lump under skin after b12 injection What causes a raised bump insulin injection? Why do I get painful

Without any barriers or extra steps to deter it, your body is able to absorb between 15-97% of the B12 vitamins from the injection

Are B12 Injections Better Than Supplements

this is the most common cause of vitamin B12 deficiency in the UK a lack of these vitamins in your diet this is uncommon but can happen if you have a vegan diet and do not take vitamin B12 supplements or eat foods fortified with vitamin B12, follow a fad diet or have a generally poor diet for a long time medicine certain medicines, including anticonvulsants and proton pump inhibitors (PPIs), can affect how much of these vitamins your body absorbs Vitamin B12 and folate deficiency are more common in older people, affecting around 1 in 10 people aged 75 or over and 1 in 20 people aged 65 to 74

In these cases, oral supplements are often ineffective, and injections are required to bypass the digestive system