HEPA B for Pediatric 0.5 mL is a vaccine specifically formulated to immunize children against hepatitis B, a viral infection that can lead to serious liver complications, including chronic hepatitis and liver cancer. This vaccine contains inactivated hepatitis B virus antigens, which stimulate the immune system to produce protective antibodies without causing the disease. Administered as an intramuscular injection, it is typically given in a series of three doses, starting at birth, to ensure effective long-term protection. The vaccine is safe and well-tolerated, with common side effects including mild soreness at the injection site, low-grade fever, or irritability. Vaccination is crucial for pediatric populations, especially those at higher risk of exposure to the virus.