H Bigg 100IU Injection is typically administered alongside the hepatitis B vaccine This injection is derived from human blood plasma and is given via an injection into a large muscle such as the thigh or buttock Your doctor will determine the appropriate dosage based on your condition and administer it accordingly It is important to receive the injection as soon as possible after the risk of infection is identified to ensure its effectiveness Delaying the administration of the injection may reduce its efficacy However its worth noting that this medicine is not a vaccine and does not provide longterm protection against hepatitis B There are some potential side effects associated with this medicine including flushing gastrointestinal disturbances stomach pain upset stomach nausea vomiting headache dizziness and localized pain at the injection site If you experience any of these reactions or simply feel unwell it is important to inform your doctor They may be able to suggest ways to prevent or minimize these effects Serious reactions to the injection are rare Before using this medicine it is crucial to inform your doctor if you have kidney disease any blood clotting issues or if you have recently received or plan to receive a vaccination The safety of this medicine during pregnancy or breastfeeding is unknown so it is advisable to seek advice from your doctor in these situations