We have declined hep b but have agreed to Vit K. The problem we were told with the oral dose is that there can be issues with getting it all swallowed, it needs to be given in multiple doses... and something else I can't remember.

Neither of us is a Hep B risk and the baby won't exactly be out getting tats and picking up strangers in bars for the first two months so it can wait. Also, there is a 20 odd year history of Vit K being given with little side effects so we decided to go ahead. I might change my mind once I have the baby in my arms though.