b12 injections not being absorbed Schedule busy and no time to sit through an IV? No worries, come get an injection instead! B12 Injection Dosage and Frequency: – B12 Injections for Energy: Benefits

This page covers both, with the oral route first

Maintenance, dietary cause: oral tablets or twice-yearly injections

Neurological changes A lack of vitamin B12 can cause neurological problems, which affect your nervous system, such as: vision problems memory loss pins and needles loss of physical co-ordination (ataxia), which can affect your whole body and cause difficulty speaking or walking damage to parts of the nervous system (peripheral neuropathy), particularly in the legs If neurological problems do develop, they can sometimes be irreversible

Guidelines and Protocols Advisory Committee: Cobalamin (vitamin B12) Deficiency - Investigation & Management [Internet]

Nervous System Support