In general, yes, but not in this particular context: it is extremely common to have shortages of vitamin D, B12 and magnesium, and would take quite a bit of eff

In general, yes, but not in this particular context: it is extremely common to have shortages of vitamin D, B12 and magnesium, and would take quite a bit of effort to overdose on them. (I have already been taking all three as supplements for the last year due to other research suggesting that having a shortage of them worsens ADHD symptoms)