ghk-cu copper peptide hair growth scientific studies AHK-Cu Study (2007) — Plain-Language Summary ghk-cu peptide hair regrowth evidence
Description
Two levels can be unilateral (two different spinal levels on one side) or bilateral (the same level on both sides)

Inflammation likely plays a part in several of these effects, but the exact biology in humans is still not well understood
This high-purity dual peptide formulation combines BPC-157 (5mg) and TB-500 (5mg) , offering a stable and research-grade compound designed for laboratory studies only

May not be your issue but I thought mine was 100% speaker related

Mitsuharu M, Hiroaki Y, Hitomi O, Kazunobu A, Tadahiro N, Sayuri N, et al
