ghk cu peptide pill Neurogan Health Copper GHK-CU , 120 mcg, 60 Tablets, 0.52 oz (15 g) GHK-Cu Copper Tripeptide-1 Peptide –
Description
Intervertebral disc L7/S1 was used in the sham group, while L4/5, L5/6 and L6/7 were used in the experimental groups

Neuron 113:4970

The substitution wouldn't address the same research question

For inflammatory bowel disease research, both peptides show promise with complementary mechanisms