"The US Food and Drug Administration (FDA) is ordering stricter warnings and contraindications for the anemia drug ferumoxytol (Ferumoxytol, AMAG Pharmaceuticals), stating that even with current warnings, there have been 79 anaphylactic r"...
The following serious adverse reactions are discussed in greater detail in other sections of the labeling:
- Hypersensitivity [see CONTRAINDICATIONS and WARNINGS AND PRECAUTIONS]
- Hypotension [see WARNINGS AND PRECAUTIONS]
Clinical Trials Experience
Because clinical studies are conducted under widely varying conditions, adverse reaction rates observed in the clinical studies of a drug cannot be directly compared to rates in the clinical studies of another drug and may not reflect the rates observed in practice.
The most commonly reported adverse reactions ( ≥ 10%) in adult patients were nausea, vomiting and/or diarrhea, injection site reaction, hypotension, cramps, hypertension, dizziness, abnormal erythrocytes (e.g., changes in morphology, color, or number of red blood cells), dyspnea, chest pain, leg cramps and pain. In patients 6 to 15 years of age the most common adverse reactions ( ≥ 10%) were hypotension, headache, hypertension, tachycardia and vomiting.
Studies A and B
In multiple dose Studies A and B (total 126 adult patients), the most frequent treatment emergent adverse reactions following Ferrlecit were:
Body as a Whole: injection site reaction (33%), chest pain (10%), pain (10%), asthenia (7%), headache (7%), fatigue (6%), fever (5%), malaise, infection, abscess, chills, rigors, carcinoma, flu-like syndrome, sepsis, lightheadedness, weakness.
Nervous System: cramps (25%), dizziness (13%), paresthesias (6%), agitation, somnolence, decreased level of consciousness.
Genitourinary System: urinary tract infection, and menorrahagia.
Study C – Pediatric
Pediatric Patients: In a clinical trial of 66 iron-deficient pediatric hemodialysis patients, 6 to 15 years of age, inclusive, who were receiving a stable erythropoietin dosing regimen, the most common adverse reactions, occurring in ≥ 5%, regardless of treatment dosage, were: hypotension (35%), headache (24%), hypertension (23%), tachycardia (17%), vomiting (11%), fever (9%), nausea (9%), abdominal pain (9%), pharyngitis (9%), diarrhea (8%), infection (8%), rhinitis (6%), and thrombosis (6%). More patients in the higher dose group (3.0 mg/kg) than in the lower dose group (1.5 mg/kg) experienced the following adverse events: hypotension (41% vs. 28%), tachycardia (21% vs. 13%), fever (15% vs. 3%), headache (29% vs. 19%), abdominal pain (15% vs. 3%), nausea (12% vs. 6%), vomiting (12% vs. 9%), pharyngitis (12% vs. 6%), and rhinitis (9% vs. 3%).
Post Marketing Experience
In the single-dose, postmarketing safety study, 11% of patients who received Ferrlecit and 9.4% of patients who received placebo reported adverse reactions. The most frequent adverse reactions following Ferrlecit were: hypotension (2%), nausea, vomiting and/or diarrhea (2%), pain (0.7%), hypertension (0.6%), allergic reaction (0.5%), chest pain (0.5%), pruritus (0.5%), and back pain (0.4%). The following additional events were reported in two or more patients: hypertonia, nervousness, dry mouth, and hemorrhage.
In the multiple-dose, open-label surveillance study, 28% of the patients received concomitant angiotensin converting enzyme inhibitor (ACEi) therapy. The incidences of both drug intolerance or suspected allergic events following first dose Ferrlecit administration were 1.6% in patients with concomitant ACEi use compared to 0.7% in patients without concomitant ACEi use. The patient with a life-threatening event was not on ACEi therapy. One patient had facial flushing immediately on Ferrlecit exposure. No hypotension occurred and the event resolved rapidly and spontaneously without intervention other than drug withdrawal.
The following additional adverse reactions have been identified with the use of Ferrlecit from postmarketing spontaneous reports: anaphylactic-type reactions, shock, loss of consciousness, convulsion, skin discoloration, pallor, phlebitis, dysgeusia, and hypoesthesia.
Individual doses exceeding 125 mg may be associated with a higher incidence and/or severity of adverse events based on information from postmarketing spontaneous reports. These adverse events included hypotension, nausea, vomiting, abdominal pain, diarrhea, dizziness, dyspnea, urticaria, chest pain, paresthesia, and peripheral swelling.
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.
Read the Ferrlecit (sodium ferric gluconate) Side Effects Center for a complete guide to possible side effects
Drug-drug interactions involving Ferrlecit have not been studied. Ferrlecit may reduce the absorption of concomitantly administered oral iron preparations.This monograph has been modified to include the generic and brand name in many instances.
Last reviewed on RxList: 8/31/2011
Additional Ferrlecit Information
Report Problems to the Food and Drug Administration
You are encouraged to report negative side effects of prescription drugs to the FDA. Visit the FDA MedWatch website or call 1-800-FDA-1088.
Find out what women really need.