b12 injections pain in arm How to Give a Injection: Step-By-Step Instructions Semaglutide with B12 for Weight
Description
If there are visible symptoms eg red, inflamed, swollen etc might be worth taking a photo which you could send to GP if needed

Link 2

Because B12 is naturally present only in meat and other animal products, vegans and vegetarians may not get enough B12 from their diet

What were the most common side effects of AOD-9604 in clinical trials

These figures are based on preventing B12 deficiency and therefore may not represent the optimum intake
