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Hepatitis b immune globulin: Brands, Price & Uses in Bangladesh
Hepatitis b immune globulin is a passive immunizing agent used for post-exposure prophylaxis against hepatitis B virus (HBV) infection.
About Hepatitis b immune globulin
Indications of Hepatitis b immune globulin
Hepatitis b immune globulin is a passive immunizing agent used for post-exposure prophylaxis against hepatitis B virus (HBV) infection. Its established and guideline-supported uses include:
- Perinatal exposure: Infants born to hepatitis B surface antigen (HBsAg)-positive mothers, given together with hepatitis B vaccine to prevent mother-to-child transmission (established/guideline-recommended).
- Acute percutaneous or mucosal exposure: Needlestick injuries, other percutaneous exposure, or mucosal (eye, mouth) exposure to HBsAg-positive blood or body fluids in unvaccinated or inadequately vaccinated individuals (established, given with hepatitis B vaccine series).
- Sexual exposure: Sexual contact with a person known to have acute or chronic hepatitis B infection, in individuals who are unvaccinated (established/guideline-supported).
- Prevention of HBV recurrence after liver transplantation: Used (often long-term, in combination with antiviral therapy) in patients undergoing liver transplantation for HBV-related liver disease, to prevent graft reinfection (established for this specific indication with certain formulations).
Hepatitis b immune globulin provides passive, immediate but temporary protection; it does not treat an already-established hepatitis B infection and is not a substitute for hepatitis B vaccination, which should be given concurrently (at a separate site) whenever indicated for long-term active immunity.
Dosage & Administration of Hepatitis b immune globulin
General principles
Hepatitis b immune globulin must be administered by, or under the direct supervision of, a qualified healthcare professional in a clinical setting, by intramuscular or intravenous injection depending on the specific product and indication. It should be given as soon as possible after exposure, since efficacy declines with delay.
| Indication | Typical Dosing | Timing |
|---|---|---|
| Perinatal exposure (infant of HBsAg-positive mother) | Approximately 0.5 mL (per product labeling) intramuscularly, together with the first dose of hepatitis B vaccine at a separate injection site | Within 12 hours of birth |
| Percutaneous/mucosal exposure (e.g. needlestick) | Approximately 0.06 mL/kg body weight intramuscularly (per product labeling), with hepatitis B vaccine series if not previously vaccinated | As soon as possible, preferably within 24 hours and generally not later than 7 days after exposure |
| Sexual exposure to an infected partner | Approximately 0.06 mL/kg body weight intramuscularly (per product labeling) | Within 14 days of the most recent sexual contact |
| Prevention of HBV recurrence after liver transplantation | Product-specific intravenous dosing (often weight- or titer-based), used as part of a defined perioperative and long-term regimen with antiviral therapy | Perioperatively, then at intervals per transplant protocol |
Exact volume/dose depends on the specific licensed product; the prescribing healthcare professional determines the precise dose and schedule.
Side Effects of Hepatitis b immune globulin
Most reactions to Hepatitis b immune globulin are mild and local. Reported side effects include:
- Injection-site pain, tenderness, redness, or swelling
- Low-grade fever, chills
- Headache, malaise, myalgia (muscle aches)
- Nausea
- Rarely, hypersensitivity reactions ranging from mild urticaria to (very rarely) anaphylaxis
As with all plasma-derived products, there is a theoretical risk of transmission of infectious agents, although this risk is minimized by donor screening and viral-inactivation steps used during manufacture. Any signs of a severe allergic reaction require immediate medical attention.
Contraindications of Hepatitis b immune globulin
Hepatitis b immune globulin is contraindicated in patients with:
- A history of anaphylactic or severe systemic (hypersensitivity) reaction to human immunoglobulin preparations or any component of the specific product.
- Known selective IgA deficiency with documented antibodies against IgA, due to the risk of severe hypersensitivity or anaphylactic reactions.
Frequently Asked Questions about Hepatitis b immune globulin
What is Hepatitis b immune globulin used for?
Hepatitis b immune globulin is used to provide immediate, temporary protection against hepatitis B virus infection after a known or suspected exposure, such as a needlestick injury, sexual contact with an infected person, or birth to a mother who is hepatitis B surface antigen positive. It is also used to help prevent hepatitis B recurrence after liver transplantation in appropriate patients.
How soon after exposure should Hepatitis b immune globulin be given?
Hepatitis b immune globulin should be given as soon as possible after exposure, ideally within 24 hours and generally no later than 7 days for most percutaneous/mucosal exposures, within 12 hours of birth for newborns of HBsAg-positive mothers, and within 14 days for sexual exposure. Effectiveness decreases the longer treatment is delayed.
Does Hepatitis b immune globulin treat hepatitis B infection?
No. Hepatitis b immune globulin does not treat an already-established hepatitis B infection. It only helps prevent infection from developing after a recent exposure, by supplying ready-made antibodies. Established infection requires different, specific management under a physician's care.
Who should not receive Hepatitis b immune globulin?
Hepatitis b immune globulin should not be given to anyone with a history of anaphylactic or severe systemic reaction to human immunoglobulin products, or to people with selective IgA deficiency who have developed antibodies against IgA, because of the risk of severe allergic reactions. Always inform your doctor of any prior reactions to immunoglobulin injections.
Is Hepatitis b immune globulin safe during pregnancy?
Hepatitis b immune globulin is generally considered acceptable for use during pregnancy when clearly indicated for post-exposure prophylaxis, since the benefit of preventing hepatitis B infection typically outweighs potential risk. It should still be used only if clearly needed and under a physician's guidance.
What are the common side effects of Hepatitis b immune globulin?
Common side effects of Hepatitis b immune globulin include pain, redness, or swelling at the injection site, mild fever, headache, and muscle aches. Serious allergic reactions are rare but require immediate medical attention if they occur.
Disclaimer
The information provided is accurate to the best of our knowledge, but it does not replace professional medical advice. We cannot guarantee its completeness or accuracy, and the absence of specific information about a drug should not be taken as an endorsement. We are not responsible for any consequences arising from this information, so please consult a healthcare professional for any concerns or questions.