does bpc-157 increase testosterone and Testosterone: What the Research Says Peptide Therapy vs. Testosterone Therapy:

This is why we always ask for your complete medication list

These are not reasons to avoid beneficial therapies but rather context for understanding biological complexity

Aside from the tiny pinch you feel from the needle, its fairly normal to feel pain after an injection

Where To Buy Bacteriostatic Water Bacteriostatic water for peptide reconstitution is available through Umbrella Labs website (woocommerce-1375857-5076911.cloudwaysapps.com)

As Marre says if the fluid was cold then it would sting a lot as well - they tend to store ampoules in the fridge so they are way off body temperature unless they are warmed in the hands first