side effects of too much vitamin b12 injections Symptoms Overdose: Causes and When to Seek Help – Bolt Pharmacy B12 Shots — Why Are

London: Chapman and Hall/CRC (2015)

The needle should be inserted at a 90-degree angle for most patients, though very thin individuals may need to use a 45-degree angle or pinch the skin to ensure subcutaneous rather than intramuscular injection

This nutrient flexibility is what separates IV infusions from standalone B12 shots, giving providers the ability to tailor each session to individual health goals

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Some patients feel as though they want more frequent injections, and occasionally we test levels to see if they are receiving adequate replacement, but Im not sure how strong the evidence is to support this. GPs should consider periodic vitamin B12 testing of higher-risk patients who take metformin, even if they dont display symptoms of deficiency, the UK medicines regulator said earlier this year