My doctor done some blood work on me last week and they called today and told me that i was to come in once a week for B12 shots for 60 days . Is that alot or normal ? The reason he took them cause my husband and i told the doctor how in the past my Vitamin D levels were low ( they were at 6 ) and i have been so tired here lately that it has become a problem thinking maybe it was my Vitamin D that was doing it . So he tested for both and both were low . So he has me doing 4000 unit of vitamin d3 a day for 60 days and once a week for the b12 shots . I just wanna make sure thats not over doing it with the shots ? Getting shots makes always makes me have Anxiety attacks