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People most at risk of deficiency include older adults, vegans, and those with specific medical conditions or taking certain medications
See the GHK-Cu stacking research guide for documented combination approaches
Improved vitality, high energy levels, and a drive to achieve peak performance are all commonly reported with this type of therapy
trial, subjects receiving weekly doses of 30 to 60 mcg/kg (roughly 2,000 to 4,000 mcg for an 80 kg adult) showed sustained IGF-1 elevation with no serious adverse events over the study period (Teichman et al., J Clin Endocrinol Metab 2006)
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