Question 1

Why does GHK-Cu sting?

Accepted Answer

The stinging sensation is a natural reaction to the copper ions (Cu). Diluting the peptide with more bacteriostatic water or mixing it with BPC-157 can mitigate this in subjects.

Question 2

How do I fit 5ml of water in a standard vial?

Accepted Answer

Standard vials only hold ~3ml. For 50mg GHK-Cu, researchers often use empty 10ml sterile glass vials to properly hold the required volume of bacteriostatic water.