Vita B12 2500mcg Injection 1ml is administered via injection and must only be given by a healthcare professional (doctor, nurse, or trained caregiver)
Orders received after 1pm EST or on weekends are processed and shipped the next business day, so researchers can plan their experiments with predictable delivery schedules
However, vitamin B12 deficiency can cause damage to your nerves and affect brain function
rarediseases.info.nih.gov
It is supplied as a lyophilized powder for in vitro coordination-chemistry and biochemical assay work, including UV-Vis and circular dichroism metal-binding studies, potentiometric determination of stability constants, copper-dependent oxidoreductase assays, and use as a reference standard for reversed-phase HPLC, LC-MS, and ICP-MS copper determination
It was a single in-vitro screen at 10 M (a concentration that may sit well above what a 5 mg dose produces in your tissues), so it is not proof you are taking an MAOI