive list of possible side effects. If you have questions or concerns about side effects, consult your doctor. You can also report side effects to the FDA at 1-800-332-1088 or online at https://www.fda.gov/medwatch. Your doctor can provide medical advice on managing side effects.
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Seek Immediate Medical Attention If You Experience:

  • Severe allergic reactions (anaphylaxis, Red Man Syndrome-like reactions)
  • Infusion-related reactions (flushing, urticaria, pruritus, rash, hypotension)
  • Clostridium difficile-associated diarrhea (CDAD)
  • Superinfections (e.g., fungal infections)
  • Osteomyelitis (bone infection) - Oritavancin is not indicated for this, and patients should be evaluated for underlying osteomyelitis if ABSSSI is suspected.
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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.
All medications you are currently taking, including prescription and over-the-counter (OTC) drugs, natural products, and vitamins. This is crucial to avoid potential interactions between this medication and other substances.
* Any existing health problems, as this medication may interact with certain conditions.

To ensure your safety, it is vital to verify that this medication is compatible with all your medications and health conditions. Never start, stop, or adjust the dosage of any medication without first consulting your doctor. By sharing this information, you can help your doctor make informed decisions about your treatment and minimize potential risks.
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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. Adhere to the prescribed duration of treatment, as prolonged use may increase the risk of a second infection.

After completing treatment with this drug, do not receive heparin intravenously for at least 120 hours (5 days), as this may interfere with the effectiveness of heparin. Additionally, this medication may impact the accuracy of certain laboratory tests used to monitor heparin's efficacy. Be sure to discuss this with your doctor.

Clinical studies have reported cases of severe bone infections in patients treated with this medication. If you experience any bone pain, promptly notify your doctor.

This drug may also affect the results of other laboratory tests. Therefore, it is crucial to inform all your healthcare providers and laboratory personnel that you are taking this medication.

If you are pregnant, planning to become pregnant, or are breastfeeding, consult your doctor to discuss the potential benefits and risks of this medication to both you and your baby.
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Overdose Information

Overdose Symptoms:

  • Limited data on overdose. Potential symptoms may include exaggerated adverse effects such as infusion-related reactions or gastrointestinal disturbances.

What to Do:

There is no specific antidote for Oritavancin overdose. Treatment should be symptomatic and supportive. Oritavancin is not removed by hemodialysis. Contact a poison control center (e.g., 1-800-222-1222) for specific guidance.

Drug Interactions

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Moderate Interactions

  • Warfarin (Oritavancin can falsely prolong aPTT, PT, and INR for up to 24 hours, and ACT for up to 12 hours. If co-administration is necessary, consider alternative coagulation tests not affected by Oritavancin, such as Factor Xa activity assays, or collect blood samples for coagulation testing prior to Oritavancin infusion.)
  • Heparin (Oritavancin can falsely prolong aPTT and ACT. Avoid concomitant use of unfractionated heparin for 5 days after Oritavancin administration due to interference with aPTT monitoring. If heparin is required, consider alternative anticoagulants or alternative coagulation tests.)

Monitoring

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Baseline Monitoring

Culture and Susceptibility Testing

Rationale: To confirm the causative pathogen and its susceptibility to Oritavancin.

Timing: Prior to initiation of therapy

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Routine Monitoring

Signs and Symptoms of Hypersensitivity Reactions

Frequency: During and after infusion

Target: Absence of rash, pruritus, urticaria, flushing, angioedema, dyspnea, hypotension.

Action Threshold: Discontinue infusion immediately if signs occur and initiate appropriate medical management.

Signs and Symptoms of Superinfection (e.g., C. difficile-associated diarrhea)

Frequency: Throughout therapy and for several weeks post-therapy

Target: Absence of new or worsening diarrhea, abdominal pain, fever.

Action Threshold: Evaluate for C. difficile infection if severe diarrhea occurs.

Coagulation Tests (aPTT, PT/INR, ACT)

Frequency: As clinically indicated, if other anticoagulants are used

Target: Not applicable (Oritavancin interferes with these tests)

Action Threshold: Be aware of false prolongation; use alternative tests or collect samples prior to Oritavancin if accurate coagulation monitoring is critical within 5 days post-infusion.

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Symptom Monitoring

  • Rash
  • Hives
  • Itching
  • Swelling of face/lips/tongue/throat
  • Difficulty breathing
  • Dizziness
  • Fainting
  • Flushing
  • Severe diarrhea
  • Abdominal pain
  • Fever
  • New or worsening signs of infection

Special Patient Groups

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Pregnancy

Category C. There are no adequate and well-controlled studies of Oritavancin in pregnant women. Use during pregnancy only if the potential benefit justifies the potential risk to the fetus.

Trimester-Specific Risks:

First Trimester: Risk cannot be ruled out. Animal studies showed developmental toxicity (skeletal variations) at doses higher than human exposure.
Second Trimester: Risk cannot be ruled out.
Third Trimester: Risk cannot be ruled out.
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Lactation

It is not known whether Oritavancin is excreted in human milk. Due to the potential for serious adverse reactions in breastfed infants, a decision should be made whether to discontinue nursing or to discontinue the drug, taking into account the importance of the drug to the mother.

Infant Risk: Not available (potential for serious adverse reactions)
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Pediatric Use

Safety and effectiveness in pediatric patients (under 18 years of age) have not been established.

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Geriatric Use

No overall differences in safety or effectiveness were observed between elderly subjects (65 years and older) and younger subjects. No dosage adjustment is necessary based on age.

Clinical Information

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Clinical Pearls

  • Oritavancin is a single-dose IV antibiotic, which can be advantageous for patient adherence and outpatient treatment of ABSSSI.
  • It has a very long half-life (approx. 10 days), meaning its effects persist for an extended period after a single dose.
  • Be aware of the interference with common coagulation tests (aPTT, PT/INR, ACT) for up to 5 days post-infusion. This is an assay interference, not an actual effect on coagulation. If coagulation monitoring is critical, use alternative tests (e.g., Factor Xa activity) or collect samples before Oritavancin administration.
  • Ensure proper infusion rate (over 3 hours) to minimize infusion-related reactions.
  • Confirm the infection is caused by susceptible Gram-positive organisms before administration.
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Alternative Therapies

  • Dalbavancin (another single-dose lipoglycopeptide)
  • Telavancin (lipoglycopeptide)
  • Vancomycin (glycopeptide)
  • Linezolid (oxazolidinone)
  • Daptomycin (lipopeptide)
  • Ceftaroline (cephalosporin)
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Cost & Coverage

Average Cost: Varies widely, typically several thousand USD per 1200 mg single dose
Insurance Coverage: Specialty Tier or Tier 4/5 (requires prior authorization)
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General Drug Facts

If your symptoms or health problems persist or worsen, it is essential to contact your doctor promptly. To ensure safe use, never share your medication with others or take someone else's medication. Store all medications in a secure location, out of the reach of children and pets, to prevent accidental ingestion. Dispose of unused or expired medications properly. Unless instructed to do so by a healthcare professional, do not flush medications down the toilet or pour them down the drain. If you are unsure about the proper disposal method, consult your pharmacist, who can also inform you about potential drug take-back programs in your area. Some medications may have additional patient information leaflets, which your pharmacist can provide. If you have any questions or concerns about your medication, discuss them with your doctor, nurse, pharmacist, or other healthcare provider. In the event of a suspected overdose, immediately contact your local poison control center or seek emergency medical attention. Be prepared to provide information about the medication taken, the quantity, and the time of ingestion.