Tier 1: best tolerated proteins on semaglutide These options work well even when nausea is present and appetite is minimal
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)
In 2026, 5-Amino-1MQ research continues to expand, particularly into its long-term effects on metabolic health, cellular aging, and potential applications in neurodegenerative studies
If symptoms are being driven by low testosterone or other hormone imbalances, hormone testing may reveal a larger underlying issue
If you are also experiencing lightheadedness on semaglutide , dehydration-driven orthostatic changes are likely at play
