Hello, thank you for your enquiry.

For your information, the possible common side effects of Hep B booster vaccine are:

• Soreness, redness or swelling over the injection site
• Fever and chills
• Headache
• Lethargy
• Sore throat
• Abdominal discomfort
• Nausea or vomiting
• Diarrhoea or constipation

These side effects will usually subsided by itself without medication within days, up to 1 week.

If you ever experienced certain uncommon symptoms, allergic reaction such as hives, swelling of the face and throat, difficulty breathing, a fast heartbeat, dizziness, and weakness. Please do contact 999 immediately and visit the nearest hospital as soon as possible.

For more information you may refer to your doctor or contact us for an online consultation for assistance.

Thank you, we hope our answer has been helpful.

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