when does a b12 injection start working How Long Shot Last Are Vitamin B12 Shots Right

Journal of Physiology-Paris , 93 (6), 479485

How Vitamin B12 Affects Brain Chemistry and Stress Systems Neurotransmitter production B12, together with folate and B6, is essential for the methylation reactions that produce serotonin, dopamine, norepinephrine, and GABA the neurotransmitters most directly involved in regulating mood, motivation, calm, and emotional stability

I take one medication (Eplerenone) which is supposed to maintain potassium levels (I've also just found out that it affects B12 absorption), but even with that my potassium level had dropped in 3 weeks (4.9 to 3.9)

A suggested dosage is 300 mcg/day

The 1 mg vial is more practical for full cycles

What is the safest BPC-157 dosage