Hepatitis B vaccination is usually three injections, which are given in the 0th month, the first month and the sixth month, and newborns should be injected within 24 hours of birth. Hepatitis B vaccination, the earlier the injection, the better. After the first injection, the second injection will be given after a one-month interval, and then the third injection will be given at a six-month interval. Adverse reactions such as chills, headache and fever may occur after vaccination. If abnormalities such as high fever or convulsions occur after the first injection of this product, it is recommended that the second injection not be given. This drug is contraindicated in people who are allergic to this drug or the ingredients in the formulation. Hepatitis B vaccine, Hansenula polymorpha, CHO cell type, is contraindicated in pregnant women. It is recommended to stay for at least 15 minutes after vaccination. This vaccine is for prophylactic use and is not indicated for the treatment of hepatitis B. If you are a carrier of hepatitis B, there is no need to get hepatitis B vaccine.