18 The most bioavailable forms of B12 are methylcobalamin, hydroxocobalamin, and adenosylcobalamin
Springer, Cham, pp 2948 Liu T-Y, Hussein WM, Giddam AK, Jia Z, Reiman JM, Zaman M, McMillan NA, Good MF, Monteiro MJ et al (2015) Polyacrylate-based delivery system for self-adjuvanting anticancer peptide vaccine
Do not use GHK-Cu Cream if you are allergic to copper peptides or any peptide components, or if you have an active skin infection, active inflammatory dermatologic condition, or open wounds
They might be having a severe allergic reaction
Comparing Oral vs
The core formula is: Concentration (mg/mL) = Peptide Mass (mg) / Solvent Volume (mL) For example, reconstituting a 5 mg vial with 2.5 mL of bacteriostatic water produces a 2.0 mg/mL solution