b12 injections called Sandoz Vitamin Injectable Solution - 1000 mcg/10 mL Vitamin B12 Injection – Manufacturer
Description
Wang, T

The frequency of injections depends on the severity of the deficiency and the underlying cause of the deficiency
StatPearls (US source) states, Patients generally receive lifelong intramuscular (IM) injections of vitamin B12 (typically 1000 g per month)

This leads to a lower red blood cell count and iron deficiency
Mood stabilization becomes more noticeable
