Do not inj SC/IV. Patients w/ weakened immune system due to corticosteroids, cytotoxic drugs, radiotherapy, or other treatments; HIV infection or any other immunocompromising diseases. Haemophilia or prone to bruising or bleeding. Fainting may occur. Not used against other viruses known to infect the liver (hepatitis B, C or E viruses). Liver disease. Pregnancy & lactation.