GHK Cu Peptide: Hair Regrowth for Thinning & Alopecia Is it necessary to cycle on and off of every peptide? The answer may not be as simple as you think, and it depends on *why* the peptide is being used., The standard logic for cyclingusing something GHK Cu Copper Peptide: The Ultimate Peptide For Longevity GHK Cu Dosage and Protocol: A Medical Provider's Guide to the 30 Day Cycle Perfect B GHK Cu BPC 157 TB 500, 5 mg (1 complete cycle: 15 mg total) Beligas Pharmaceuticals GHK Cu Dosage and Protocol: A Medical Provider's Guide to the 30 Day Cycle Perfect B