This medication must be administered by a health professional. Because complete vaccination requires several doses of this product to be given at specific times, it is important to keep your scheduled appointments.

In addition to its desired action, this medication may cause some side effects, notably:

• it may cause headaches;
• it may cause a fever;
• it may cause nausea or, rarely, vomiting;

• it may cause unusual tiredness;
• it may cause a feeling of discomfort;
• it may cause redness and swelling at the injection site.

Each person may react differently to a treatment. If you think this medication may be causing side effects (including those described here, or others), talk to your health care professional. He or she can help you to determine whether or not the medication is the source of the problem.

Keep this product in the refrigerator and do not allow it to freeze. Make sure that any leftover portion is disposed of safely.