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Intravenous Dilution Guidelines

Tedizolid phosphate (SIVEXTRO™)

[ Usual Diluents ] [ Standard Dilution ] [ Storage and Stability ]
DESCRIPTION CLINICAL PHARMACOLOGY INDICATIONS AND USAGE
CONTRAINDICATIONS PRECAUTIONS ADVERSE REACTIONS
DOSAGE AND ADMINISTRATION HOW SUPPLIED WARNINGS
PRESCRIBING HIGHLIGHTS:  Please see package insert for additional information and possible updates to ensure safe and effective use of this medication. The authors make no claims of the accuracy of the information contained herein; and these suggested doses are not a substitute for clinical judgment. Neither GlobalRPh Inc. nor any other party involved in the preparation of this program shall be liable for any special, consequential, or exemplary damages resulting in whole or part from any user's use of or reliance upon this material. Please read the disclaimer carefully BEFORE accessing or using this site. BY ACCESSING OR USING THIS SITE, YOU AGREE TO BE BOUND BY THE TERMS AND CONDITIONS SET FORTH IN THE DISCLAIMER.  
 

Usual Diluents top of page

NS

Standard Dilutions   [Amount of drug] [Infusion volume] [Infusion rate] top of page

[Prescribed dose ]
[200mg]  [250 ml]  [60 minutes]


Preparation
The contents of the vial should be reconstituted using aseptic technique as follows:

Note: To minimize foaming, AVOID vigorous agitation or shaking of the vial during or after reconstitution.
  1. Reconstitute the SIVEXTRO vial with 4 mL of Sterile Water for Injection.
  2. Gently swirl the contents and let the vial stand until the cake has completely dissolved and any foam disperses.
  3. Inspect the vial to ensure the solution contains no particulate matter and no cake or powder remains attached to the sides of the vial. If necessary, invert the vial to dissolve any remaining powder and swirl gently to prevent foaming. The reconstituted solution is clear and colorless to pale-yellow in color; the total storage time should not exceed 24 hours at either room temperature or under refrigeration at 2°C to 8°C (36°F to 46°F).
  4. Tilt the upright vial and insert a syringe with appropriately sized needle into the bottom corner of the vial and remove 4 mL of the reconstituted solution. Do not invert the vial during extraction.
  5. The reconstituted solution must be further diluted in 250 mL of 0.9% Sodium Chloride Injection, USP. Slowly inject the 4 mL of reconstituted solution into a 250 mL bag of 0.9% Sodium Chloride Injection, USP. Invert the bag gently to mix. Do NOT shake the bag as this may cause foaming.

WARNINGS  top of page

See warnings and precautions below.


DESCRIPTION  top of page

Description:
SIVEXTRO (tedizolid phosphate), a phosphate prodrug, is converted to tedizolid in the presence of phosphatases.

Tedizolid phosphate has the chemical name [(5R)-(3-{3-Fluoro-4-[6-(2-methyl-2H-tetrazol- 5-yl) pyridin-3-yl]phenyl}-2-oxooxazolidin- 5-yl]methyl hydrogen phosphate.

Its empirical formula is C17H16FN6O6P and its molecular weight is 450.32.
Tedizolid phosphate is a white to yellow solid and is administered orally or by intravenous infusion.

The pharmacologically active moiety, tedizolid, is an antibacterial agent of the oxazolidinone class.

SIVEXTRO tablets contain 200 mg of tedizolid phosphate, and the following inactive ingredients: microcrystalline cellulose, mannitol, crospovidone, povidone, and magnesium stearate. In addition, the film coating contains the following inactive ingredients: polyvinyl alcohol, titanium dioxide, polyethylene glycol/macrogol, talc, and yellow iron oxide.

SIVEXTRO for injection is a sterile, white to off-white sterile lyophilized powder for injection in single-use vials of 200 mg. The inactive ingredients are mannitol (105 mg), sodium hydroxide, and hydrochloric acid, which is used in minimal quantities for pH adjustment.

CLINICAL PHARMACOLOGY: top of page

Microbiology:
Tedizolid belongs to the oxazolidinone class of antibacterial drugs.

Mechanism of Action
The antibacterial activity of tedizolid is mediated by binding to the 50S subunit of the bacterial ribosome resulting in inhibition of protein synthesis. Tedizolid inhibits bacterial protein synthesis through a mechanism of action different from that of other non-oxazolidinone class antibacterial drugs; therefore, cross-resistance between tedizolid and other classes of antibacterial drugs is unlikely. The results of in vitro time-kill studies show that tedizolid is bacteriostatic against enterococci, staphylococci, and streptococci.

INDICATIONS AND USAGE  top of page

INDICATIONS AND USAGE:
Acute Bacterial Skin and Skin Structure Infections
SIVEXTRO™ is an oxazolidinone-class antibacterial indicated for the treatment of acute bacterial skin and skin structure infections (ABSSSI) caused by susceptible isolates of the following Gram-positive microorganisms: Staphylococcus aureus (including methicillin-resistant [MRSA] and methicillin-susceptible [MSSA] isolates), Streptococcus pyogenes, Streptococcus agalactiae, Streptococcus anginosus Group (including Streptococcus anginosus, Streptococcus intermedius, and Streptococcus constellatus), and Enterococcus faecalis.

Usage
To reduce the development of drug-resistant bacteria and maintain the effectiveness of SIVEXTRO and other antibacterial drugs, SIVEXTRO should be used only to treat ABSSSI that are proven or strongly suspected to be caused by susceptible bacteria. When culture and susceptibility information are available, they should be considered in selecting or modifying antibacterial therapy. In the absence of such data, local epidemiology and susceptibility patterns may contribute to the empiric selection of therapy.

CONTRAINDICATIONS top of page

Contraindications:
None.

PRECAUTIONS top of page

WARNINGS AND PRECAUTIONS
Patients with neutropenia: The safety and efficacy of SIVEXTRO in patients with neutropenia (neutrophil counts <1000 cells/mm3) have not been adequately evaluated. In an animal model of infection, the antibacterial activity of SIVEXTRO was reduced in the absence of granulocytes. Consider alternative therapies in neutropenic patients.
Clostridium difficile-associated diarrhea: Evaluate if diarrhea occurs.

ADVERSE REACTIONS top of page

ADVERSE REACTIONS
The most common adverse reactions (>/=2%) are nausea, headache, diarrhea, vomiting, and dizziness.

To report SUSPECTED ADVERSE REACTIONS, contact Cubist Pharmaceuticals at 1-877-282-4786 or FDA at 1-800-FDA-1088 or www.fda.gov/medwatch.

See package insert for PATIENT COUNSELING INFORMATION.

DOSAGE AND ADMINISTRATION  top of page

DOSAGE AND ADMINISTRATION:
Recommended Dosage
The recommended dosage of SIVEXTRO is 200 mg administered once daily for six (6) days as an intravenous (IV) infusion in patients 18 years of age or older.

No dose adjustment is necessary when changing from intravenous to oral SIVEXTRO.

Preparation and Administration of Intravenous Solution
SIVEXTRO is supplied as a sterile, lyophilized powder for injection in single-use vials of 200 mg. Each 200 mg vial must be reconstituted with Sterile Water for Injection and subsequently diluted only with 0.9% Sodium Chloride Injection, USP.

SIVEXTRO vials contain no antimicrobial preservatives and are intended for single use only.

Preparation
The contents of the vial should be reconstituted using aseptic technique as follows:

Note: To minimize foaming, AVOID vigorous agitation or shaking of the vial during or after reconstitution.
  1. Reconstitute the SIVEXTRO vial with 4 mL of Sterile Water for Injection.
  2. Gently swirl the contents and let the vial stand until the cake has completely dissolved and any foam disperses.
  3. Inspect the vial to ensure the solution contains no particulate matter and no cake or powder remains attached to the sides of the vial. If necessary, invert the vial to dissolve any remaining powder and swirl gently to prevent foaming. The reconstituted solution is clear and colorless to pale-yellow in color; the total storage time should not exceed 24 hours at either room temperature or under refrigeration at 2°C to 8°C (36°F to 46°F).
  4. Tilt the upright vial and insert a syringe with appropriately sized needle into the bottom corner of the vial and remove 4 mL of the reconstituted solution. Do not invert the vial during extraction.
  5. The reconstituted solution must be further diluted in 250 mL of 0.9% Sodium Chloride Injection, USP. Slowly inject the 4 mL of reconstituted solution into a 250 mL bag of 0.9% Sodium Chloride Injection, USP. Invert the bag gently to mix. Do NOT shake the bag as this may cause foaming.
 Administration
Administer as an intravenous infusion only.

Do not administer as an intravenous push or bolus. Do not mix SIVEXTRO with other drugs when administering. It is not intended for intra-arterial, intramuscular, intrathecal, intraperitoneal, or subcutaneous administration.

The intravenous bag containing the reconstituted and diluted intravenous solution should be inspected visually for particulate matter prior to administration. Discard if visible particles are observed. The resulting solution is clear and colorless to pale-yellow in color.

After reconstitution and dilution, SIVEXTRO is to be administered via intravenous infusion using a total time of 1 hour.

Stability:
The total time from reconstitution to administration should not exceed 24 hours at room temperature or under refrigeration at 2°C to 8°C (36°F to 46°F).

Compatible Intravenous Solutions
SIVEXTRO is compatible with 0.9% Sodium Chloride Injection, USP.

Incompatibilities
SIVEXTRO for injection is incompatible with any solution containing divalent cations (e.g., Ca2+, Mg2+), including Lactated Ringer's Injection and Hartmann's Solution.

Limited data are available on the compatibility of SIVEXTRO for injection with other intravenous substances, additives or other medications and they should not be added to SIVEXTRO single-use vials or infused simultaneously. If the same intravenous line is used for sequential infusion of several different drugs, the line should be flushed before and after infusion of SIVEXTRO with 0.9% Sodium Chloride Injection, USP.

HOW SUPPLIED  top of page

For Injection
SIVEXTRO is supplied as a sterile, lyophilized powder for injection in single-use vials of 200 mg. Each 200 mg vial must be reconstituted with Sterile Water for Injection and subsequently diluted only with 0.9% Sodium Chloride Injection, USP.

They are supplied as follows:
Package of ten 200 mg single-dose vials (NDC 67919-040-01)

Storage and Handling
SIVEXTRO tablets and SIVEXTRO for injection should be stored at 20°C to 25°C (68°F to 77°F); excursions permitted to 15°C to 30°C (59°F to 86°F) [see USP Controlled Room Temperature].

Storage and Stability top of page


Stability:
The total time from reconstitution to administration should not exceed 24 hours at room temperature or under refrigeration at 2°C to 8°C (36°F to 46°F).



Disclaimer
The authors make no claims of the accuracy of the information contained herein; and these suggested doses are not a substitute for clinical judgment. Neither GlobalRPh Inc. nor any other party involved in the preparation of this program shall be liable for any special, consequential, or exemplary damages resulting in whole or part from any user's use of or reliance upon this material.  PLEASE READ THE DISCLAIMER CAREFULLY BEFORE ACCESSING OR USING THIS SITE. BY ACCESSING OR USING THIS SITE, YOU AGREE TO BE BOUND BY THE TERMS AND CONDITIONS SET FORTH IN THE DISCLAIMER.
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