This is the same receptor through which the natural hormone ghrelin-often referred to as the hunger hormone-exerts its effects
152 In one clinical trial including 80 men with varicocele, some of whom were treated surgically, those who received 1,500 mg Panax ginseng powder daily for 12 weeks had greater improvements in sperm concentration, motility, morphology, and viability compared with placebo, and the combination of ginseng plus surgery led to the best effects
Keck School of Medicine of USC
Therapeutic GHK-Cu simply restores levels that have declined with age bringing them closer to what you had at 20 rather than introducing something foreign
That dose, adjusted for human weight, would be roughly 1,600 mg for an average adult, far exceeding any practical use by orders of magnitude