Because they serve different purposes, they can complement each other: Sermorelin supports hormone balance and recovery BPC-157 focuses on healing damaged tissues For example, someone whos training regularly but dealing with a lingering injury may benefit from both approaches, one supporting recovery overall, the other targeting the injury itself
Joshi N, Watanabe S, Verma R, Jablonski RP, Chen CI, Cheresh P, et al
The strongest peptide therapy reports involved shoulders, Achilles injuries, chronic overuse conditions, and post-surgical rehab
What is clearer is that stacking multiple strong actives at once increases the overall irritation burden on the skin barrier, which is a general skincare principle rather than a GHK-Cu-specific danger