do b12 injections work better than pills Vitamin vs. Supplements: Which is Right for You? B12 Pills vs B12 Shots

If blood tests show clearly low levels (thresholds vary by lab, but often below roughly 200 pg/mL) or there are signs of anemia, a provider may recommend weekly injections for the first several weeks as a correction or "rescue" phase

Vitamin B12 has a crucial role in red blood cell production, nerve function, and overall metabolism

(National Academy Press) Scalabrino G

You should also stay hydrated and eat normally unless your provider gives you different instructions

MIC b12, or Methylcobalamin B12, is a key vitamin in aiding your weight loss goals

Each method has its own rules, like the vitamin B12 IV infusion dose