Injection-site soreness lasting 24-36 hours (41% of reviews) Described as "mild to moderate" muscle ache at the injection site, comparable to post-vaccine soreness
Moore E, Mander A, Ames D, Carne R, Sanders K, Watters D (2012) Cognitive impairment and vitamin B12: a review
Understanding vitamin B12 therapy well helps us make patients lives better
We advise that you read as much medical research as possible about B-Vitamin injections, uses, and dosages pertaining to your individual use, such as weight-loss, extra energy, bolstering your immune system, stress, nerve repair, neurological improvement for cognitive abilities or diseases that require injecting vitamin B-Complex
A lack of this important nutrient can cause tiredness, brain changes, and big red blood cells
Some people absorb and store vitamins more efficiently than others, which means they might need injections less frequently