My initial hair level of Lithium was <0.04. I have been supplementing with Lithium Orotate, 5mg twice a day for about a year. Latest Hair Test shows my Lithium is still <0.004. I am on the Yasko All-In-One Multi and just starting the PC/PS complex. No extra B12 or Folate Do some people need to take a LOT more Lithium than others?