what size syringe to use for b12 injections Is It Okay To Use
Description
Table 3: Cohort 2 (n = 38,097) Costs of Oral Supplements and Intramuscular Injections

You may be at risk of having vitamin B deficiencies if you have Crohn's disease, autoimmune diseases, HIV, are elderly, or have a family history of the disease
Oral Supplements: Convenient but Slower Absorption Oral Vitamin B12 supplements are available in tablet, capsule, or liquid form and easily integrate into your daily routine

Clinical Applications and Limitations Tiaminal B12 injections are used for treating vitamin B12 deficiency

Serum homocysteine and dementia: meta-analysis of eight cohort studies including 8669 participants

That is intentional: the two vial sizes reflect two different documented protocols and two different concentration setups, and it is a reminder never to eyeball a dose across vial sizes