Research literature describes benzyl alcohol as an effective preservative used in appropriately formulated multidose products (Johnson et al., 2017)
Published safety observations Published clinical studies involving topical GHK-Cu have generally reported favourable local tolerability
Menadione treatment depleted cellular GSH and reduced the GSH/glutathione disulfide ratio, but glutathione amino acid precursor supplementation effectively restored GSH levels and improved the redox balance
The demand has given rise to a burgeoning gray market, where wellness spas, multilevel marketers and telehealth websites ply the public with vials of research grade peptides labeled not for human use. More people want to use them, said Lauren Colenso-Semple, a muscle physiology researcher and science communication specialist who follows scientific studies of peptides as part of her work
Jaka Vukojevi, Borna Vrdoljak, Dominik Malekinui, Marko Siroglavi, Marija Milavi, Kolenc, D., Alenka Boban Blagai, Lovorka Batelja, Domagoj Drmi, Sven Seiverth, & Predrag Sikiri