vitamin b12 injections to gain weight Injection at a Licensed Pharmacy Vitamin B12 Injections - Medical
Description
10002000 g daily) can correct deficiency in some cases (even without intrinsic factor, because a small fraction can be absorbed passively)

But the best schedule depends on many things, like lifestyle, diet, and health

Aug 2018;91(4):336-338

& Oka, Y

Much of this effect comes from the impact B12 has on the bodys serotonin creation, a key internal resource for moods

Pregnancy and Infertility: Pregnant women require higher levels of B12 for fetal development