I have researched and read alot on here about Vitamin B helping with fatigue. I have an appointment with my doctor on Friday and I want him to give me a prescription for the vitamin B I need to help with the fatigue. What I need to know is which vitamin B to get. I have been told vitamin B, vitamin B complex, concentrated vitamin B complex and vitamin B-12. Does anyone know which of these I need to ask for. I know there is a prescription strength and it has a generic which I get for free with my insurance. Any help would be greatly appreciated.

Thanks,
Billy