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Questions & Answers
Side Effects & Adverse Reactions
Acute and transient "flu-like" symptoms such as fever and chills induced by ACTIMMUNE at doses of 250 mcg/m2/day (greater than 10 times the weekly recommended dose) or higher may exacerbate pre-existing cardiac conditions. ACTIMMUNE should be used with caution in patients with pre-existing cardiac conditions, including ischemia, congestive heart failure or arrhythmia.
Decreased mental status, gait disturbance and dizziness have been observed, particularly in patients receiving ACTIMMUNE doses greater than 250 mcg/m2/day (greater than 10 times the weekly recommended dose). Most of these abnormalities were mild and reversible within a few days upon dose reduction or discontinuation of therapy. Caution should be exercised when administering ACTIMMUNE to patients with seizure disorders or compromised central nervous system function.
Reversible neutropenia and thrombocytopenia that can be severe and may be dose related have been observed during ACTIMMUNE therapy. Caution should be exercised when administering ACTIMMUNE to patients with myelosuppression.
Elevations of AST and/or ALT (up to 25-fold) have been observed during ACTIMMUNE therapy. The incidence appeared to be higher in patients less than 1 year of age compared to older children. The transaminase elevations were reversible with reduction in dosage or interruption of ACTIMMUNE treatment. Patients begun on ACTIMMUNE before age one year should receive monthly assessments of liver function. If severe hepatic enzyme elevations develop, ACTIMMUNE dosage should be modified (see DOSAGE AND ADMINISTRATION: Dose Modification).
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FDA Safety Alerts
There are currently no FDA safety alerts available for this drug.
There is currently no manufacturer warning information available for this drug.
FDA Labeling Changes
There are currently no FDA labeling changes available for this drug.
ACTIMMUNE is indicated for reducing the frequency and severity of serious infections associated with Chronic Granulomatous Disease.
ACTIMMUNE is indicated for delaying time to disease progression in patients with severe, malignant osteopetrosis.
There is currently no drug history available for this drug.
ACTIMMUNE® (Interferon gamma-1b), a biologic response modifier, is a single-chain polypeptide containing 140 amino acids. Production of ACTIMMUNE is achieved by fermentation of a genetically engineered Escherichia coli bacterium containing the DNA which encodes for the human protein. Purification of the product is achieved by conventional column chromatography. ACTIMMUNE is a highly purified sterile solution consisting of non-covalent dimers of two identical 16,465 dalton monomers; with a specific activity of 20 million International Units (IU)/mg (2x106 IU per 0.5 mL) which is equivalent to 30 million units/mg.
ACTIMMUNE is a sterile, clear, colorless solution filled in a single-use vial for subcutaneous injection. Each 0.5 mL of ACTIMMUNE contains: 100 mcg (2 million IU) of Interferon gamma-1b formulated in 20 mg mannitol, 0.36 mg sodium succinate, 0.05 mg polysorbate 20 and Sterile Water for Injection. Note that the above activity is expressed in International Units (1 million IU/50mcg). This is equivalent to what was previously expressed as units (1.5 million U/50mcg).