Numerous controlled experiments have investigated topical formulations of GHK-Cu and reported positive effects
My skin gets fussy with most things so I didn't expect much
Drug Categories Amino Acids, Peptides, and Proteins Additional Notes Chemically stable in gastric juice (?24 hours) Water-soluble at neutral pH Not approved for human or veterinary use Summary Table Disclaimer For Research Use Only
But once you escalate to 5 mg and beyond, the 30 mg vial becomes the clear winner in terms of value and convenience
Read review Dihexa for Endometriosis Brain Fog The November 2025 Lancet O&G/WH 'overlooked symptom' commentary from Edinburgh EXPPECT, the April 2025 Horn FACT-Cog 1,239-patient survey (~80% perceived cognitive impairment), the March 2025 NICE TA1057 Ryeqo approval (first daily pill on NHS), the April 2024 NICE NG73 update, the April 2026 renewed Womens Health Strategy with 117 action points, the 2023 Greaves CNS-wide glial activation mouse model, the BDNF/TrkB central-sensitisation directionality paradox, and the ~1.5 million UK women affected
Human Sleep Experiments Small intravenous studies were undertaken in healthy volunteers and people described as having chronic insomnia or narcolepsy
