vitamin b12 vitamin d3 injections side effect D₃ & B₁₂ deficiencies are becoming increasingly common — due to lifestyle, diet, and medical causes. Early testing and treatment can prevent serious complications. Don’t ignore the signs — Why Do I Feel Worse
Description
Vitamin B12 injections are typically used to treat a deficiency in people who are unable to absorb adequate amounts of B12

Post-treatment, patients may experience mild redness and swelling resembling a sunburn, with an average downtime of about 3 to 7 days as the skin heals
Route of administration: orally (in the form of pills/tablets), sublingually, or nasal sprays/injections (in severe cases of malabsorption) (Vitamin B12 Deficiency, 2025)

There is also the Cov-19 ZOE app, which can now track anyones adverse reaction as well, it was independent, but then received some Government funding, but apparently, so far, it is independent in its data

On my chest is a rash
Includes a complementary copy of The Ultimate Guide to Lasting Weight Loss authored by Dr Hilda Obi, DNP
