See our head-to-head comparison of GHK-Cu vs NAD+ for patients deciding between these two protocols for a full breakdown of where each one fits in a comprehensive longevity protocol
Hormonal changes, including shifts in cortisol (a stress-related hormone), can also play a role in this temporary fatigue as your body adapts
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The timeline depends on the condition being addressed, the administration route, dosing consistency, and individual response factors
Rebouche C: Carnitine: Modern Nutrition in Health and Disease
Individual responses vary considerably, with more pronounced effects observed in patients with obesity and baseline hypertension