Tigecycline 50mg Inj, 1 Vial

Manufacturer APOTEX Active Ingredient Tigecycline(tye ge SYE kleen) Pronunciation tye ge SYE kleen
WARNING: A larger number of deaths happened in people taking this drug compared to people taking other drugs used to treat infections. The cause of this is not known. This drug is only for use when other drugs cannot be used.Some products have maltose in them, which may affect certain glucose tests. False results of glucose tests may cause problems when treating high or low blood sugar. This may lead to long-lasting effects or death. Talk with the doctor about which blood sugar tests are best to use. @ COMMON USES: It is used to treat bacterial infections.
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Drug Class
Antibiotic
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Pharmacologic Class
Glycylcycline
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Pregnancy Category
Category D
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FDA Approved
Jun 2005
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DEA Schedule
Not Controlled

Overview

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What is this medicine?

Tigecycline is an antibiotic given by injection into a vein (intravenously) to treat serious bacterial infections of the skin, abdomen, and lungs. It works by stopping the growth of bacteria. It is often used when other antibiotics are not effective or suitable.
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How to Use This Medicine

To use this medication correctly, follow your doctor's instructions and carefully read all accompanying information. Take this medication exactly as directed, and adhere to all guidelines provided. This drug is administered via infusion into a vein over a specified period of time.

If you need to store this medication at home, consult with your doctor, nurse, or pharmacist to determine the proper storage procedure.

In the event that you miss a dose, contact your doctor promptly to receive guidance on the appropriate course of action.
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Lifestyle & Tips

  • Avoid excessive sun exposure and use sunscreen, as tigecycline can cause photosensitivity.
  • Report any new or worsening symptoms, especially severe abdominal pain, persistent diarrhea, or signs of allergic reaction.
  • Do not take other medications without consulting your doctor or pharmacist, especially blood thinners like warfarin or birth control pills.
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Available Forms & Alternatives

Dosing & Administration

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Adult Dosing

Standard Dose: 100 mg IV as a single loading dose, followed by 50 mg IV every 12 hours. Infuse over 30-60 minutes.
Dose Range: 50 - 100 mg

Condition-Specific Dosing:

complicated skin and skin structure infections (cSSSI): 100 mg IV loading dose, then 50 mg IV every 12 hours for 5 to 14 days.
complicated intra-abdominal infections (cIAI): 100 mg IV loading dose, then 50 mg IV every 12 hours for 5 to 14 days.
community-acquired bacterial pneumonia (CABP): 100 mg IV loading dose, then 50 mg IV every 12 hours for 7 to 14 days.
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Pediatric Dosing

Neonatal: Not established (contraindicated in children <8 years due to tooth discoloration and bone growth inhibition).
Infant: Not established (contraindicated in children <8 years due to tooth discoloration and bone growth inhibition).
Child: Not established (contraindicated in children <8 years due to tooth discoloration and bone growth inhibition). Use in adolescents (12 to <18 years) is not recommended unless other agents are not suitable.
Adolescent: Not established (generally not recommended due to potential for permanent tooth discoloration and bone growth inhibition).
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Dose Adjustments

Renal Impairment:

Mild: No dose adjustment needed.
Moderate: No dose adjustment needed.
Severe: No dose adjustment needed.
Dialysis: No dose adjustment needed for patients on hemodialysis or peritoneal dialysis. Administer after dialysis sessions.

Hepatic Impairment:

Mild: No dose adjustment needed (Child-Pugh A).
Moderate: No dose adjustment needed (Child-Pugh B).
Severe: Initial dose of 100 mg IV, followed by 25 mg IV every 12 hours (Child-Pugh C). Monitor closely for adverse effects.
Confidence: High

Pharmacology

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Mechanism of Action

Tigecycline is a glycylcycline antibiotic that inhibits protein translation in bacteria by binding to the 30S ribosomal subunit. This binding prevents the entry of aminoacyl-tRNA molecules into the A site of the ribosome, thereby interfering with peptide chain elongation and inhibiting bacterial protein synthesis. It is generally considered bacteriostatic.
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Pharmacokinetics

Absorption:

Bioavailability: 100% (intravenous administration)
Tmax: Not applicable (IV administration, peak concentration achieved at end of infusion)
FoodEffect: Not applicable (IV administration)

Distribution:

Vd: 500-700 L (extensive tissue distribution)
ProteinBinding: 71-89%
CnssPenetration: Limited

Elimination:

HalfLife: 27-42 hours (terminal half-life)
Clearance: Approximately 24 L/hr
ExcretionRoute: Primarily biliary/fecal (59%), with a significant portion excreted renally (33%) as unchanged drug.
Unchanged: Approximately 33% (renal), 22% (fecal)
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Pharmacodynamics

OnsetOfAction: Rapid (achieves therapeutic concentrations quickly after infusion)
PeakEffect: At end of infusion
DurationOfAction: Sustained due to long half-life and extensive tissue distribution, allowing for every 12-hour dosing.

Safety & Warnings

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BLACK BOX WARNING

All-Cause Mortality: An increase in all-cause mortality has been observed in tigecycline-treated patients compared to comparator-treated patients in clinical trials. Tigecycline should be reserved for use in situations where other alternative treatments are not suitable.
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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 medical attention immediately:

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 liver problems, including:
+ Dark urine
+ Tiredness
+ Decreased appetite
+ Upset stomach or stomach pain
+ Light-colored stools
+ Vomiting
+ Yellow skin or eyes
Signs of too much acid in the blood (acidosis), such as:
+ Confusion
+ Fast breathing
+ Fast heartbeat
+ Irregular heartbeat
+ Severe stomach pain, upset stomach, or vomiting
+ Feeling extremely sleepy
+ Shortness of breath
+ Feeling very tired or weak
Other severe symptoms, including:
+ Inability to urinate or changes in urine output
+ Severe diarrhea, stomach cramps, or bloody stools (may be a sign of C. diff-associated diarrhea, a potentially life-threatening condition)
+ Severe stomach pain, back pain, or vomiting (may be a sign of pancreatitis)
+ Headache or vision problems, such as blurred vision, double vision, or loss of vision (may be a sign of raised pressure in the brain)

Common Side Effects

Most people experience mild or no side effects while taking this medication. However, some common side effects may occur, including:

Diarrhea
Stomach pain
Upset stomach
Vomiting
* Headache

If any of these side effects or other symptoms bother you or do not go away, contact your doctor for advice.

Reporting Side Effects

If you experience any side effects, you can report them to the FDA at 1-800-332-1088 or online at https://www.fda.gov/medwatch. You can also contact your doctor for guidance on managing side effects.
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Seek Immediate Medical Attention If You Experience:

  • Severe abdominal pain (especially if radiating to the back), nausea, or vomiting (signs of pancreatitis)
  • Severe, persistent diarrhea, especially if bloody or watery, with abdominal cramps and fever (signs of C. difficile-associated diarrhea)
  • Yellowing of the skin or eyes, dark urine, or unusual tiredness (signs of liver problems)
  • Rash, hives, itching, swelling of the face/lips/tongue/throat, severe dizziness, or trouble breathing (signs of allergic reaction)
  • New or worsening signs of infection (e.g., fever, chills, sore throat) which could indicate a superinfection.
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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 allergic reaction and its symptoms.
If you have a gastrointestinal (GI) tract perforation (a hole in the GI tract).

This list is not exhaustive, and it is crucial to discuss all your medications (prescription, over-the-counter, natural products, and vitamins) and health conditions with your doctor and pharmacist. They will help determine if it is safe to take this medication with your other medications and health conditions.

Remember, do not start, stop, or change the dosage of any medication without first consulting your doctor.
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Precautions & Cautions

Important Information for Patients Taking This Medication

It is essential to inform all your healthcare providers, including doctors, nurses, pharmacists, and dentists, that you are taking this medication. Regular blood work and laboratory tests should be performed as directed by your doctor to monitor your condition.

Duration of Use and Risk of Infection

Do not take this medication for longer than prescribed by your doctor. Prolonged use may increase the risk of developing a second infection.

Sun Sensitivity

This medication may increase your susceptibility to sunburn. Exercise caution when exposed to sunlight, and notify your doctor if you experience excessive sunburn or sensitivity.

Dental and Skeletal Effects

In children under 8 years old, or in unborn babies exposed to this medication during certain stages of pregnancy, tooth discoloration (yellow-gray brown) may occur. This change is permanent. Additionally, other tooth problems and effects on bone growth have been reported in these individuals. If you have concerns, consult your doctor.

Contraception and Pregnancy

The effectiveness of birth control pills and other hormone-based contraceptives may be reduced when taking this medication. To prevent pregnancy, use an alternative method, such as condoms, in conjunction with your regular birth control.

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

Use in Children

This medication is not approved for use in children. However, your doctor may determine that the benefits of taking this medication outweigh the risks. If your child has been prescribed this medication, ask your doctor about the potential benefits and risks, and discuss any concerns you may have.
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Overdose Information

Overdose Symptoms:

  • Nausea
  • Vomiting
  • Diarrhea
  • Increased liver enzymes

What to Do:

There is no specific antidote for tigecycline overdose. Treatment should be symptomatic and supportive. Tigecycline is not significantly removed by hemodialysis. Call 1-800-222-1222 (Poison Control Center) immediately for advice.

Drug Interactions

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Major Interactions

  • Warfarin (increased INR/bleeding risk)
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Moderate Interactions

  • Oral contraceptives (potential for decreased efficacy)
  • Other bacteriostatic agents (e.g., chloramphenicol, macrolides, sulfonamides - theoretical antagonism with bactericidal agents, though clinical significance is often debated)

Monitoring

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Baseline Monitoring

Culture and Susceptibility

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

Timing: Prior to initiation of therapy.

Liver Function Tests (LFTs)

Rationale: To assess baseline hepatic function, especially important given the drug's metabolism and excretion, and the risk of hepatotoxicity.

Timing: Prior to initiation of therapy.

Renal Function (BUN, Creatinine)

Rationale: To assess baseline renal function, although no dose adjustment is typically needed for renal impairment.

Timing: Prior to initiation of therapy.

Complete Blood Count (CBC)

Rationale: To assess baseline hematologic status, as myelosuppression has been reported.

Timing: Prior to initiation of therapy.

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Routine Monitoring

Clinical Response (signs/symptoms of infection)

Frequency: Daily

Target: Resolution of infection

Action Threshold: Lack of improvement or worsening symptoms may indicate treatment failure or superinfection.

Liver Function Tests (LFTs)

Frequency: Periodically, especially with prolonged therapy or in patients with pre-existing hepatic impairment.

Target: Within normal limits or stable

Action Threshold: Significant elevations (e.g., >3x ULN) may warrant dose adjustment or discontinuation.

INR (if on warfarin)

Frequency: Frequently (e.g., daily to every few days) upon initiation and during co-administration.

Target: Therapeutic range for indication

Action Threshold: INR outside target range requires warfarin dose adjustment.

Signs of Pancreatitis (e.g., abdominal pain, nausea, vomiting)

Frequency: Daily

Target: Absence of symptoms

Action Threshold: New or worsening symptoms require immediate evaluation (e.g., amylase, lipase).

Signs of Superinfection (e.g., new fever, persistent diarrhea, oral thrush)

Frequency: Daily

Target: Absence of symptoms

Action Threshold: New or worsening symptoms require evaluation and appropriate treatment.

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Symptom Monitoring

  • Nausea
  • Vomiting
  • Diarrhea
  • Abdominal pain
  • Headache
  • Dizziness
  • Injection site reactions (pain, swelling, phlebitis)
  • Rash
  • Photosensitivity
  • Signs of pancreatitis (severe abdominal pain, radiating to back, nausea, vomiting)
  • Signs of pseudomembranous colitis (severe, persistent diarrhea, abdominal cramps, fever)
  • Signs of hypersensitivity reaction (rash, itching, swelling, severe dizziness, trouble breathing)

Special Patient Groups

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Pregnancy

Tigecycline is classified as Pregnancy Category D. It should not be used in pregnant women unless the potential benefits outweigh the potential risks to the fetus. Tetracycline-class drugs can cause permanent discoloration of teeth (yellow-gray-brown) and reversible inhibition of bone growth in the fetus.

Trimester-Specific Risks:

First Trimester: Potential for fetal harm, including tooth discoloration and bone growth inhibition, though risk may be lower than later trimesters.
Second Trimester: Significant risk of permanent tooth discoloration and reversible inhibition of bone growth.
Third Trimester: Significant risk of permanent tooth discoloration and reversible inhibition of bone growth.
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Lactation

Tigecycline is excreted in human milk. Due to the potential for serious adverse reactions in the breastfed infant (e.g., permanent tooth discoloration, inhibition of bone growth), 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: L4 (Potentially Hazardous) - Potential for permanent tooth discoloration and inhibition of bone growth. Monitor infant for gastrointestinal disturbances (diarrhea, candidiasis).
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Pediatric Use

Tigecycline is contraindicated in children under 8 years of age due to the potential for permanent tooth discoloration and reversible inhibition of bone growth. Its use in children and adolescents (under 18 years) is generally not recommended unless other agents are not suitable, due to the lack of established safety and efficacy and the potential for these adverse effects.

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Geriatric Use

No dose adjustment is required based on age. However, elderly patients may be more susceptible to adverse effects, particularly gastrointestinal side effects. Monitor closely for adverse reactions.

Clinical Information

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Clinical Pearls

  • Tigecycline has a broad spectrum of activity, including against MRSA, VRE, and ESBL-producing Gram-negative bacteria, but it lacks activity against *Pseudomonas aeruginosa* and *Proteus* species.
  • High incidence of gastrointestinal side effects (nausea, vomiting) is common, often requiring antiemetic prophylaxis.
  • The Black Box Warning regarding increased all-cause mortality means tigecycline should be reserved for situations where alternative treatments are not suitable.
  • Risk of pancreatitis, sometimes severe, has been reported. Monitor for new or worsening abdominal pain.
  • Not indicated for bloodstream infections due to lower serum concentrations compared to tissue concentrations, and concerns about efficacy in bacteremia.
  • Administer via IV infusion over 30-60 minutes to minimize infusion-related reactions.
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Alternative Therapies

  • Carbapenems (e.g., Meropenem, Imipenem/Cilastatin, Ertapenem) for broad-spectrum coverage.
  • Linezolid or Daptomycin for MRSA and VRE infections.
  • Ceftaroline for MRSA and some Gram-negative coverage.
  • Colistin or Polymyxin B for multi-drug resistant Gram-negative infections (often as salvage therapy).
  • Other tetracyclines (e.g., Doxycycline, Minocycline) for less severe infections or specific pathogens, but with different spectrums and resistance profiles.
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Cost & Coverage

Average Cost: Highly variable, typically several hundred dollars per vial per 50mg vial
Generic Available: Yes
Insurance Coverage: Tier 3 or 4 (Non-preferred Brand or Specialty Drug) for brand, Tier 1 or 2 for generic, often requires prior authorization due to Black Box Warning and specific indications.
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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, and do not take medication prescribed for someone else. Store all medications in a secure location, out of 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, avoid flushing medications down the toilet or pouring 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 come with an additional patient information leaflet, 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 amount, and the time it was taken to ensure prompt and effective treatment.