b12 injectable cyanocobalamin (B12) 1000mcg/mL Injection 30mL MDV It comes in a 100 mL vial and is prescription only Cyanocobalamin - Wikipedia

If you've had a deficiency for months, your body needs a little time to catch up

Because it is a single compound rather than a blend, there is no multi-component composition table to break down but the mechanism is worth mapping out, because it explains why the research doses are so small and why the effect is gradual rather than acute

Improves mental clarity : Regular injections can enhance focus, memory, and overall cognitive performance

It's been a tough time but I do feel so much better now, so hang in there and do not despair

Also, Vitamin B12 injection benefits for gastrointestinal or appetite issues

They rarely last more than a day