FOR INTRAMUSCULAR USE ONLY. IN ADULTS THE INJECTION SHOULD BE GIVEN IN THE DELTOID REGION, IN NEONATES AND IN INFANTS ENGERIX-B SHOULD BE ADMINISTERED IN THE ANTEROLATERAL THIGH. TO BE SHAKEN WELL BEFORE USE. A DOSE OF 20 MCG OF ANTIGEN PROTEIN IS RECOMMENDED FOR ADULTS. A DOSE OF 10 MCG OF ANTIGEN PROTEIN IN 0.4 ML SUSPENSION IS RECOMMENDED FOR NEONATES, INFANTS AND CHILDREN BELOW 18 YEARS OF AGE ALTHOUGH A DOSE OF 20 MCG MAY ALSO BE USED WHEN A PAEDIATRIC DOSE IS NOT AVAILABLE. THREE DOSES SHOULD BE GIVEN, 1ST DOSE AT ELECTED DATE, 2ND DOSE 1 MONTH LATER AND 3RD DOSE 1-6 MONTHS FROM THE DATE OF THE FIRST DOSE. FOR MORE RAPID IMMUNIZATION THE 3RD DOSE CAN BE GIVEN TWO MONTHS AFTER THE INITIAL DOSE WITH A BOOSTER AT 12 MONTHS. IT MUST NOT BE GIVEN INTRAVENOUSLY.