its a series of 3 shots. like i said expensive 50.00 each here but once u have had them you are set for life and they will save your life, please dont let her doc say she doesnt need them , i have researched this on the web and risk factor is high so its worth the money that she spends now rather than the money she will spend for the rest of her life on medications for liver damage. p.s. where is she going?? . also arm will be sore for that day only and we have had side affects Joanne