Plasmahep 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 determine the appropriate dosage based on your condition and administer it accordingly It is important to administer the injection as soon as possible after identifying the risk of infection as delaying it may reduce its effectiveness However it is important to note that this medication is not a vaccine and does not provide longterm protection against hepatitis B Occasionally this medication may cause side effects such as flushing gastrointestinal disturbances stomach pain upset stomach nausea vomiting headache dizziness and injection site pain If you experience any of these reactions or feel unwell it is important to inform your doctor There may be ways to prevent or minimize these effects Serious reactions to the injection are rare Before using this medication inform your doctor if you have kidney disease blood clotting issues or if you have recently had or plan to have a vaccination The safety of this medication during pregnancy or breastfeeding is not well known so it is advisable to consult with your doctor for guidance