Interferon Alfa 2B Injection

  • Medicine name- Relifron
  • API- Interferon alfa-2b
  • Pack Size- 1 ml vial injection
  • Strength- 3 MIU & 5 MIU
  • Manufactured By: Reliance Life Sciences
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Interferon Alfa 2B injection specifically is an antiviral or antineoplastic medication used for the treatment of:

  • Chronic Hepatitis C / Chronic Hepatitis B
  • Hairy Cell Leukemia, Chronic Myelogenous Leukemia
  • Behçet’s Disease
  • Chronic Myelogenous Leukemia
  • Multiple Myeloma
  • Follicular Lymphoma
  • Carcinoid Tumor
  • Mastocytosis and Malignant Melanoma

Dosage and Side Effects

The recommended daily interferon alfa 2b dose should be administered by injection into a muscle, under the skin, as an infusion into a vein, or directly into a genital wart. Interferon alfa 2b should be used exactly as instructed by your healthcare professional.

Most common adverse reactions include fever, headache, chills, fatigue, and myalgia.

Warning and Precautions

  • The intalfa should not be in patients with hypersensitivity to it or any existing component of the product.
  • The interferon alfa therapy should be discontinued in patients with severe reduction in the neutrophil/platelet counts.
  • Interferon alfa 2b injection should be administeted extra cautiously in those patients who are with a history of cardiovascular disease.
  • Patients should be routinely monitored for the complete blood counts (CBC) during therapy.
  • The interferon alfa 2b must be used with additional caution in those patients who are with a history of the psychiatric disorders.
  • In patient occurring liver function abnormalities while on treatment with interferon alpha 2b should be monitored closely.
  • In women who are pregnant and in the male partners of women who are pregnant, interferon therapy should be avoided.


From which class of drug Interferon alfa-2b belongs? 

Interferon alfa-2b specifically belongs to the class of drugs named antineoplastic interferons. 

What are commonly reported side effects of Interferon? 

Fever, headache, chills, fatigue, and myalgia are the common interferon alfa 2b side effects

How should Interferon alfa-2b be administered? 

The recommended dose of alfa interferon should be injected either subcutaneously, intramuscularly, intravenous, or intralesionally.

How does Interferon alfa-2b work? 

Falls under antineoplastic, Interferon alfa-2b interacts with receptors on the cell surface. It fights against cancer; directly by interfering with the cancerous cells ability to divide, and indirectly in order to modify the body’s response to the cancerous cells. 

How much does interferon alfa 2b cost? 

The average wholesale intron A price in India is around 23,760 INR for a supply of 1 powder for the injection. If you purchase a generic brand of alfa 2b then it cost less as compared to innovator one.