What is the proper thing to take when a person has hepa-B virus in their system? It said to be that it is irreversible... What will a person do to eliminate the said virus in his/her system?

People with hep B are called carriers and there is not much that can be don't once hep B is contacted.

Hepatitis B is a serious disease caused by a virus that attacks the liver. The virus, which is called hepatitis B virus (HBV), can cause lifelong infection, cirrhosis (scarring) of the liver, liver cancer, liver failure, and death.