how to give b12 injections video Let’s do my first injection together 💉 This is something I’ve been nervous about for a long time, but today I finally did it—and it honestly wasn’t bad at all. I used the Union Medico needle guide How to self-inject intramuscular vitamin

They are extremely effective at raising the levels of B12 in our blood quickly, which can help to reverse a deficiency, and then prevent further deficiency over time

Whilst the quantities are minuscule and generally harmless, individuals with impaired kidney function may theoretically have reduced capacity to eliminate this cyanide with very high doses over extended periods, though this remains largely theoretical at normal supplemental doses

It is possible that compensatory mechanisms could develop that reduce efficacy with prolonged use

Pregnant and breastfeeding women: The requirement increases to 2.6 mcg per day