b12 injection dose for pernicious anemia Are Vitamin Shots Right You? Cost of Vitamin B12 Near

2022 Apr;26(7):2443-2459

Always good to have a reason I have also had this happen when my folate was low , it may be worth you getting it checked I had self inject my B12 every 4 weeks for the last 20+ (cannot really remember how long accurately), and 2 months ago got a similar 'electric shock tingling' all over my body - head, face, arms, hands, legs, feet etc within a couple of minutes of injecting, which lasted about 3 seconds or so

Potential side effects are typically mild but can include [generic side effects such as nausea, headache, etc.], depending on individual tolerance and dosage

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