Mast cells (MCs) are stimulated and degranulate, releasing histamine, IL-6, IL-8, prostaglandin D2 and tumor necrosis factor-alpha (TNF)- together with IL-23 and IL-31 and other cytokines (48, 49)
MECHANISM CATEGORIES RESEARCH CONDITIONS SAFETY Side effects Localized erythema (injection site) Transient hyperpigmentation (topical, in some users) Rare contact dermatitis Known interactions Vitamin C (theoretical copper-ascorbate redox cycling) Retinoids (may potentiate irritation when stacked topically) Contraindications Wilson's disease (copper-accumulation disorder) Active malignancy at the local site (theoretical, due to angiogenic activity) REGULATORY STATUS FDA Topical GHK-Cu formulations are marketed as cosmetic ingredients under FDA cosmetic regulation (cosmetics generally do not require FDA premarket approval)
Vitamins B, D, and folic acid Hyperhomocysteinemia is characterized by enhanced levels of non-proteinogenic -amino acid homocysteine, an intermediate in methionine metabolism
This is important because higher doses of vitamin B12 arent generally a problem
12 Knight notes that her patients often report firmer skin and better elasticity, which she says aligns with the role of growth hormone and IGF-1 in supporting collagen synthesis, protein turnover, and cellular repair. Other Possible Benefits Some studies have suggested that semorelin helps with fatty liver disease, though findings remain inconsistent and are often based on small or HIV-specific populations
Medical professionals also recommend that men take folic acid when trying to conceive, as it can improve the quality of their sperm
