can you overdose on vitamin b12 injections B12: and Side Effects Vitamin B12 Overdose: How Much

Hydroxocobalamin is widely recommended for the treatment of diagnosed B12 deficiency, pernicious anaemia, fatigue related to low B12, and certain neurological symptoms associated with deficiency

Intramuscular injections tend to produce a sharp Cmax and a lower trough, which means more fluctuation week to week

although this is uncommon, any history of hypersensitivity to niacinamide or NAD would be a contraindication

As part of a balanced diet

ASMBS B12 Recommendations for People after Bariatric Surgery The American Society for Metabolic and Bariatric Surgery has B12 recommendations for patients after bariatric surgery (Parrott, 2017): 350 to 500 g per day if taken orally