adverse reaction to vitamin b12 injection Side Effects Are B12 Shots Safe? Royal

NHS B12 injections are prescribed for documented deficiency or malabsorption conditions including pernicious anaemia, gastrointestinal disorders affecting absorption, previous gastric surgery, and when neurological symptoms are present

Specifically, the muscle injected is known as the vastus lateralis

Several factors can lead to elevated B12 levels, including: Over-supplementation: The excessive intake of vitamin B12 through high-dose oral supplements or repeated intramuscular injections can raise blood levels of B12 temporarily 6

Breastfeeding mothers require increased amounts of B vitamins because they are essential for infant development and are passed through breast milk