If you have Leber's hereditary optic neuropathy, you should avoid cyanocobalamin forms of B12
A vitamin B12 injection is a real medical procedure, and where you place it, how you rotate the sites and who gives it all matter more than the internet suggests
Isomaa B, Almgren P, Tuomi T, Forsn B, Lahti K, Nissn M, Taskinen MR, Groop L
This may include staying hydrated, maintaining a balanced diet, and monitoring for any unusual reactions
As we previously mentioned, it's estimated that your body can only absorb approximately 10mcg of B12 out of a 500mcg supplement, so it's always in your best interest to plan accordingly by choosing a vitamin B12 supplement that will contain much more than you what you theoretically need to meet your daily requirements