im injection sites for b12 vitamin Store Intramuscular vs Subcutaneous Injections vitamin B12 supplements .Vastus Lateralis Intramuscular Injection: Safe

It has also been suggested that B12 deficiency could be a cause of poor memory on a shorter-term basis, which may be helped by a B12 injection or supplement

When a compound has no completed human trial, there is by definition no safety data in any subgroup no pregnancy data, no hepatic-impairment data, no interaction data with common metabolic or endocrine medications

High-dose oral supplementation may be another treatment option, because consuming 1,000 g (1 mg) per day of vitamin B 12 orally should result in the absorption of about 10 g/day (1% of dose) by passive diffusion

Too little produces minimal effect

When your body has insufficient levels of vitamins in the body, your metabolism slows down and you will have a high tendency to gain weight