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30 days (reconstituted) Mechanism Classification Primary Mechanism: NNMT (Nicotinamide N-methyltransferase) Inhibitor Target Enzyme: Nicotinamide N-methyltransferase Cellular Effect: Increases intracellular NAD+ and SAM levels Metabolic Pathway: NAD+ salvage pathway modulation Selectivity: Highly selective for NNMT (no cross-reactivity with related enzymes) Pharmacological Properties Route of Administration: Subcutaneous injection Bioavailability: High (subcutaneous)

The range of drug concentrations that produces the desired effect without causing toxicity

When you use GHK-Cu, you are supplementing something your body already recognizes and processes through established pathways

After 5 sessions: 26.5% median hair regrowth, 93% shedding reduction, zero adverse events (Kuceki et al., 2025)

The peptides development was ultimately discontinued in 2007 after a 24-week Phase III trial failed to demonstrate statistically significant weight loss compared to placebo, though research into its regenerative properties has continued