is ghk cu effective orally Can GHK-Cu Be Taken Orally? – Neurogan Health Sublingual GHK-Cu vs Injectable GHK-Cu:
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[DOI] [PubMed] [Google Scholar] 192.Al-Sadi R, Ye D, Said HM, Ma TY

For researchers designing mental health protocols, the gut-brain axis findings suggest that addressing gastrointestinal health is not peripheral to mood treatment

doi: 10.3390/molecules25204844

So, a 0.5mL, 31G, 5/16" syringe is a top-tier choice
