is ghk-cu safe to inject Dosage and Protocol: A Medical Provider's Guide the 30-Day Cycle Injectable GHK-Cu: Beginner's Guide to
Description
They can go really deep down into the lungs

Wang et al., 2021)

Elevated methylmalonic acid or homocysteine with normal-ish b12 suggests functional deficiency requiring supplementation

Molecules 25:2641

Similarly, Ahmad et al studied a mucoadhesive nanoemulsion to treat cerebral ischemia by adding chitosan into a continuous phase

doi: 10.1016/j.diabres.2014.04.006
