Octagam (Human Normal Immunoglobulin)

Octagam is an immunoglobulin therapy that acts on disorders of the immune system. It is indicated for:

• Primary immunodeficiency diseases: provides replacement IgG to reduce infection frequency.
• Chronic inflammatory demyelinating polyneuropathy (CIDP): helps improve muscle strength and functional ability.
• Multifocal motor neuropathy (MMN): reduces weakness and improves motor function.
• Immune thrombocytopenia (ITP) refractory to other treatments: raises platelet counts and decreases bleeding risk.

• Octagam supplies pooled human IgG antibodies that bind to a broad spectrum of antigens, neutralising pathogens and modulating immune cell activity. The infused immunoglobulin interacts with Fc receptors, complement proteins and cytokine networks, leading to reduced auto‑antibody production and enhanced opsonisation, thereby restoring immune balance.

Adverse reactions to Octagam may vary in frequency and severity.

Common Side Effects

• Headache: mild to moderate pain often occurring during or after infusion.
• Fever: transient rise in body temperature.
• Chills: shaking sensations during infusion.
• Nausea: mild stomach upset.
• Fatigue: feeling of tiredness post‑infusion.
• Injection site reactions: redness or swelling at the IV site.

Serious or Rare Side Effects

• Anaphylaxis: severe allergic reaction requiring immediate medical attention.
• Thromboembolic events: blood clots that may affect circulation.
• Acute renal failure: sudden loss of kidney function.
• Hemolytic anemia: destruction of red blood cells.
• Aseptic meningitis: inflammation of the meninges without infection.
• Severe hypotension: dangerous drop in blood pressure.

Before using Octagam, consider the following safety measures:

• Assess renal function: evaluate kidney health prior to initiation.
• Screen for thrombotic risk: identify patients with a history of clotting disorders.
• Monitor for IgA deficiency: patients lacking IgA may develop anti‑IgA antibodies.
• Observe during infusion: watch for signs of anaphylaxis or severe reactions.
• Adjust infusion rate: slower rates may reduce adverse events.
• Store at 2-8°C: keep refrigerated, protect from light, do not freeze or shake.

Octagam can interact with other medicines, affecting safety or efficacy.

Major Interactions (Avoid)

• Live vaccines: concurrent use may reduce vaccine effectiveness and increase infection risk.
• High‑dose aspirin or NSAIDs: may increase bleeding risk when combined with immunoglobulin therapy.

Moderate Interactions (Monitor Closely)

• Immunosuppressants (e.g., cyclophosphamide, azathioprine): may alter immune response and require dose adjustments.
• Anticoagulants (e.g., warfarin): monitor INR levels as immunoglobulin can affect coagulation.
• Diuretics: may influence fluid balance during infusion.
• Monoclonid­e‑