b12 injection vs sublingual Organic Vitamin 1000 mcg Liquid Drops, Unflavored, 2 oz B12 Injections or Oral B12:

Refer to Table 6: Treatment of folate deficiency for supplementation routes, dosage and duration

A high dose ensures the body gets what it needs, even in severe cases

The right choice depends on deficiency cause, route preference, tolerability, availability, and monitoring needs

Treating true deficiency can improve deficiency-related symptoms (including anemia-related fatigue and neurologic issues) (see the NIH ODS Vitamin B12 fact sheet )

Lebers Disease: People with Lebers disease, a rare inherited eye condition, should avoid vitamin B12 injections

Vitamin B12 IV Infusion Dose Guidelines Following guidelines is key when giving B12 IV