Yoshida M, Kikukawa M, Hisa H, Satoh S
GHK-Cu works on the follicle itself: it enlarges hair follicle size, strengthens follicles at the structural level (reducing the miniaturization that drives androgenetic alopecia), and stimulates angiogenesis to improve blood supply to the scalp
J.Jr.TallaridaR
If you experience any severe side effects, such as severe stomach pain, persistent nausea, or changes in your thyroid, you should contact your healthcare provider immediately

Gastrointestinal disturbances are the most frequently reported side effects and can substantially impact energy levels: Nausea and vomiting Very common side effects (may affect more than 1 in 10 people), particularly during dose escalation, these symptoms can reduce nutritional intake and lead to dehydration, both contributing to fatigue [1] [2] Diarrhoea A common side effect that can cause fluid and electrolyte losses, resulting in weakness and tiredness [1] Reduced appetite Whilst therapeutically beneficial for weight management, significantly decreased food intake may result in insufficient caloric energy Abdominal discomfort and constipation Persistent digestive upset can disrupt sleep quality and daily functioning Hypoglycaemia (low blood sugar) represents another important consideration, especially when Ozempic is used alongside other glucose-lowering medications such as sulphonylureas or insulin