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RX BIN: 015558RX PCN: HTGroup ID: DDN6600Card Holder ID: DDN6600
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2019 Price of Pegasys

$1,019.681 vial (1ml) 180mcg
price without discount in nearest pharmacy. Price may vary.

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Peginterferon alfa-2a volume of distribution

Peginterferon alfa-2b has a relatively rapid absorption with a half-life of 4.6 hours and a volume of distribution of 0.99L/Kg, which are not significantly different from that of standard interferon alfa-2b, 2.3 hours and ~1.4L/Kg respectively.

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What is Peginterferon alfa-2a

Human interferon 2a, is a covalent conjugate of recombinant alfa-2a interferon with a single branched bis-monomethoxy polyethylene glycol (PEG) chain. The PEG moiety is linked at a single site to the interferon alfa moiety via a stable amide bond to lysine. Peginterferon alfa-2a has an approximate molecular weight of 60,000 daltons. Interferon alfa-2a is produced using recombinant DNA technology in which a cloned human leukocyte interferon gene is inserted into and expressed in Escherichia coli. The resultant protein is 165 amino acids. The PEG strand protects the molecule in vivo from proteolytic breakdown, substantially increases its in vivo half-life, and reduces immunogenicity by wrapping around and physically hindering access to the protein portion of the molecule.

Peginterferon alfa-2a mechanism of action

Interferon alpha binds to type I interferon receptors (IFNAR1 and IFNAR2c) which, upon dimerization, activate two Jak (Janus kinase) tyrosine kinases (Jak1 and Tyk2). These transphosphorylate themselves and phosphorylate the receptors. The phosphorylated INFAR receptors then bind to Stat1 and Stat2 (signal transducers and activators of transcription) which dimerize and activate multiple (~100) immunomodulatory and antiviral proteins. Interferon alpha binds less stably to type I interferon receptors than interferon beta.

Dosage forms of Peginterferon alfa-2a

FormRouteStrength
Injection, solutionsubcutaneous135 ug/.5mL
Injection, solutionsubcutaneous180 ug/mL
Injection, solutionsubcutaneous180 ug/.5mL

Prescription Generics

false

International Brands

Pegasys

Synonyms

Manufacturers

Hoffmann La Roche Limited

CAS number

198153-51-4

UNII

Q46947FE7K

State

liquid

Affected organisms

Humans and other mammals

Indication of Peginterferon alfa-2a

For treatment of hairy cell leukemia, malignant melanoma, and AIDS-related Kaposi’s sarcoma.

Toxicity of Peginterferon alfa-2a

Pegasys suppresses bone marrow function and may result in severe cytopenias. Very rarely alpha interferons may be associated with aplastic anemia. It is advised that complete blood counts (CBC) be obtained pre-treatment and monitored routinely during therapy.

RX24 Drugs Disclaimer: consult your healthcare provider before buying a Peginterferon alfa-2a on prescription or using an RX manufacturer savings coupon. Content on this page is provided for informational purposes only. Any use of this information is at your own risk.

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