Symptoms of vitamin B-12 deficiency include: Fatigue Difficulty concentrating Decreased mood Loss of appetite Poor memory Constipation Higher-risk groups for vitamin B-12 deficiency include people with intestinal disorders such as Crohns or Celiac disease, as well as those who suffer from muscular degeneration, Lou Gehrigs disease or diabetes
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Common Side Effects Following B12 Injections B12 injections, whilst generally well-tolerated, can produce side effects that vary between individuals
Injection-site reactions are among the most commonly reported side effects: patients may experience pain, stinging, or mild burning at the IM injection site
Our guide shares important info on vitamin B12 injection dosage for adults
I've been using this now for over a year and notice a real difference in my energy and my B12 levels are up in my tests