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NICE recommends lifestyle modifications and PDE5 inhibitors such as sildenafil, tadalafil, vardenafil, and avanafil as first-line pharmacological treatments
GHK-CU is the most studied and effective copper peptide, with over 40 years of research backing its benefits
In cognitive studies on elderly mice (28 months old), GHK-Cu administered at 10 mg/kg five times per week for three weeks produced significantly faster maze navigation, suggesting partial reversal of age-related cognitive decline
It targets mitochondrial metabolism, a pathway that no other peptide in this guide activates
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