Prohbig 100IU Injection is typically administered in conjunction with the hepatitis B vaccine It is derived from human blood plasma and is administered via injection into a large muscle such as the thigh or buttock Your doctor will administer the prescribed dosage after evaluating your condition It is important to administer the injection as soon as possible after identifying the risk of infection as delaying it may reduce its effectiveness It is important to note that this medicine is not a vaccine and does not provide longterm protection against hepatitis B There is a possibility of experiencing side effects from this medicine which may include flushing gastrointestinal disturbance stomach pain and upset nausea vomiting headache dizziness and some pain at the injection site If you experience any of these side effects or generally feel unwell it is important to inform your doctor There may be measures that can be taken to prevent or minimize these effects It is worth mentioning that serious reactions to the injection are rare Prior to using this medicine it is important to inform your doctor if you have kidney disease any issues with blood clotting or if you have recently received or are planning to receive a vaccination The safety of this medicine during pregnancy or breastfeeding is not wellestablished so it is advisable to seek advice from your doctor in such cases