Make sure you're a candidate before you get the B12 shot. I 1st met with the nurse and nurse gave me a B12 shot then I went into see the doctor and they told me I'm not a candidate So I got stuck paying for the B12 shot. Maybe you should speak with the doctor first before the nurse and injects you and you get stuck with the bill. It was only $15 but it was part of the package deal I was not able to purchase. Idiots!!