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Risks: Limited scientific evidence on efficacy
All dosing and administration must be prescribed and managed by a qualified physician
Calorie cycling, alternating between higher and lower calorie days, can disrupt this pattern
Watch for Signs of Copper Toxicity While GHK-Cu is generally well tolerated, overexposure to copper (especially in individuals with impaired detox pathways) can cause symptoms such as: Nausea or gastrointestinal upset Headaches Mood swings or irritability Metallic taste in the mouth If any of these symptoms occur, discontinue use and contact your healthcare provider
(2022) 6:e437
A study in the Journal of Clinical Endocrinology and Metabolism found that combined GH and testosterone administration in older men produced greater improvements in lean body mass and fat reduction than either hormone alone (Giannoulis et al., 2006)
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