B12 injections can begin working within hours or a few days
That's one biological pathway, replenished, doing what it always did before it ran low
Follow sterile methods using syringes, alcohol swabs, and clean working conditions
Quality and purity of BPC-157 obtained from research chemical suppliers or compounding pharmacies may vary significantly in the absence of pharmaceutical manufacturing standards and regulatory oversight
You can either pinch an area of skin near the injury site and thrust the needle into that pinched area of skin, or if (as was the case of my elbow) it's too tough to simultaneously pinch your skin and inject yourself, you can recruit a helper or just angle the needle so it slips under unpinched skin
On the other hand, BPC-157 is a well-established peptide, especially in alternative medicine circles