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Dosing &
Administering Injectafer
Fully replenish your patient's iron deficit with Injectafer
Injectafer provides the most iron per course of treatment—up to 1500 mg in 2 doses of 750 mg separated by at least 7 days.1-6* Injectafer is also available as a 100 mg iron/2 mL single-dose vial.1
Artist's rendering.
1500 mg†‡ in one course of treatment
Artist's rendering.
IV infusion over at least 15 minutes
Slow IV push over 7.5 minutes
* Compared to the dosing regimens of other IV iron treatments.1-6
† For patients weighing less than 50 kg (110 lb), give each dose as 15 mg/kg body weight for a total cumulative dose not to exceed 1500 mg of iron per course of treatment.
‡ When administered via IV 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 <2 mg of iron per mL, and administer over at least 15 minutes. When administered as a slow IV push, give at the rate of approximately 100 mg (2 mL) per minute.1
Injectafer treatment may be repeated if iron deficiency anemia (IDA) reoccurs. Monitor serum phosphate levels in patients at risk for low serum phosphate who require a repeat course of treatment.1
Injectafer is the most studied IV iron treatment in the world7§
§Source: Trialtrove®, Mar 2021.
The evidence for administering 1500 mg of iron per course of treatment
In 7 clinical trials including over 4600 patients, average iron deficits were ≈1500 mg8
Average calculated iron deficits in Injectafer clinical trials||
||Calculated iron deficit based on a modified Ganzoni formula: subject weight in kg x (15 - current Hb g/dL) x 2.4 + 500. If subject has a TSAT of >20% and ferritin of >50 ng/mL, the 500-mg constant is not needed.
¶Reported etiologies included chronic kidney disease (CKD), heavy uterine bleeding (HUB) (now commonly referred to as abnormal uterine bleeding or AUB), GI-related conditions, postpartum, and other/unknown.9,10
#Reported etiologies included HUB (now commonly referred to as AUB), GI disorders, postpartum, nutritional or dietary deficiency, and other.11
Injectafer is the only FDA-approved IV iron that restores up to 1500 mg of iron
in 2 administrations of 750 mg separated by at least 7 days1
Injectafer is available as a
750 mg iron/15 mL single dose vial and as a 100 mg iron/2 mL single-dose vial. 1
Not actual size.
Important Dosing and Administering Information
Infusion bag size
Dilute Injectafer in up to 250 mL (but not more) 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.1 If you need further guidance, contact your Injectafer Territory Manager to arrange a consultation with an Oncology Clinical Educator.
Needle size
The infusion nurse or administering healthcare professional should assess the patient’s vein status and choose an appropriate gauge needle. If you need further guidance, contact your Injectafer Territory Manager to arrange a consultation with an Oncology Clinical Educator.
Filtered tubing
Filtered tubing is not necessary. If you need further guidance, contact your Injectafer Territory Manager to arrange a consultation with an Oncology Clinical Educator.
Mixing Injectafer
Dilute up to 750 mg of Injectafer in up to 250 mL (but not more) 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. Administer over at least 15 minutes.1
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.1
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.1
Dosing for patients who weigh 50 kg or more
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 of 1500 mg of iron per course.1
Dosing for patients who weigh less than 50 kg
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.1
Administering by IV push
Injectafer may be administered as an undiluted slow intravenous push. Give at the rate of approximately 100 mg (2 mL) per minute.1
Special precautions
Injectafer should only be administered when personnel and therapies are immediately available for the treatment of serious hypersensitivity reactions.1
Storage prior to use
Store Injectafer at 20˚C to 25˚C (68˚F to 77˚F), excursions permitted to 15˚C to 30˚C (59˚F to 86˚F). Do not freeze.1
Occurrence of extravasation
Monitor for extravasation, and if it occurs, discontinue the Injectafer administration at that site immediately.1
Most common side effects of Injectafer
- The most common side effects of Injectafer in the pivotal trials (reported by ≥2% of study patients) were: nausea (7.2%); hypertension (4%); flushing (4%); injection site reactions (3%); erythema (3%); hypophosphatemia (2.1%); dizziness (2.1%); and vomiting (2%)
- In pivotal trials 1 and 2 for Injectafer, serious anaphylactic/anaphylactoid reactions were reported in 0.1% (2/1775) of subjects receiving Injectafer
- Pivotal trials for Injectafer included patients with a history of oral iron intolerance, drug allergies (with the exception of known hypersensitivity to study treatments), and hypotension11,12
References:
- Injectafer [package insert]. Shirley, NY: American Regent, Inc.; February 2022.
- Venofer® (iron sucrose) injection, USP [package insert]. Shirley, NY: American Regent, Inc.; 2020.
- Ferrlecit® (sodium ferric gluconate complex in sucrose injection) [package insert]. Bridgewater, NJ: Sanofi-Aventis US LLC; 2020.
- INFeD® (Iron Dextran Injection USP) [package insert]. Parsippany, NJ: Allergan, Inc; 2020.
- Feraheme® (ferumoxytol injection) [package insert]. Waltham, MA: AMAG Pharmaceuticals, Inc; 2020.
- Monoferric® (ferric derisomaltose) [package insert]. Holbaek, Denmark: Pharmacosmos A/S; 2020.
- Data on file. Daiichi Sankyo Inc., Basking Ridge, NJ.
- Koch TA, Myers J, Goodnough LT. Intravenous iron therapy in patients with iron deficiency anemia: dosing considerations. Anemia. 2015. doi:10.1155/2015/763576.
- Hussain I, Bhoyroo J, Butcher A, Koch TA, He A, Bregman DB. Direct comparison of the safety and efficacy of ferric carboxymaltose versus iron dextran in patients with iron deficiency anemia. Anemia. 2013. doi:10.1155/2013/169107.
- Barish CF, Koch T, Butcher A, Morris D, Bregman DB. Safety and efficacy of intravenous ferric carboxymaltose (750 mg) in the treatment of iron deficiency anemia: two randomized, controlled trials. Anemia. 2012. doi:10.1155/2012/172104.
- Onken JE, Bregman OB, Harrington RA, et aI. A multicenter, randomized, active-controlled study to investigate the efficacy and safety of intravenous ferric carboxymaltose in patients with iron deficiency anemia. Transfusion. 2014;54(2):306-315.
- Onken JE, Bregman DB, Harrington RA, et al. Ferric carboxymaltose in patients with iron-deficiency anemia and impaired renal function: the REPAIR-IDA trial. Nephrol Dial Transplant. 2014;29(4):833-842.
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IMPORTANT SAFETY INFORMATION
INDICATIONS
Injectafer® (ferric carboxymaltose injection) is indicated for the treatment of iron deficiency anemia (IDA) in adult and pediatric patients 1 year of age and older who have either intolerance to oral iron or an unsatisfactory response to oral iron, or adult patients who have non-dialysis dependent chronic kidney disease.
IMPORTANT SAFETY INFORMATION
CONTRAINDICATIONS
Injectafer is contraindicated in patients with hypersensitivity to Injectafer or any of its inactive components.
WARNINGS AND PRECAUTIONS
Symptomatic hypophosphatemia requiring clinical intervention has been reported in patients at risk of low serum phosphate in the postmarketing setting. These cases have occurred mostly after repeated exposure to Injectafer in patients with no reported history of renal impairment. Possible risk factors for hypophosphatemia include a history of gastrointestinal disorders associated with malabsorption of fat- soluble vitamins or phosphate, concurrent or prior use of medications that affect proximal renal tubular function, hyperparathyroidism, vitamin D deficiency and malnutrition. In most cases, hypophosphatemia resolved within three months.
Monitor serum phosphate levels in patients at risk for low serum phosphate who require a repeat course of treatment.
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. 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 were not limited to, pruritus, rash, urticaria, wheezing, or hypotension were reported in 1.5% (26/1775) of these subjects.
In clinical studies, hypertension was reported in 4% (67/1775) of subjects in clinical trials 1 and 2. Transient elevations in systolic blood pressure, sometimes occurring with facial flushing, dizziness, or nausea were observed in 6% (106/1775) of subjects in these two clinical trials. These elevations generally occurred immediately after dosing and resolved within 30 minutes. Monitor patients for signs and symptoms of hypertension following each Injectafer administration.
In the 24 hours following administration of Injectafer, laboratory assays may overestimate serum iron and transferrin bound iron by also measuring the iron in Injectafer.
ADVERSE REACTIONS
Adults
In two randomized clinical studies [Studies 1 and 2], a total of 1775 patients were exposed to Injectafer, 15 mg/kg of body weight, up to a maximum single dose of 750 mg of iron on two occasions, separated by at least 7 days, up to a cumulative dose of 1500 mg of iron. Adverse reactions reported by >2% of Injectafer-treated patients were nausea (7.2%); hypertension (4%); flushing (4%); injection site reactions (3%); erythema (3%); hypophosphatemia (2.1%); and dizziness (2.1%).
The following adverse reactions have been identified during post approval use of Injectafer. Because these reactions are reported voluntarily from a population of uncertain size, it is not always possible to reliably estimate their frequency or establish a causal relationship to drug exposure.
The following adverse reactions have been reported from the post-marketing spontaneous reports with Injectafer: cardiac disorders: tachycardia; general disorders and administration site conditions: chest discomfort, chills, pyrexia; metabolism and nutrition disorders: hypophosphatemia; musculoskeletal and connective tissue disorders: arthralgia, back pain, hypophosphatemic osteomalacia (rarely reported event); nervous system disorders: syncope; respiratory, thoracic and mediastinal disorders: dyspnea; skin and subcutaneous tissue disorders: angioedema, erythema, pruritus, urticaria; pregnancy: fetal bradycardia.
Pediatric
The safety of Injectafer in pediatric patients was evaluated in Study 3. Study 3 was a randomized, active-controlled study in which 40 patients (1 to 12 years of age: 10 patients, 12 to 17 years of age: 30 patients) received Injectafer 15 mg/kg to a maximum single dose of 750 mg (whichever was smaller) on Days 0 and 7 for a maximum total dose of 1500 mg; 38 patients evaluable for safety in the control arm received an age-dependent formulation of oral ferrous sulfate for 28 days. The median age of patients who received Injectafer was 14.5 years (range, 1-17); 83% were female; 88% White and 13% Black. The most common adverse reactions (≥4%) were hypophosphatemia, injection site reactions, rash, headache, and vomiting.
CLINICAL CONSIDERATIONS IN PREGNANCY
Untreated IDA in pregnancy is associated with adverse maternal outcomes such as postpartum anemia. Adverse pregnancy outcomes associated with IDA include increased risk for preterm delivery and low birth weight.
Severe adverse reactions including circulatory failure (severe hypotension, shock including in the context of anaphylactic reaction) may occur in pregnant women with parenteral iron products (such as Injectafer) which may cause fetal bradycardia, especially during the second and third trimester.
You are encouraged to report Adverse Drug Events to American Regent, Inc. at 1-800-734-9236 or to the FDA by visiting www.fda.gov/medwatch or calling 1-800-FDA-1088.
IMPORTANT SAFETY INFORMATION
INDICATIONS
Injectafer® (ferric carboxymaltose injection) is indicated for the treatment of iron deficiency anemia (IDA) in adult and pediatric patients 1 year of age and older who have either intolerance to oral iron or an unsatisfactory response to oral iron, or adult patients who have non-dialysis dependent chronic kidney disease.
IMPORTANT SAFETY INFORMATION
CONTRAINDICATIONS
Injectafer is contraindicated in patients with hypersensitivity to Injectafer or any of its inactive components.
WARNINGS AND PRECAUTIONS
Symptomatic hypophosphatemia requiring clinical intervention has been reported in patients at risk of low serum phosphate in the postmarketing setting. These cases have occurred mostly after repeated exposure to Injectafer in patients with no reported history of renal impairment. Possible risk factors for hypophosphatemia include a history of gastrointestinal disorders associated with malabsorption of fat- soluble vitamins or phosphate, concurrent or prior use of medications that affect proximal renal tubular function, hyperparathyroidism, vitamin D deficiency and malnutrition. In most cases, hypophosphatemia resolved within three months.
Monitor serum phosphate levels in patients at risk for low serum phosphate who require a repeat course of treatment.
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. 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 were not limited to, pruritus, rash, urticaria, wheezing, or hypotension were reported in 1.5% (26/1775) of these subjects.
In clinical studies, hypertension was reported in 4% (67/1775) of subjects in clinical trials 1 and 2. Transient elevations in systolic blood pressure, sometimes occurring with facial flushing, dizziness, or nausea were observed in 6% (106/1775) of subjects in these two clinical trials. These elevations generally occurred immediately after dosing and resolved within 30 minutes. Monitor patients for signs and symptoms of hypertension following each Injectafer administration.
In the 24 hours following administration of Injectafer, laboratory assays may overestimate serum iron and transferrin bound iron by also measuring the iron in Injectafer.
ADVERSE REACTIONS
Adults
In two randomized clinical studies [Studies 1 and 2], a total of 1775 patients were exposed to Injectafer, 15 mg/kg of body weight, up to a maximum single dose of 750 mg of iron on two occasions, separated by at least 7 days, up to a cumulative dose of 1500 mg of iron. Adverse reactions reported by >2% of Injectafer-treated patients were nausea (7.2%); hypertension (4%); flushing (4%); injection site reactions (3%); erythema (3%); hypophosphatemia (2.1%); and dizziness (2.1%).
The following adverse reactions have been identified during post approval use of Injectafer. Because these reactions are reported voluntarily from a population of uncertain size, it is not always possible to reliably estimate their frequency or establish a causal relationship to drug exposure.
The following adverse reactions have been reported from the post-marketing spontaneous reports with Injectafer: cardiac disorders: tachycardia; general disorders and administration site conditions: chest discomfort, chills, pyrexia; metabolism and nutrition disorders: hypophosphatemia; musculoskeletal and connective tissue disorders: arthralgia, back pain, hypophosphatemic osteomalacia (rarely reported event); nervous system disorders: syncope; respiratory, thoracic and mediastinal disorders: dyspnea; skin and subcutaneous tissue disorders: angioedema, erythema, pruritus, urticaria; pregnancy: fetal bradycardia.
Pediatric
The safety of Injectafer in pediatric patients was evaluated in Study 3. Study 3 was a randomized, active-controlled study in which 40 patients (1 to 12 years of age: 10 patients, 12 to 17 years of age: 30 patients) received Injectafer 15 mg/kg to a maximum single dose of 750 mg (whichever was smaller) on Days 0 and 7 for a maximum total dose of 1500 mg; 38 patients evaluable for safety in the control arm received an age-dependent formulation of oral ferrous sulfate for 28 days. The median age of patients who received Injectafer was 14.5 years (range, 1-17); 83% were female; 88% White and 13% Black. The most common adverse reactions (≥4%) were hypophosphatemia, injection site reactions, rash, headache, and vomiting.
CLINICAL CONSIDERATIONS IN PREGNANCY
Untreated IDA in pregnancy is associated with adverse maternal outcomes such as postpartum anemia. Adverse pregnancy outcomes associated with IDA include increased risk for preterm delivery and low birth weight.
Severe adverse reactions including circulatory failure (severe hypotension, shock including in the context of anaphylactic reaction) may occur in pregnant women with parenteral iron products (such as Injectafer) which may cause fetal bradycardia, especially during the second and third trimester.
You are encouraged to report Adverse Drug Events to American Regent, Inc. at 1-800-734-9236 or to the FDA by visiting www.fda.gov/medwatch or calling 1-800-FDA-1088.
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Click on your specialty for specific content tailored to your practice.