Can power of attorney be taken away from a bipolar person?

A Power of Attorney can be revoked at any time for any reason. First you need to revoke it in writing with your name and address, your agents name and address, the date you gave the POA and have the revocation notarized. State that you are revoking the powers you gave to that person. You don't have to give a reason. Give a copy to the person you had appointed as your agent and ask her/him to return any copies of the POA. Then you need to show the revocation to any bank, doctor or hospital or any other business or institution where your agent may have used it or filed it. You will need to record a copy in the land records if it empowered your agent to act for you regarding your real estate. You can then appoint a new agent if you wish.