Subcutaneous Injection Sites and Instructions for Safe Self Administration NL GHK Cu in lung diseases Synthagen PL Ghk Cu Intra Nasal Spray 50 mg 0.34 oz. Westend Medical Supply GHK Cu 2026 dosage: topical, microneedling, SC FP How To Inject Peptides SQ, IM, IV How, Where, What To Use Many people are being told to inject peptides like BPC 157, GHK Cu, or TB500 right over the area of pain, thinking it will deliver the peptide directly into the injured tissue. Thats simply not true.