I am facing darkness in my skin from last 2-3 yrs. My face(forehead and around mouth area) and neck got pigmented. Recently I have checked with one of the dermatologists and she prescribed me to go for
vitamin test in which I found that I am vitamin deficient.She prescribed me
vitamin b12 for a month and
vitamin d tablets for two months,once a week.
I just want to check for how long shall I continue taking these supplemen gvts?