Fast-turnover tissues, like blood cells and gut lining, show deficiency symptoms earliest
The quickest way the body can absorb Vit B12 and adopt its own benefits is via Injection or Intravenous (IV) Administration
What to know about B12 shots
A 2025 meta-analysis of 16 studies involving 6,098 participants found no statistically significant difference between intramuscular, oral, and sublingual B12 supplementation routes
Possible side effects are pain, redness, or itching at the site of the injection, mild diarrhea, acne, muscle cramps and irregular heartbeat
But what makes this vitamin so indispensable