Most users notice initial improvements in skin hydration and texture within 2 to 4 weeks
Photos at consistent intervals, perhaps monthly or quarterly, document long-term outcomes
The natural GHRH molecule has 44 amino acids in total, but the biological activity sits in the first 29
Pediatr Nephrol 6:483489 Lanning NJ, Carter-Su C (2006) Recent advances in growth hormone signaling
That said, dosages up to 1,200 mg/day have been studied with no serious adverse effects reported. After taking two capsules, he reported no noticeable side effects and gave the supplement another 5 for this
Cell viability for GHK-Cu was previously investigated by Hairui et al, showing no significance difference between the control and the GHK-Cu treated group at the same concentrations and time points, implying the non-cytotoxic nature of GHK-Cu towards HaCaT 11