why is vitamin b12 injection painful do I feel worse after a injection? Does Vitamin B12 Injection Hurt?

Each vial is handled to meet laboratory-grade standards for purity and contamination control

Individual response may vary

That is the entire basis for the you can take it orally framing you will see repeated online

You understand and accept that there are inherent risks involved in shipping refrigerated products which may affect the efficacy of this product

These include: Vegans and Vegetarians: Since Vitamin B12 is primarily found in animal products, those on plant-based diets may be more susceptible to deficiency

It does not suddenly become poisonousjust less effective: Properly stored vitamins are likely safe past their expiration date for up to two years