Injectable GHK-Cu offers systemic and often faster-acting effects, delivering higher bioavailability to deeper tissues
This makes it foundational for skin regeneration, muscle recovery, and vascular health
Studies show GHK-Cu influences gene expression related to collagen synthesis and extracellular matrix remodelling
However, if left untreated, it can progress and cause: Chronic fatigue and overall weakness Dizziness Pale or yellowish skin tone Mental health problems such as depression, mood swings, irritability, and anxiety Loss of appetite, nausea, and diarrhea, leading to weigh loss Paresthesia: numbness, tingling or burning sensation in feet, legs, and hands Vision problems Vitamin B12 is an essential nutrient, meaning everyone should get it either from food or supplements