What are the recommended dilution guidelines for a 50 mg vial of tigecycline?

Tigecycline 50mg Dilution Guidelines

Reconstitute each 50mg vial with 5.3 mL of 0.9% Sodium Chloride, 5% Dextrose, or Lactated Ringer's solution to achieve a concentration of 10 mg/mL, then withdraw 5 mL of this reconstituted solution and add it to a 100 mL IV bag for infusion over 30-60 minutes. 1

Detailed Preparation Steps

Reconstitution Process

• Add 5.3 mL of compatible diluent to each 50mg vial (note: vials contain 6% overage, so 5 mL of reconstituted solution = 50mg drug) 1
• Gently swirl the vial until drug dissolves completely
• Final concentration after reconstitution: 10 mg/mL

Compatible Diluents for Reconstitution

• 0.9% Sodium Chloride Injection, USP
• 5% Dextrose Injection, USP
• Lactated Ringer's Injection, USP 1

Final Dilution for Infusion

• Withdraw 5 mL of the reconstituted solution from the vial
• Add to 100 mL IV bag for infusion
• For 100mg dose: reconstitute two vials and add both to the 100 mL bag
• For 50mg dose: reconstitute one vial and add to the 100 mL bag 1

Administration Parameters

Infusion Time

• Administer over 30-60 minutes every 12 hours 1

Standard Dosing Regimen

• Loading dose: 100 mg IV (first dose)
• Maintenance: 50 mg IV every 12 hours 2, 1

Special Populations Requiring Dose Adjustment

Severe Hepatic Impairment (Child-Pugh C):

• Loading dose: 100 mg IV
• Reduced maintenance: 25 mg IV every 12 hours 1
• No adjustment needed for mild-moderate hepatic impairment (Child-Pugh A/B)

Pediatric Patients (8-17 years):

• Ages 8-11: 1.2 mg/kg IV every 12 hours (maximum 50 mg/dose)
• Ages 12-17: 50 mg IV every 12 hours
• Avoid use unless no alternatives available due to increased mortality risk in adults 1

Critical Safety Considerations

• No preservatives in the formulation 1
• No renal dose adjustment required 1
• Tigecycline carries an FDA boxed warning for increased all-cause mortality (0.6% risk difference) 1
• Reserve for situations when alternative treatments are not suitable 1