Hepabsv 100IU Injection is commonly administered alongside the hepatitis B vaccine This injection is derived from human blood plasma and is administered through 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 this injection as soon as possible after identifying the risk of infection as delaying it may reduce its effectiveness It is crucial to note that this medicine is not a vaccine and does not offer longterm protection against hepatitis B In some cases this medicine may cause side effects such as flushing gastrointestinal disturbance stomach pain nausea vomiting headache dizziness and mild pain at the injection site If you experience any of these reactions or feel unwell it is important to inform your doctor They may be able to suggest methods to prevent or minimize these side effects Serious reactions to the injection are uncommon Prior to using this injection it is important to inform your doctor if you have kidney disease any blood clotting disorders or if you have recently received or plan to receive a vaccination The safety of this medicine during pregnancy or breastfeeding is uncertain so it is advisable to seek guidance from your doctor in such cases