Chronic Stress : Long term physical or emotional stress increases oxidative stress, which can deplete the bodys natural antioxidant reserves
Active or history of certain cancers: Due to GHK-Cu's growth factor-like effects and angiogenesis promotion, it should be avoided by individuals with active cancer or a history of certain cancers
This can show up as symptoms such as delayed growth and development (failure to thrive), regression in neuromotor skills (such as losing the ability to roll over or grasp objects), failure to maintain eye contact (even in an infant who previous could do so), general muscle weakness, lethargy, excessive sleepiness, feeding difficulties, and even brain shrinkage
People often combine Carnosine with X39 for synergistic effects
Discovered in the early 1970s, GHK-Cu is a small, naturally occurring protein fragment that binds to copper ions