neurogan health copper peptide ghk-cu , 120 mcg, 60 Tablets, 0.52 oz (15 g) Neurogan GHK-Cu Peptide Firming Body
Description
If you take these long term, it is worth checking your B12 status, and injections may be recommended if a deficiency is found

Kim H

up to 20-30% of older adults struggle with it due to lower stomach acid

2022 Mar 25;23(7):3607