How much GHK-Cu should one inject for optimal effects, and what factors should be taken into account when determining the appropriate dosage? Given the myriad of individual physiological variations, including body weight, metabolic rate, and specific health conditions, should a standardized dosage recommendation even suffice? Furthermore, how does the method of administration influence the required amount? Is there a significant difference in efficacy between subcutaneous and intramuscular injections? Additionally, what are the implications of prolonged usage versus short-term treatment protocols? Are there any potential side effects that might arise from injecting too much, or conversely, too little? How can one ascertain whether their chosen regimen aligns with both their health objectives and physiological responses? As we delve deeper into the pharmacodynamics of GHK-Cu, what emerging research might inform us about tailored dosing for various therapeutic outcomes? Such complexities render the question not merely about quantity, but about individualized healthcare strategies.