I am 24yrs female , i am pure vegetarian and been suffering from
b12 deficiency , dermatologist suggested me to take mm×b12 supplements for lifetime for 2months after every 2 months of gap , But i find mm×b12 very expensive , whereas another doctor suggested me to take neurobion forte for lifetime after evry 2months of gap, but i doubt whether taking neurobion for lifetime is safe ? Do it have any side effects or can be harmful in future ?