Contraindications/Precautions Who should not take this medication
If youre tired of dragging through your days, Vitamin B12 shots could be the small change that makes a big difference
The vitamin is more quickly absorbed when administered in injection format, but this is also what makes it so effective for weight loss
Vitamin B12 insufficiency that is not due to poor dietary intake is often treated with hydroxocobalamin injections once every 2-3 months for the rest of one's life
[3] Initial treatment of pernicious anemia typically consists of 1,000 mcg intramuscularly daily for one week, then weekly for four weeks, transitioning to 1,000 mcg monthly for life
Last reviewed: May 12, 2026 Last updated: May 12, 2026 Written by: Jay Hastings , CEO of PlexusDx Jay Hastings is the CEO of PlexusDx, a precision health company focused on genetic testing, blood biomarker insights, and personalized wellness recommendations