dosage b12 injection Hydroxocobalamin (B12) 1000mcg/mL 30mL MDV Vitamin B12 Injections Dosage and
Description
Injections are usually best for people who cant absorb B12 properly from food or tablets or who have specific health issues

Thats the core reason the advantages of vitamin B12 injections over oral supplements matter so much for people with absorption difficulties or a more severe deficiency
Mental health conditions among patients seeking and undergoing bariatric surgery: A meta-analysis
So, try to stay consistent with your dosage

But while we know it is androgen-dependent, we also know that high androgen levels alone wont necessarily cause hair loss