b12 injection self administration uk Vitamin Self-Administration Treating Severe Vitamin B12 Deficiency

Pharmacokinetic characterization in porcine models demonstrated an intravenous half-life of approximately 3 minutes, with rapid degradation via sequential amino-terminal amino acid removal and confirmed oral bioavailability

Your starting levels and overall health play a big role

Typically a weekly intramuscular injection

That said, although side effects from vitamin B12 supplementation are very rare, it can possibly occur with B12 injections, but not with oral supplements

Sublingual delivery of vitamin B12 is an effective means of delivering the vitamin directly into the blood stream particularly for patients that have undergone a distal gastric bypass surgery