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Ferric Carboxymaltose Injection
Overview
What is Injectafer?
Ferric carboxymaltose, an iron replacement product, is an iron carbohydrate complex with the chemical name of polynuclear iron (III) hydroxide 4(R)-(poly-(1→4)--α-D-glucopyranosyl)-oxy-2(R),3(S),5(R),6-tetrahydroxy-hexanoate. It has a relative molecular weight of approximately 150,000 Da corresponding to the following empirical formula:
[FeO(OH)(HO)] [{(CHO) (CHO)}],
where n ≈ 10, m ≈ 8, 11, and ≈ 4(represents the mean branching degree of the ligand).
The chemical structure is presented below:
Injectafer (ferric carboxymaltose injection) is a dark brown, sterile, aqueous, isotonic colloidal solution for intravenous injection. Each mL contains 50 mg iron as ferric carboxymaltose in water for injection. Injectafer is available in 15 mL single-use vials. Sodium hydroxide and/or hydrochloric acid may have been added to adjust the pH to 5.0-7.0.
Vial closure is not made with natural rubber latex.
What does Injectafer look like?
What are the available doses of Injectafer?
Injection: 750 mg iron/15 mL single-dose vial.
What should I talk to my health care provider before I take Injectafer?
Lactation: Monitor breastfed infants for gastrointestinal toxicity. ()
How should I use Injectafer?
Injectafer is indicated for the treatment of iron deficiency anemia in adult patients:
For patients weighing 50 kg (110 lb) or more: Give Injectafer in two doses separated by at least 7 days. Give each dose as 750 mg for a total cumulative dose not to exceed 1500 mg of iron per course.
For patients weighing less than 50 kg (110 lb): Give Injectafer in two doses separated by at least 7 days. Give each dose as 15 mg/kg body weight for a total cumulative dose not to exceed 1500 mg of iron per course.
The dosage of Injectafer is expressed in mg of elemental iron. Each mL of Injectafer contains 50 mg of elemental iron. Injectafer treatment may be repeated if iron deficiency anemia reoccurs.
Administer Injectafer intravenously, either as an undiluted slow intravenous push or by infusion. When administering as a slow intravenous push, give at the rate of approximately 100 mg (2 mL) per minute. When administered via infusion, dilute up to 750 mg of iron in no more than 250 mL of sterile 0.9% sodium chloride injection, USP, such that the concentration of the infusion is not less than 2 mg of iron per mL and administer over at least 15 minutes.
When added to an infusion bag containing 0.9% sodium chloride injection, USP, at concentrations ranging from 2 mg to 4 mg of iron per mL, Injectafer solution is physically and chemically stable for 72 hours when stored at room temperature. To maintain stability, do not dilute to concentrations less than 2 mg iron/mL.
Inspect parenteral drug products visually for the absence of particulate matter and discoloration prior to administration. The product contains no preservatives. Each vial of Injectafer is intended for single-use only. Any unused drug remaining after injection must be discarded.
Avoid extravasation of Injectafer since brown discoloration of the extravasation site may be long lasting. Monitor for extravasation. If extravasation occurs, discontinue the Injectafer administration at that site.
What interacts with Injectafer?
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What are the warnings of Injectafer?
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What are the precautions of Injectafer?
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What are the side effects of Injectafer?
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What should I look out for while using Injectafer?
Hypersensitivity to Injectafer or any of its components [see ].
What might happen if I take too much Injectafer?
Excessive dosages of Injectafer may lead to accumulation of iron in storage sites potentially leading to hemosiderosis. A patient who received Injectafer 18,000 mg over 6 months developed hemosiderosis with multiple joint disorder, walking disability and asthenia. Hypophosphatemic osteomalacia was reported in a patient who received Injectafer 4000 mg over 4 months. Partial recovery followed discontinuation of Injectafer [].
How should I store and handle Injectafer?
Store at 20°-25°C (68°-77°F) [see USP Controlled Room Temperature].Dispense in a tight, light-resistant container as defined in the USP/NF with a child-resistant closure.A Schedule CII Narcotic.Store at 20°-25°C (68°-77°F) [see USP Controlled Room Temperature].Dispense in a tight, light-resistant container as defined in the USP/NF with a child-resistant closure.A Schedule CII Narcotic.Store at 20°-25°C (68°-77°F) [see USP Controlled Room Temperature].Dispense in a tight, light-resistant container as defined in the USP/NF with a child-resistant closure.A Schedule CII Narcotic.NDC 0517-0650-01 750 mg iron/15 mL Single-Dose Vial Individually boxedNDC 0517-0650-02 750 mg iron/15 mL Single-Dose Vial Packages of 2Store 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 the USP controlled room temperature]. Do not freeze. NDC 0517-0650-01 750 mg iron/15 mL Single-Dose Vial Individually boxedNDC 0517-0650-02 750 mg iron/15 mL Single-Dose Vial Packages of 2Store 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 the USP controlled room temperature]. Do not freeze.
Clinical Information
Chemical Structure
No Image foundClinical Pharmacology
Ferric carboxymaltose is a colloidal iron (III) hydroxide in complex with carboxymaltose, a carbohydrate polymer that releases iron.
Non-Clinical Toxicology
Hypersensitivity to Injectafer or any of its components [see ].Clindamycin has been shown to have neuromuscular blocking properties that may enhance the action of other neuromuscular blocking agents. Therefore, it should be used with caution in patients receiving such agents.
Clindamycin is metabolized predominantly by CYP3A4, and to a lesser extent by CYP3A5, to the major metabolite clindamycin sulfoxide and minor metabolite N-desmethylclindamycin. Therefore inhibitors of CYP3A4 and CYP3A5 may increase plasma concentrations of clindamycin and inducers of these isoenzymes may reduce plasma concentrations of clindamycin. In the presence of strong CYP3A4 inhibitors, monitor for adverse reactions. In the presence of strong CYP3A4 inducers such as rifampicin, monitor for loss of effectiveness.
In vitro
Antagonism has been demonstrated between clindamycin and erythromycin . Because of possible clinical significance, these two drugs should not be administered concurrently.
Serious hypersensitivity reactions, including anaphylactic-type reactions, some of which have been life-threatening and fatal, have been reported in patients receiving Injectafer. Patients may present with shock, clinically significant hypotension, loss of consciousness, and/or collapse. Monitor patients for signs and symptoms of hypersensitivity during and after Injectafer administration for at least 30 minutes and until clinically stable following completion of the infusion. Only administer Injectafer when personnel and therapies are immediately available for the treatment of serious hypersensitivity reactions. [see ] In clinical trials, serious anaphylactic/anaphylactoid reactions were reported in 0.1% (2/1775) of subjects receiving Injectafer. Other serious or severe adverse reactions potentially associated with hypersensitivity which included, but not limited to, pruritus, rash, urticaria, wheezing, or hypotension were reported in 1.5% (26/1775) of these subjects.
The following adverse reactions are discussed in greater detail in other sections of the labeling:
Reference
This information is obtained from the National Institute of Health's Standard Packaging Label drug database.
"https://dailymed.nlm.nih.gov/dailymed/"
While we update our database periodically, we cannot guarantee it is always updated to the latest version.
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