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Because B12 shots are administered intramuscularly, they bypass the digestive system, allowing the body to absorb a much larger amount of B12 that would otherwise be lost during digestion

Educational reference only This page is a research-context summary, not personal medical advice

This mechanism naturally limits absorption when B12 is consumed in large quantities, with excess amounts typically eliminated through the kidneys without causing harm

Needle Subcutaneous (subQ) Short insulin needle, 1/2 inch Intramuscular (IM) Longer needle, deeper insertion Ease of self-injection Subcutaneous (subQ) Simple, pinch and inject Intramuscular (IM) Harder to place safely alone Soreness and bruising Subcutaneous (subQ) Usually minimal Intramuscular (IM) More common What PeRx ships for Subcutaneous (subQ) This is the intended route Intramuscular (IM) Not the prescribed route Unless your provider specifically instructs otherwise, inject BPC-157 subcutaneously with the insulin syringes included in your order