These include how severe the deficiency is, how well the patient responds, and their health conditions
Those on a vegan diet naturally eliminate protein sources such as chicken, eggs (the health benefits of eggs are endless and might warrant inclusion in your diet), and fish, which have high amounts of B12
The two used for injections, hydroxocobalamin and cyanocobalamin, have different storage rules, and getting them mixed up is the usual source of confusion
A natural, long-acting form of B12, hydroxycobalamin is popular in Europe and is often used to treat deficiencies and pernicious anaemia
Use your dominant hand to hold the syringe
The most common adverse events were mild-to-moderate headaches, similar in frequency to placebo groups