bpc 157 with sermorelin vs BPC-157 Sermorelin vs BPC-157: Which Peptide

Vitamin B12 is crucial for processing nutrients in our cells, especially fats and certain amino acids

Using sterile water instead of bacteriostatic shortens usable lifespan to 72 hours and increases contamination risk in multi-dose vials

Most healthy adults only need a small amount of B12 -- 2.4 micrograms (mcg)

You can certainly combine the shots in the same syringe, but I do not recommend it (unless you are an expert), because if you get an air bubble in the syringe, as you extract the liquid from the vial, you will need to slowly return the liquid into the vial and re-extract it again till theres no bubbles