how to inject b12 shot at home Give a Injection: Step-By-Step Instructions How to self-inject intramuscular vitamin

In the randomized placebo-controlled HOME trial of 390 adults with type 2 diabetes (de Jager and colleagues, Long term treatment with metformin in patients with type 2 diabetes and risk of vitamin B-12 deficiency, BMJ, 2010), metformin lowered serum B12 by a mean of 19 percent over 4.3 years

Common side effects include mild pain, redness, or swelling at the injection site

When starting B12 injections, regular medical and blood tests will help determine the appropriate future dosage and schedule

Rare hypersensitivity reactions to B12 preparations can occur, which might include systemic symptoms, though joint pain specifically is not typically reported