side effects vitamin b12 deficiency injections Are Shots Right for You? Vitamin B12 Side Effects

It is rare in plant-based products, so people with a vegan diet can often suffer from vitamin B12 deficiency and related symptoms

Stomach acid changes, intestinal conditions, and autoimmune processes such as pernicious anemia can impair B12 uptake

Who Might Need a B12 Shot

According to the National Institutes of Health (NIH), no Tolerable Upper Intake Level (UL) has been established for B12, indicating that the risk of harm from high doses is low [*]

Going on 6 weeks Hi I got the first Pfizer shot in February a few days later my lymph node was swollen and painful, after a week the pain decreased but l still have some pain, a few days after that my arm muscle started twitching the next day toes and leg muscles twitching and cramping leaving my calf muscles in a lot of pain

Standard protocols often begin with loading doses followed by maintenance injections